alert icon Coronavirus
Now scheduling COVID-19 vaccines for ages 12+, boosters and third doses
Schedule your appointment
COVID-19 vaccine FAQs

Going to a Cleveland Clinic location?
New visitation guidelines
Masks required for patients and visitors (even if you're vaccinated)

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 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

52 Patient Comments

Reviewed on Sep 1, 2021

Dr. Lansang very much involves me in the discussion of my care, and she explains all of her decisions with clarity.

Reviewed on Aug 30, 2021

Had a very good visit with Doctor Lansing and her intern.

Reviewed on Aug 30, 2021

Appreciated the opportunity to discuss my thyroid condition with Doctor Lansing.

Reviewed on Aug 30, 2021

Dr. Lansang is working with my sensitivity to any type of medication. She responds quickly with messages regarding my condition. I know she is extremely busy with her patient load. I've had many doctors in the past dismiss my inability to metabolize meds.

Reviewed on Aug 27, 2021

I started seeing my doctor in February of this year and yet to have any answers or treatment

Reviewed on Aug 19, 2021

I am happy with Dr. Lansing and her staff. Wait time minimal. She appears very concerned about my health when I have seen her.

Reviewed on Aug 18, 2021

I have been happy with Doctor Lansang

Reviewed on Aug 9, 2021

Dr. Lansang is very personable and listens to your concerns. She provides detailed explanations in layman terms that are easy to comprehend and shows that she truly cares about you as a person and your well being.

Reviewed on Jul 19, 2021

Dr. M. Cecilia Lansang is a caring, knowledgeable and thorough physician. She has been overseeing my healthcare for a while now and I have the utmost respect and confidence in her

Reviewed on Jul 2, 2021

The Doctor was wonderful. She was able to explain and put me at ease. I wish all doctors were like her!

Reviewed on Jun 22, 2021

Dr Lansing has been so great! She has answered every question asked & gotten back to me whenever I have a question or concern. Brianna has also been wonderful to me in this process.

Reviewed on Jun 22, 2021

Dr Lansing provided care, clear explanation of the care plan while listening to all my concerns & addressing. She's an excellent caregiver!

Reviewed on Jun 8, 2021

Dr. Lansang is the best diabetes doctor that I have had during my 50+years of battling this disease She is caring and helpful and we normally arrive at a good solution to my problems. if we do not she continues to make adjustments to my dosages

Reviewed on May 24, 2021

I have been a diabetic since age 12. I am now in my late 30s, and in all that time, no other specialist I've seen has been as thoughtful and good as Dr. Lansang.

Reviewed on May 18, 2021

Everything was excellent! Dr. Lansang was very helpful.

Reviewed on May 4, 2021

I have recommended Dr. Lansang and patient still sees her.

Reviewed on May 4, 2021

Dr.Lansang is definitely superior in her field! she is also compassionate and very thorough!

Reviewed on May 3, 2021

Dr. Cecilia Lansang is an excellent doctor. She is always prepared, and reviews my case before entering the room. She listens to my concerns and explains her thinking to help me make decisions. She is very focused on preventative care and shows her concern for the patient's welfare. She is very thorough when writing her notes of the visit, which reflect the actual visit rather than a reiteration of what was previously in the patient's chart. I have a lot of respect for her medical opinion.

Reviewed on May 3, 2021

Dr. Lansang is an outstanding physician. I have never had a doctor who took the time to explain things and listen to my concerns.

Reviewed on Apr 23, 2021

Dr Lansang is wonderful!

Reviewed on Apr 20, 2021

Dr.Lang has great energy I really like her..she asks questions and make sure she answers any questions that you may have.

Reviewed on Apr 20, 2021

Cecelia Lansang is a fantastic doctor for treating diabetes. She is extremely knowledgeable, collaborative with the patient, respectful, kind, caring, and she knows how to work with the patient to get desired, good results. If she were to leave to go somewhere else I would follow her - that's how good she is.

Reviewed on Apr 20, 2021

See my comments above about Dr. Lansang. She is a keeper.

Reviewed on Apr 16, 2021

Dr. Lansing is an excellent physician.

Reviewed on Apr 16, 2021

Dr. Lansang provided an excellent experience.

Reviewed on Apr 13, 2021

Great doctor!

Reviewed on Apr 12, 2021

*Dr. Lansang is the best!

Reviewed on Apr 7, 2021

Dr. Lansang is an excellent endocrinologist. I trust her with me care.

Reviewed on Mar 30, 2021

Dr. Lansang always listens and provides excellent care. She is prompt with answering My Chart questions and follows-up as needed.

Reviewed on Mar 26, 2021

I highly recommend Dr LanSang! she is always patient and kind and answered all my questions! she truly cares about her patients and it shows!

Reviewed on Mar 5, 2021

Dr. Lansang is very caring and looking out for my best interest concerning my healthcare. In my opinion I feel she overexceeds this scale rated survey along with everyone from the start who assisted me in getting to my appointment. Thanks

Reviewed on Mar 5, 2021

In phase one of this survey I commented about doctors and others. Can't compliment enough. I give A+. thanks

Reviewed on Mar 5, 2021

I was extremely impressed with Dr. Lansang's level of intelligence which she balanced very well with a high degree of compassion for my issues and for me as a person. In other words, she was not only highly qualified, she also had an awesome bedside manner!

Reviewed on Mar 2, 2021

always have the best care and confidence in Dr Lansang and her expertise in managing my Diabetes.

Reviewed on Mar 1, 2021

I have never had a bad experience with Dr. Lansang. she is always compassionate and caring. she always involves my wife and I in all of our discussions.

Reviewed on Feb 15, 2021

Excellent physician

Reviewed on Feb 9, 2021

I was never given a long time to wait. As soon as i called to set an appointment, i got it and met the doctor the following week, that was quick

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 18, 2021

I love my Doctor she is very easy to talk to, and she explains everything thing in detail

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.

Related Videos Featuring M. Cecilia Lansang, MD, MPH

Related Videos Featuring M. Cecilia Lansang, MD, MPH

Back to Top