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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 - Management
  • Diabetes Center
  • Fine Needle Aspiration
  • General Endocrinology
  • Specialty Women's Health
  • Thyroid Aspiration
  • Thyroid Ultrasound
  • Thyroid Ultrasound and Biopsy
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 Cholesterol
  • Hirsutism
  • Hyperaldosteronism
  • Hyperandrogenism
  • Hypercalcemia
  • Hyperparathyroidism
  • Hyperprolactinemia
  • Hypertension - High Blood Pressure
  • 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

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

228 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

47 Patient Comments

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

Reviewed on Jul 3, 2023

She is very respectful and thorough

Reviewed on Jun 21, 2023

I foundI the doctor and staff to be very good and was very impressed with the care and recommendations by the doctor

Reviewed on Jun 19, 2023

Dr. Lansang is a wonderful Doctor, she is the reason I take better care of myself, before coming to Dr Lansang I thought there was no hope for my condition she changed that for me, I love how positive she is. I am also more positive because of her.

Reviewed on Jun 19, 2023

Dr Landing is the best.

Reviewed on Jun 13, 2023

Good experience. The doctor was professional, efficient, attentive to my wellbeing and a good listener.

Reviewed on Jun 13, 2023

The doctor was professional, efficient, attentive to my wellbeing and an excellent listener.

Reviewed on Jun 8, 2023

She was very through although I don't believe that the treatment will work

Reviewed on May 10, 2023

Dr. Lansang is very caring physician who take pains to understand me as a patient and very knowledgeable in her field. I am fortunate to have her manage my Diabetes.

Reviewed on May 9, 2023

Dr. Lansang was excellent and explained everything to me.

Reviewed on May 9, 2023

She is very thorough, kind and knowledgeable

Reviewed on Apr 25, 2023

Excellent Dr she was very attentive to my overall health great listener.

Reviewed on Apr 25, 2023

Dr. Langsang was very thorough. She had reviewed my medical history for the past years in detail prior to the visit and discussed/reviewed it with me thoroughly.

Reviewed on Apr 21, 2023

Dr Lansing showed the utmost care for me and my health!

Reviewed on Apr 3, 2023

Very caring and intelligent dr.

Reviewed on Apr 3, 2023

I did recommend her to another friend from my area

Reviewed on Mar 31, 2023

Dr. Lansang is wonderful. Very caring and very knowledgeable! A real asset to the Cleveland Clinic!

Reviewed on Mar 25, 2023

I am very pleased with my doctor

Reviewed on Mar 24, 2023

Dr Lansang has been my doctor for several years. She is outstanding.

Reviewed on Mar 22, 2023

Dr. Lansang is always pleasant, professional and caring. I always feel she is genuinely interested in providing the best possible care and listens to and addresses any concerns I have.

Reviewed on Mar 20, 2023

My doctor is a wonderful professional and I feel like we are a team with respect to my medical concerns.

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

Dr Lanseng is attentive, thorough, concerned

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 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


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