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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 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 +


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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 the Inpatient Diabetes Service of 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, 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 12/26/2020, 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.

Consulting and/or Speaking. Dr. Lansang receives fees of $5,000 or more per year as a paid consultant, speaker or member of an advisory committee for the following companies:

  • Sanofi S.A.

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

223 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 Feb 3, 2021

Dr. Lansang was most gracious, informative and helpful.

Reviewed on Jan 27, 2021

I'm a Cleveland Clinic retiree and worked in Human Resources for 35 years. I've had the pleasure of being treated by wonderful caregivers over those years. I would rate Dr. Lansang as my favorite and most caring doctor. She is wonderful when I see her in person and on virtual appointments. She is always very helpful if I ask her something on MyChart also.

Reviewed on Jan 27, 2021

Dr. Lansang was obviously well prepared for our meeting. She had done a review of my medical records and history and was aware of all current and even past medications. Could not have been happier about my first virtual appointment. Thank you, Greg

Reviewed on Jan 5, 2021

My wife and I were very pleased with our experience with Dr. Lansang.

Reviewed on Dec 10, 2020

awesome doctor made me feel at ease . very happy to have her as my doctors!!

Reviewed on Dec 8, 2020

Love Dr. Lansing. She takes time with you, listens to your concerns, reviews past health and present health, offers suggestions and changes that might be needed. She's one of the best physicians I've ever had, and I work for one.

Reviewed on Dec 7, 2020

I cannot say enough about the care and compassion dr. Lansang showed during my visit. answered all my questions and she never rushed me at all. I wish every doctor I visit showed her professionalism and care.

Reviewed on Nov 25, 2020

Dr. Lansang is a great listener and a caring physician. I feel that she truly cares about my health.

Reviewed on Nov 25, 2020

Dr. Lansang answers my questions thoroughly, reviews my blood glucose levels, and is able to make the necessary adjustments to my insulin pump so that my blood glucose levels are better maintained.

Reviewed on Nov 25, 2020

Dr. Lansang is the best - knowledgeable, understanding and professional! She recommended I make an appointment with another physician for health issues unrelated to my diabetes.

Reviewed on Nov 10, 2020

Exceptionally follow-up experience with Dr. Lansang. Very impressed.

Reviewed on Oct 23, 2020

Dr. Lansang is a wonderful doctor. She's a great listener, is empathetic and always helps find the best approaches to my care.

Reviewed on Oct 9, 2020

Dr Lansang is excellent. She listens and we work as a partnership. I feel like I am in good hands with her. I would highly recommend Dr Lansang.

Reviewed on Sep 30, 2020

The doctor explained everything very well.

Reviewed on Sep 23, 2020

Fantastic Doctor I feel very good about her treatment

Reviewed on Sep 21, 2020

Dr. Lansang is always quick to respond to my questions and lab results. She is fantastic!

Reviewed on Sep 21, 2020

Dr. Lansang explained clearly and in details of my situation and treatments. I feel well informed and comfortable making decisions with her help.

Reviewed on Sep 17, 2020

Dr. Lansang is my favorite doctor. She listens, she remembers what we talked about before and she offers practical solutions. I can be honest about my diabetes and she is understanding. I always enjoy seeing her. I know we will have a couple good laughs during my visits.

Reviewed on Sep 14, 2020

doctor and her nurses are exceptionally good and prompt. schedulers and administrative are poor

Reviewed on Sep 14, 2020

the most responsive, personable and communicative doctor I deal with at the Clinic

Reviewed on Aug 14, 2020

Dr Lansang is very caring and concerned. I am thrilled that she is my endocrinologist.

Reviewed on Aug 14, 2020

excellent doctor

Reviewed on Aug 13, 2020

Dr. Lansang and the resident who saw me during this visit were both knowledgeable, insightful, and helpful.

Reviewed on Aug 11, 2020

Dr. Lansang has always made sure every concern I have is addressed to the best of her ability and I walk out of each appointment totally understanding my condition and treatments. The most important benefit of having Dr. Lansang as my medical provider is that I am treated as an individual person not just another patient. I make the two hour drive to see Dr. Lansang because I know she truly does care and respects me.

Reviewed on Aug 10, 2020

Dr lansang and her assistant went above and beyond trying to get my problem solved. They were both very courteous and congenital. They have done more in a short time then any other doctor has.

Reviewed on Aug 10, 2020

dr Lansang and her fellow were phenomenal!

Reviewed on Aug 7, 2020

I love visiting Dr Lansing, she wants to help you reach your goal.

Reviewed on Aug 4, 2020

Dr. Lansang took time to ask me lots of questions to fully understand my concerns. She offered recommendations, while helping me to make an informed decision. her expertise and care for me as a patient was very evident.

Reviewed on Jul 31, 2020

Dr. Lansang is wonderful and I am very pleased with her. She is prepared at my appointments and we discuss everything. I appreciate her concern, feedback, and input on my health.

Reviewed on Jul 31, 2020

Dr. is very concerned thorough and caring.

Reviewed on Jul 27, 2020

I consider myself fortunate to have Dr Lansang as my endocrinologist! There is not much more to say. she's is exceptional in all ways.

Reviewed on Jul 24, 2020

good experience with a doctor who stays on top of things

Reviewed on Jul 20, 2020

Dr. Lansang is a wonderful physician. She is kind, caring and knows her field of practice very well.

Reviewed on Jul 15, 2020

Dr. Lansang made me feel very comfortable and listened while including me care.

Reviewed on Jul 13, 2020

I have seldom felt as good about a healthcare visit as I did with Dr Lansing!

Reviewed on Jul 13, 2020

Dr. Lansing is so caring and helpful. She combines expertise with excellent interpersonal skills. I would recommend her to anyone without reservation.

Reviewed on Jun 19, 2020

Dr Lansing is one of the best doctors I have encountered. She is knowledgeable, caring and compassionate.

Reviewed on Jun 19, 2020

I always like seeing Dr Lansing in person but due to the circumstances of CoVid 19, this was a great option!

Reviewed on May 13, 2020

an amazing and so professional doctor

Reviewed on May 11, 2020

Dr. Lansang was very caring and easy to talk to. she addressed all my concerns in a professional matter.

Reviewed on May 8, 2020

Dr. Langsang continues to be very caring and gives me concise explinations.

Reviewed on May 6, 2020

I like to see the Dr. In person. Talk to her and she can observe any changes in my body.

Reviewed on May 4, 2020

Dr Lansang is wonderful she is dedicated efficient first doctor after years to find out what's wrong

Reviewed on Mar 11, 2020

M Cecelia Lansang is an outstanding endocrinologist. She thoroughly understands type 1 diabetes management and communicates clearly and respectfully to the patient. I have had T1D for over 30 years and seen a number of doctors for it. she is by far the best and I will not move or settle for anyone else at this point. My diabetes management is well in control and I enjoy working with her on it. I hope that the Cleveland Clinic realizes what a gem you have in her.

Reviewed on Mar 3, 2020

Dr. Lansang goes above and beyond in caring for her patients. It's wonderful that she is accessible for virtual visits and is very prompt with answering emails she receives.

Reviewed on Feb 26, 2020

very responsive provider and office

Reviewed on Feb 26, 2020

I was very impressed by Dr. Lansang's willingness to discuss my test results and treatment plan in a straightforward way.

Reviewed on Feb 20, 2020

I love Dr. Lansang but she jumped to conclusions and made a poor recommendation on how to treat some recent weight gain.

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