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Department Internal Medicine and Geriatrics
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages English
Surgeon No
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus

Specialties & Treatments

Treatment & Services

  • Acute Care Medicine
  • Adult Medicine
  • Avoiding Dehydration, Proper Hydration
  • Blood Glucose Test
  • Blood Tests
  • Cardiovascular Health
  • Challenges and Choices of Aging
  • Comprehensive Care of the Adult Patient
  • Contraception
  • Diagnosing Asthma
  • Estrogen Replacement Therapy
  • General Internal Medicine
  • Genitourinary Exams
  • Health Screening and Testing
  • HIV Testing
  • Immunization
  • Internal Medicine
  • Mammogram
  • Medication Interactions Quiz
  • Medication Management
  • Men's Health
  • Nutrition Sciences
  • Outpatient Care
  • Pap Test
  • Peak Flow Meter
  • Physical Examinations
  • Prevention and Wellness
  • Preventive Medicine
  • Primary Care
  • Skin Tag Removal
  • Smoking Cessation
  • Treating Asthma with Bronchodilators
  • Urine Protein Test
  • Women's Health
View all 34 Treatment & Services +

Specialty in Diseases & Conditions

  • Abdominal Pain
  • Allergies
  • Alzheimer's
  • Anemia
  • Anxiety Disorder
  • Arthritis
  • Asthma
  • Atherosclerosis
  • Back Pain in Athletes
  • Bacterial Vaginosis
  • Bronchitis
  • Cellulitis
  • Chickenpox
  • Chlamydia Trachomatis
  • Chronic Illness
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Common Cold
  • Constipation
  • Coronary Artery Disease
  • Cough
  • Dementia
  • Depression
  • Dermatitis
  • Dermatitis - Contact
  • Diabetes
  • Diarrhea
  • Disease Prevention
  • Diverticulosis
  • Dyspnea
  • Ear Infections (Otitis Media)
  • Eczema
  • Edema
  • Falls
  • Female Incontinence
  • Fever
  • Gas (Digestive)
  • Gastritis
  • Gastroenteritis
  • Gastroesophageal Reflux (GERD)
  • General Infectious Diseases
  • Growth Failure in Children with Kidney Disease
  • Hay Fever
  • Headaches
  • Heart Disease
  • Heart Palpitations
  • Heartburn
  • High Blood Pressure (Hypertension)
  • High Cholesterol
  • Hyperkalemia
  • Hypothyroidism
  • Influenza (Flu)
  • Insomnia
  • Irritable Bowel Syndrome (IBS)
  • Kidney Infections
  • Menopause
  • Metabolic Syndrome
  • Middle Ear Infection
  • Migraine Headaches
  • Musculoskeletal Pain
  • Nausea
  • Obesity
  • Osteoporosis
  • Peripheral Artery Disease
  • Pharyngitis
  • Pneumonia
  • Poison Ivy
  • Poison Oak
  • Poison Sumac
  • Premenstrual Dysphoric Disorder (PMDD)
  • Premenstrual Syndrome (PMS)
  • Pulmonary Disease
  • Restless Leg Syndrome
  • Ringworm
  • Rosacea (Adult Acne)
  • Scabies
  • Sciatica
  • Sexually Transmitted Disease
  • Shingles (Varicella-Zoster Virus)
  • Sleep Apnea
  • Sore Throat
  • Strep Throat
  • Sunburn
  • Syncope
  • Tennis Elbow (Lateral Epicondylitis)
  • Tension Headaches
  • Thyroid Disease
  • Tonsillitis
  • Trichomoniasis
  • Urinary Incontinence
  • Urinary Tract Infection
  • Vaginitis
  • Venous Insufficiency
  • Yeast Infections
View all 93 Specialties +


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About Craig Nielsen, MD

Craig Nielsen, MD, FACP, is a staff physician in the Department of General Internal Medicine, located on the Main Campus of Cleveland Clinic. He was appointed in 2002 subsequent to serving as associate staff physician, assistant staff physician and clinical associate of that department. In addition to his current appointment, he also serves as program director of the Cleveland Clinic Internal Medicine Residency Program, Vice Chairman of Education for the Medicine Institute, Vice Chairman of the Department of Internal Medicine and Assistant Professor of Medicine, Case Western Reserve School of Medicine, Cleveland. Dr. Nielsen is board-certified in internal medicine by the American Board of Internal Medicine. His special interests include preventive medicine, alcoholism, diabetes and men's health.

Dr. Nielsen received his medical degree from the University of Vermont College of Medicine, Vermont. He  has been named as a "Top Doc" by Cleveland Magazine from 2006 to 2011. In 2009, Dr. Nielsen was recognized by the National Committee for Quality Assurance (NCQA) for the quality of his care of diabetics (Diabetes Physician Recognition Program).

He has authored and presented a broad range of topics including hypertension, alcoholism, cervical cancer screening, preventive medicine, suicide and medical education. Dr. Nielsen is a member of the Medical Student Promotion and Review Committee, the Governor's Advisor Council of the Ohio Branch of the American College of Physicians(ACP), and the Cleveland Clinic Graduate Medical Education Committee, among others.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Residency - Cleveland Clinic
Internal Medicine
Cleveland, OH

Medical Education - University of Vermont College of Medicine
Burlington, VT

Undergraduate - Wheaton College
Wheaton, IL


  • Internal Medicine

Specialty Interests

Diabetes, lipids, hypertension, Heart Disease, preventive medicine

Awards & Honors

  • Cleveland Clinic Department of General Internal Medicine – Physician of the Year Award, 2004
  • Cleveland Clinic Department of General Internal Medicine – Teamwork Award, 2004
  • 'Top Docs,' Cleveland Magazine – 2006 to 2011
  • CCF Internal Medicine Residency Program - Best Internal Medicine Senior Morning Report Staff Award: 2004-2005
  • CCF Internal Medicine Residency Program – Teacher of the Year (General Internal Medicine) – 2005-2006
  • CCF Internal Medicine Residency Program – Teacher of the Year (General Internal Medicine) – 2007-2008
  • Scholarship in Teaching Award, Case Western Reserve University  - Program Directors Certificate Program - 2010
Research & Publications

Research & Publications

See publications for Craig Nielsen, MD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 1/2/2024, Dr. Nielsen has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

257 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
5 out of 5
Explains 5
Listens 4.6
Courtesy, Respect & Concern 5
Patient Rating of Doctor 5

74 Patient Comments

Reviewed on Jun 10, 2024

Dr. Nielsen and team are the best.

Reviewed on Jun 10, 2024

Dr. Nielsen is a wonderful, caring physician.

Reviewed on Jun 10, 2024

We are very happy with the care that we receive from the Cleveland Clinic/ especially Dr. Craig Nielsen and his entire crew of assistants.

Reviewed on May 31, 2024

Outstanding doctor and person. He took the time to listen to me.

Reviewed on May 24, 2024

I'm so happy Dr Nelson accepted me as a patient he has been very caring and understanding to help my health Dr Nelson is very knowledgeable about medicine in our respect his opinions

Reviewed on May 20, 2024

Dr Nielsen listened to my chart symptoms and had me come to an inperson appointment with him

Reviewed on May 20, 2024

Dr Nielsen always listens to your problems and comes up with options and a solution

Reviewed on May 10, 2024

Dr Nielsen is excellent. Professional, knowledgeable, caring, friendly - outstanding care

Reviewed on May 8, 2024

Dr Nielsen is very thorough

Reviewed on Apr 30, 2024

Dr Nielsen makes sure the next appointment for me Is scheduled to my satisfaction before I leave the department. This really helps.However, If I need to see him before the next appointment, I can.

Reviewed on Apr 30, 2024

Dr. Craig Nielsen is an exceptional doctor, caring, thorough, knowledgeable, kind, respectful and just plain NICE along with being brilliant I am so fortunate to be a patient in his practice.

Reviewed on Apr 30, 2024

Dr. Nielsen is very aware of my past and current background as a patient and as a person. He is exceptional in that respect and treats me as a complete human being, not just a patient. He carefully checks for any life changes that may make a difference in my care. All that, and he is just a very nice person.

Reviewed on Apr 26, 2024

Dr Neilson is the best

Reviewed on Apr 26, 2024

Dr. Is very personable when get to see him.

Reviewed on Apr 24, 2024

Long time PCP. Excellent and caring person and doctor

Reviewed on Apr 22, 2024

Doctor is always very responsive and caring during appointments and mychart responses.

Reviewed on Apr 3, 2024

Dr. Nielsen. Is very kind and concerning.

Reviewed on Mar 25, 2024

The best care, professional and great follow up on other visits.

Reviewed on Mar 20, 2024

Dr. Nielsen is an excellent doctor. We are grateful to have him as our PCP

Reviewed on Mar 6, 2024

Making my appointment with Dr. Craig Nielsen was very easy to make.

Reviewed on Mar 6, 2024

Dr. Craig Nielsen was very professional with me and he answered all my questions. He took his time with me and I felt extremely comfortable after this appointment.

Reviewed on Mar 4, 2024

Dr. Nielsen is quite simply the best doctor I have ever visited. I am extremely happy with him and his office.

Reviewed on Mar 4, 2024

Dr. Nielsen is very professional and friendly, he addresses every question I have with Care and often remembers concerns from previous visits that I forgot about.

Reviewed on Feb 14, 2024

I have a difficult condition with Covid Long, specifically chronic fatigue. The Doctor has been completely helpful in seeking treatments for my conditiom

Reviewed on Feb 12, 2024

Dr . Nielsen and his staff are truly outstanding!

Reviewed on Feb 2, 2024

Great experience. Dr Nielsen is professional , friendly and caring. He really cares about me getting healthier.

Reviewed on Feb 2, 2024

Dr. Nielson is prompt, caring and an excellent physician.

Reviewed on Jan 30, 2024

Dr. Neilsen and his staff are phenomenal. Usually on time and takes the time to listen and get the answers. More staff like him are needed. One of the best docs at CCF!!!

Reviewed on Jan 30, 2024

I value Dr. Nielsen's care and concern for me.

Reviewed on Jan 12, 2024

Dr. Nielsen is a very attentive doctor. He is timely and professional.

Reviewed on Jan 12, 2024

I have recommended Dr. Nielsen to love ones.

Reviewed on Jan 5, 2024

Dr Nielson is an outstanding physician of superb character. I am fortunate to have him as my Primary Care Dr.

Reviewed on Dec 27, 2023

Dr. Nielsen has taken the time to establish a very healthy, supportive relationship with me over the past 15 years. I have referred literally dozens of patients to (at least try to) visit him at the Clinic.

Reviewed on Dec 27, 2023

It is alway easy to get an appointment and communicate with Dr. Nielsen

Reviewed on Dec 22, 2023

Dr. Nielsen is an excellent doctor. Thanks be to our Lord almighty for he's my PCP

Reviewed on Dec 20, 2023

Dr. Nielsen has been my PCP for many years, consistently listening to my concerns and providing good advice, in addition to care based on my many medical conditions.

Reviewed on Dec 18, 2023

Dr Nielsen is always compassionate and helpful when a decision when a difficult decision needs to be made

Reviewed on Dec 18, 2023

Dr. Craig Nielsen is outstanding. He is always caring and knowledgeable. We are so fortunate he is on staff at Cleveland Clinic and grateful he is caring for us.

Reviewed on Dec 18, 2023

Our gratitude to Dr. Nielsen, and to Cleveland Clinic for having him on staff providing excellent medical care .

Reviewed on Dec 13, 2023

It is always good to see him he's a great doctor

Reviewed on Dec 4, 2023

I am grateful to have a Very thorough, professional, and compassionate doctor.

Reviewed on Nov 29, 2023

Dr. Nielsen is always pleasant and I find him to be genuinely concerned that my questions are answered and that he has given me as much information as possible to understand my condition and to make informed decisions about my health.

Reviewed on Nov 29, 2023

Excellent Provider

Reviewed on Nov 28, 2023

Dr. Nielsen is a fantastic physician. He spent time with me, made eye contact, answered all of my questions, was thorough, and even walked me to the scheduling office to set up my next appointment

Reviewed on Nov 20, 2023

Dr. Nielsen is always the best possible provider of the medical service for my health!Always grateful for the best service received and all the staffs also are excellent and kind and pleasant.

Reviewed on Nov 15, 2023

Dr Nielson expressed empathy with my condition as no doctor ever has. He truly cares.

Reviewed on Nov 8, 2023

Dr Nielsen is extremely thorough and quite honestly provides Wold Class Care

Reviewed on Nov 8, 2023

Dr. Nielsen is the best doctor I have been associated with , at the Cleveland clinic.

Reviewed on Oct 25, 2023

I am so fortunate in having Dr. Nielsen as my primary care physician - for several decades. His knowledge and care are at the heart of my reaching 83 and able to enjoy life.

Reviewed on Oct 25, 2023

Dr. Nielsen was very thorough with me relating my past history of health situations and we addressed the present. I had no new health situations that were bothering me even though Dr. Nielsen asked me several questions.

Reviewed on Oct 18, 2023

Dr Nelson is a great physician he's accomplished a lot for me in the last 15 years!

Reviewed on Oct 16, 2023

My appointment with Dr Nielsen and his staff is always a pleasure. He takes time to answer all my questions and develop a plan for any necessary follow-up.

Reviewed on Oct 13, 2023

Dr. Nielsen is always awesome! The best!

Reviewed on Oct 9, 2023

Dr Nielsen is outstanding

Reviewed on Oct 9, 2023

Dr. Nielsen is very good health provider he is all ways available for his patients.

Reviewed on Oct 9, 2023

Dr Nielsen is the best physician I've ever had. He always listens and is very thorough.

Reviewed on Oct 6, 2023

My primary care physician addressed all my concerns.

Reviewed on Oct 6, 2023

Dr. Nielsen is my primary care for many reasons including but not limited to , competence, caring, and responsiveness.

Reviewed on Sep 25, 2023

Love Dr. Nielsen

Reviewed on Sep 18, 2023

Dr. Nielsen is the greatest medical professional - and human being - I have ever known.

Reviewed on Sep 18, 2023

Some appts are made as follow-up, so no problem scheduling those. Usually, try to fit them into my schedulel which is great. Great service in Dr. Nielsen's office.

Reviewed on Sep 18, 2023

I have been coming to this dept since Dr Nielsen first came to CC, and always been treated well, impressed with his care and concern for me as patient and person. Great doc.

Reviewed on Aug 30, 2023

Dr. Neilson is a great doctor.

Reviewed on Aug 30, 2023

I had an excellent appointment with Dr. Craig Nielsen. I was taken on time.

Reviewed on Aug 21, 2023

Doctor neilson is very thorough and caring great doctor

Reviewed on Aug 18, 2023

Dr Nielsen is always the best

Reviewed on Aug 9, 2023

Dr. Nielsen is an outstanding physician in every way! He is friendly, listens well, and has an outstanding body of knowledge. It is always a pleasure to consult with him and he really is caring. An outstanding asset to the Cleveland Clinic!

Reviewed on Aug 9, 2023

Dr Nielsen is clearly a respected and well versed in people and medical skills

Reviewed on Jul 17, 2023

Dr. Nielson is the best. I'm very fortunate to have him as my doctor.

Reviewed on Jul 17, 2023

Dr. Nielson has been in my primary care physician for decades. I am very happy with his attention to my health needs.

Reviewed on Jul 12, 2023

Dr. Nielsen is the best!!!

Reviewed on Jul 10, 2023

Dr. Nielsen has been my personal physician for over 20 years. He embodies everything to which a Cleveland Clinic physician should aspire.

Reviewed on Jul 10, 2023

Dr Nielsen and his office staff provide exemplary care for me.

Reviewed on Jul 5, 2023

Outstanding physician

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