alert icon Important Updates + Notice of Vendor Data Event

Coming to a Cleveland Clinic location?
Hillcrest Cancer Center check-in changes
Cole Eye entrance closing
Visitation, mask requirements and COVID-19 information

Notice of Intelligent Business Solutions data event
Learn more

Department Endocrinology, Diabetes and Metabolism
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages English, Filipino
Surgeon No
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus

Specialties & Treatments

Treatment & Services

  • Diabetes Center
  • Fine Needle Aspiration
  • General Endocrinology
  • Specialty Women's Health
  • Thyroid Aspiration
  • Thyroid Ultrasound
  • Thyroid Ultrasound And Biopsy
View all 7 Treatment & Services +

Specialty in Diseases & Conditions

  • Adrenal disorders
  • Adrenal insufficiency
  • Adrenal Tumors
  • Beta-cell disorders
  • Calcium Disorders
  • Carcinoid Syndrome
  • Conn's Syndrome
  • Cushing's Syndrome
  • Diabetes
  • Diabetes - Management
  • Diabetes, Gestational
  • Empty sella
  • Endocrine Disorders
  • Familial Multiple Endocrine Neoplasia
  • Fasting hypoglycemia
  • Galactorrhea
  • Goiter
  • High Cholesterol
  • Hirsutism
  • Hyperaldosteronism
  • Hyperandrogenism
  • Hypercalcemia
  • Hyperparathyroidism
  • Hyperprolactinemia
  • Hypertension - High Blood Pressure
  • Hyperthyroidism
  • Hypertriglyceridemia
  • Hypocalcemia
  • Hypoparathyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Osteopenia
  • Osteoporosis
  • Panhypopituitarism
  • Parathyroid Disease Description
  • Pheochromocytoma
  • Pituitary Disorders
  • Pituitary Tumors
  • Polycystic Ovary Syndrome
  • Primary Hyperaldosteronism
  • Prolactin Excess States
  • Prolactinoma
  • Reactive hypoglycemia
  • Secondary Hyperparathyroidism
  • Thyroid and pregnancy
  • Thyroid Cancer
  • Thyroid Disease
  • Thyroid Nodule
  • Vitamin D Deficiency
View all 49 Specialties +


Is Cleveland Clinic Part of Your Insurance?

Review a list of accepted insurance plans for our Northeast Ohio locations or learn more about purchasing a contracted managed care plan.

View All Plans

About M. Cecilia Lansang, MD, MPH

Dr. Lansang is a Professor of Medicine at Cleveland Clinic Lerner College of Medicine of the Case Western Reserve University and is the Director of Diabetes Technology in the Department of Endocrinology, Diabetes and Metabolism here at the Cleveland Clinic.  She received her clinical and research training in Endocrinology, Diabetes and Metabolism at the Brigham and Women's Hospital, Harvard medical Schools, Boston, MA.  She obtained her Master of Public Health degree from the Harvard School of Public Health.  She had served as faculty at the Harvard School of Medicine and as staff physician at the Brigham and Women's Hospital.  She then moved on to the University of Florida, where she was interim chief of the Division of Endocrinology before joining the Cleveland Clinic. 

Dr. Lansang has published a book on diabetes, and research articles in the realm of inpatient diabetes, diabetic renal disease, steroids, and medical education, and has received multiple awards in excellence in teaching.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Graduate School - Harvard School of Public Health/Harvard University
Boston, MA USA

Fellowship - Brigham & Women's Hospital
Boston, MA USA

Residency - University of Santo Tomas Hospital
Internal Medicine

Internship - University of Santo Thomas
Internal Medicine
Manila, Philippines,

Medical Education - University of Santo Tomas Faculty of Medicine & Surgery
Manila, Philippines

Additional Training

  • Clinical and Research Fellowship, Brigham and Women's Hospital, Harvard Medical Schools, Endocrinology, Boston, MA 2001
  • Graduate school, Harvard School of Public Health, Boston, MA 2001


  • Internal Medicine
  • Internal Medicine - Endocrinology, Diabetes and Metabolism

Specialty Interests

Diabetes, hypoglycemic disorders, hypothyroidism, hyperthyroidism, thyroid nodules, PCOS, hirsutism, adrenal insufficiency, adrenal mass, prolactinoma

Awards & Honors

  • Magna cum laude, Doctor of Medicine, University of Santo Tomas, Manila
  • Summa cum laude, Bachelor of Science in Biology, Accelerated course, University of Santo Tomas, Manila
  • Exemplary Teacher of the Year, University of Florida, 2006, 2008, 2010
  • Excellence in Teaching, University of Florida, 2007, 2009
Research & Publications

Research & Publications

See publications for M. Cecilia Lansang, MD, MPH.

(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 10/21/2022, Dr. Lansang 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

157 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
4.9 out of 5
Explains 4.9
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

39 Patient Comments

Reviewed on Feb 22, 2023

Dr. Lansang was amazing

Reviewed on Feb 20, 2023


Reviewed on Feb 14, 2023

Dr. Lansing is very professional and caring and always has been.

Reviewed on Feb 13, 2023

Dr. Langsang is very respectful and caring. I couldn't ask for a better doctor.

Reviewed on Feb 3, 2023

Dr. Lansang was very pleasant and thorough.

Reviewed on Feb 2, 2023

Dr. Landsing is a blessing to have as my doctor! I wouldn't want anyone else caring for my thyroid and diabetes!!!

Reviewed on Jan 30, 2023

Waited for financial office to call me regarding an appointment with Dr Lansang's PA. I have out of network coverage and have been coming to Dr Lansang for years but I wasn't allowed to make appointment with PA per Dr Lansang's instructions until they called me. I was never called. Therefore waited 5 mo for scheduled appointment with Dr Lansang

Reviewed on Jan 30, 2023

Care is always outstanding with Dr Lansang and the staff.

Reviewed on Jan 30, 2023

Dr Lanseng is attentive, thorough, concerned

Reviewed on Jan 27, 2023

Dr. Lansang is always a joy to speak with--she takes time to answer questions and explain issues fully.

Reviewed on Jan 18, 2023

Dr. Lansang is alway extremely responsive and places her patients first!

Reviewed on Jan 18, 2023

Dr. Lansang is a wonderful physician. She truly puts her patients first and is a great educator.

Reviewed on Jan 3, 2023

Dr langsang is great professional plus knowledgeable

Reviewed on Dec 2, 2022

Dr Lansang is wonderful.

Reviewed on Dec 2, 2022

She always asks good questions, while providing good insight into various conditions.

Reviewed on Nov 7, 2022

No return call was needed. I am very pleased with Dr. Lasang's office.

Reviewed on Oct 25, 2022

Dr. Lansing was wonderful!

Reviewed on Oct 19, 2022

Love Dr Lansang

Reviewed on Oct 18, 2022

I am grateful that Dr. Lansang provided extraordinary patience, knowledge and interest in my condition, and helped enlighten me with thorough and understandable explanations. She was meticulous about confirming that she had understood my questions and comments.

Reviewed on Oct 5, 2022

Dr Lansang is top notch in all ways!!

Reviewed on Oct 4, 2022


Reviewed on Aug 23, 2022

I will have my internal medicine or primary care physician work with my problem I saw Dr. Lansang for. Dr. Lansang is an excellent physician but it is hard to see specialist when you have a working medication regimen.

Reviewed on Aug 23, 2022

Very hard to get in to see the doctor

Reviewed on Aug 23, 2022

The experience with Dr. Was great, she's great and I look forward to our future together

Reviewed on Aug 23, 2022

This was my first visit with dr.and I came away with a plan for my health care for my disease

Reviewed on Jul 27, 2022

Good connection, I could see and hear Dr. Lansang well. Communication was good and easy to understand.

Reviewed on Jul 27, 2022

Dr. Lansang gave very clear explanations and instructions. Paid attention to all my concerns. She was very thorogh.

Reviewed on Jul 21, 2022

All of the doctors, nurses, nurse practitioners, surgeons and nursing assistants have shown me nothing but respect and care since my transplant.

Reviewed on Jul 21, 2022

I asked Dr. Lansang to take me as a new patient and she has agreed. I feel I have gotten the best care from Cleveland Clinic staff and am shifting all my care there while keeping my primary physcian in Sandusky.

Reviewed on Jun 29, 2022

I couldn't be more pleased with Dr. Lansang's manner, expertise and standard of care.

Reviewed on Jun 24, 2022

Dr. Lansang is very thorough during any visit. She listens intently, cares about her patients and covers all questions and concerns.

Reviewed on Jun 8, 2022

Care provider was more concerned with me obtaining a dex crom ,than addressing my questions.

Reviewed on May 13, 2022

Dr Lansang is the best doctor I have ever had!

Reviewed on May 10, 2022

Dr. Lansang takes the time to help a patient understand what the diagnosis as well as walk through the different treatment options. In addition, she reviews lab values that are important to highlight pertaining to the disease and discusses insights into the future. She also provides information of current research and how it is applicable to the patient. This, I personally find incredibly helpful. The time she devotes to make sure her patient understands is also beyond appreciated. I am very satisified with my care and my relation with Dr. Lansang.

Reviewed on Apr 21, 2022

Great experience...wonderful knowledgeable physician.

Reviewed on Apr 21, 2022

Knowledgeable Caring physician

Reviewed on Apr 20, 2022

Dr Lansang is a fantastic doctor in man ways

Reviewed on Apr 5, 2022

I have the utmost trust in Dr Langsang. I have seen her for several years

Reviewed on Mar 25, 2022

She is a caring, kind physician

Back to Top