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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 Care and Treatment
  • Diabetes Center
  • Fine Needle Aspiration
  • General Endocrinology
  • Thyroid Aspiration
  • Thyroid Ultrasound
  • Thyroid Ultrasound and Biopsy
  • Women's Health
View all 8 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, Gestational
  • Empty Sella
  • Endocrine Disorders
  • Familial Multiple Endocrine Neoplasia
  • Fasting Hypoglycemia
  • Galactorrhea
  • Goiter
  • High Blood Pressure (Hypertension)
  • High Cholesterol
  • Hirsutism
  • Hyperaldosteronism
  • Hyperandrogenism
  • Hypercalcemia
  • Hyperparathyroidism
  • Hyperprolactinemia
  • Hyperthyroidism
  • Hypertriglyceridemia
  • Hypocalcemia
  • Hypoparathyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Osteopenia
  • Osteoporosis
  • Panhypopituitarism
  • Parathyroid Disease
  • 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 48 Specialties +


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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

Fellowship - Brigham & Women's Hospital
Boston, MA

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

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

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 - Endocrinology, Diabetes and Metabolism
  • Internal Medicine

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 4/19/2024, Dr. Lansang has reported the financial relationships with the companies listed below. 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

244 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

48 Patient Comments

Reviewed on Jun 12, 2024

Getting an appt with dr lansang, or her assistant, was months out for in person. I got lucky the day I called that she just had a virtual appt open up, although it was earlier than she requested for. I was pleased to have the appt when we did.

Reviewed on Jun 12, 2024

Dr Lansang is extremely relatable and easy to speak with. She is thorough and concise.

Reviewed on May 10, 2024

Dr Lansang is outstanding! She is intelligent, fully understands diabetes, cares about her patients, is proactive and a joy to interact with.

Reviewed on May 8, 2024

Dr Lansang is an outstanding doctor who takes time to hear your questions, respond.clearly and always helpful.

Reviewed on Mar 15, 2024

Every provider I've seen at Cleveland Clinic has given an excellent level of care and attentiveness, Dr. Lansang included. I am very fortunate to have access to such excellent providers.

Reviewed on Feb 28, 2024

Dr langsang is a great dr

Reviewed on Feb 23, 2024

I think Dr. Lansang explained things way more than anyone has ever explained thyroid things to me before.

Reviewed on Feb 21, 2024

Had to wait 3 weeks for the visit and Dr Lansing showed up late, was rushed and had to leave early. My concerns were not addressed. I was given unclear instructions for upcoming labs. This resulted in further delays since I have to wait 2 weeks for another visit. My concerns has still not been addressed.

Reviewed on Feb 13, 2024

Dr. Lansang is great. She listens to my concerns and is a very caring doctor.

Reviewed on Feb 5, 2024

Dr Lansang is excellent!! She is thorough and answers all questions. She always provides a detailed document to help you remember the discussion in her office. I appreciate and respect her both professionally and personally.

Reviewed on Jan 29, 2024

She was very attentive to my needs and offered suggestions.

Reviewed on Jan 29, 2024

The Dr listened well and thought out loud as she processed information. I liked knowing her considerations and willingness to track down a cause

Reviewed on Jan 29, 2024

Great doctor

Reviewed on Jan 23, 2024

Dr Lansing went over and beyond in helping me with several issues.

Reviewed on Jan 17, 2024

Communication with Dr Lansang and her office is outstanding.

Reviewed on Jan 17, 2024

Dr. Lansang is outstanding. I love Dr Lansang.

Reviewed on Jan 15, 2024

Over the lengthy and convoluted course of my interrelated chronic illnesses, Dr. Lansang has been a stalwart. She has consistently provided skilled, highly knowledgeable care. She Is terrific.

Reviewed on Jan 10, 2024

This provider makes it her professional business to read the patient's history and relates everything to the medication. Provider understands the patient's numbers and has an understanding to progress or lack of and adjust medications based on historical readings. My input is very much considered.

Reviewed on Jan 10, 2024

Dr. Lansang is extremely passionate about me as her patient. I feel the legitimacy in her attentiveness and concern for my health. She response to My chart and if not her one of her staff immediately respond to my concerns. Cleveland Clinic should make every effort to never lose her as a Doctor. There are very few that are as efficient or caring as Dr. Lansang.

Reviewed on Jan 9, 2024

Dr. Lansang is absolutely outstanding.

Reviewed on Jan 5, 2024

Dr. Lansang is always up to date on the diabetic literature and I appreciate her including it in our discussions. I worry that she is often rushed during Zoom sessions, but that seems to be the case with all Clinic physicians in this wave of telemedicine.

Reviewed on Dec 14, 2023

Dr Lansang was outstanding in all respects.

Reviewed on Dec 5, 2023

Very attentive, quick response and always has great concern for her patients. Listens to concerns of patients about staff also. I speak very highly of Dr. Lansang and the staff at the Cleveland Clinic Endocrinology Department.

Reviewed on Dec 5, 2023

Dr. Lansang has always explained everything and entertained indepth answers to detailed questions. She always shows the most concern for your wellbeing as a human and her patient.

Reviewed on Nov 29, 2023

She was prepared had read the chart remembered things from our last visit was kind, and very considerate

Reviewed on Nov 18, 2023

Dr Lansang is a great physician. She is also a kind and caring person. I have been seeing her for many years since I had some thyroid issues and had my thyroid taken out. She's one of the best physicians I've had the pleasure of seeing.

Reviewed on Nov 17, 2023

Dr Lansang is thorough and caring

Reviewed on Nov 15, 2023

She is a wonderful caring doctor I really enjoy having her as my endocrinologist.

Reviewed on Nov 15, 2023

She is very knowledgeable

Reviewed on Nov 13, 2023

Dr. Lansang is a wonderful doctor and person. She is knowledgeable and personable. I recommend her to others looking for an Endocrinologist

Reviewed on Nov 13, 2023

Response from the message web portal after sending a message to my provider has been returned in a timely manner as of date

Reviewed on Nov 13, 2023

My provider Dr Lansang is very skilled and knowledgeable. I trust her medical knowledge and feel comfortable with her. The video appointment had a few glitches and caused some frustration. The video appointment is convenient especially when you have to travel to for your appointment.I feel it is ok for some appointments but not all. Can be a bit inpersonal.

Reviewed on Nov 3, 2023

Dr. Lansang is an excellent caring provider

Reviewed on Nov 3, 2023

She has changed, spends less time explaining or asking .. Hospital policy most likely

Reviewed on Oct 28, 2023

Dr. Lansang was highly recommended to me and I see why! She is personable, professional, and listens so well. She gives good explanations that I can understand and responds promptly to my My Chart messages or phone calls.

Reviewed on Oct 6, 2023

Dr. Lansang has been a great doctor and has provided me with clear instructions each time we meet.

Reviewed on Sep 27, 2023

Dr. Lansang is an excellent doctor! She cares for her patients and explains things thoroughly. I would highly recommend her to anyone seeking an endocrinologist for answers to their health concerns.

Reviewed on Sep 23, 2023

Dr. Lansang listened carefully and thought deeply about my specified case rather than just using test results.

Reviewed on Sep 19, 2023

Dr Lansang is very good!

Reviewed on Sep 12, 2023

I am very comfortable with Dr Lansang. She is always patient and listens to any of my concerns and takes her time to explain things so I understand.

Reviewed on Aug 28, 2023

Dr. Lansang is very caring and professional.

Reviewed on Aug 25, 2023

Dr. Lansing is one of the most educated and informative doctors that I've had the opportunity to work with. She is always pleasant, thorough, extremely informative and I always leave feeling confident and educated.

Reviewed on Aug 18, 2023

Dr. Lansang is the best endocrinologist I've had in 30 years. She is great at trouble shooting issues, and is very good at communicating directions to help improve hemoglobin A1C values.

Reviewed on Aug 2, 2023

Dr Langsang explained everything very clearly and listened to all my questions and concerns

Reviewed on Jul 24, 2023

The support staff for Dr Lansang and the endocrinology dept are ptofessional and very helpful.

Reviewed on Jul 24, 2023

Dr Lansang is wonderful. She is patient, she listens and addressed all issues. I feel fortunatr to have her as my doctor.

Reviewed on Jul 22, 2023

Would highly recommend her, she's an amazing doctor who listens to her patients

Reviewed on Jul 18, 2023

Extremely happy with the care provided by physician

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