Lerzan S. Kizilay, MD
Internal Medicine Physician · Cambridge, MA
Lerzan S. Kizilay, MD is an internal medicine physician with a practice address in Cambridge, Massachusetts, and NPI 1285617027, issued on Nov 25, 2005. Check the license (Massachusetts 79533, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Lerzan S. Kizilay
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 79533 MA
Self-reported in NPPES; status is on the state search - Practice location
- Youville Hospital, Cambridge, MA 02138
- Phone
- (617) 876-4344
- Enumerated
- Nov 25, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (617) 234-7981
- Medicare enrollment
- Enrolled (PECOS I20050628000872); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at Youville Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cristina Collins, NPAdult Health Nurse Practitioner1235109935
- Jacqueline Germain, MDPhysical Medicine & Rehabilitation Physician1558343954
- Phyllis Inman, NPGerontology Nurse Practitioner1922081801
- Susan Pruyn, NPNurse Practitioner1699745307
Verify Lerzan S. Kizilay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 79533Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
97 Medicare Part D claims for 16 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lerzan S. Kizilay among 6,825 internal medicine physician records in Massachusetts
Lerzan S. Kizilay, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1991 · median 2004 among the 4,103 with a school on file
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
300 internal medicine physician records list a practice address in Cambridge
They are 300 of the 5,145 NPPES records with a practice address in Cambridge, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Cambridge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Susan Abookire, MDCambridge, MA 021381407859762
- Matthew Carmody, MDCambridge, MA 021381184624488
- Mark Friedman, MDCambridge, MA 021381760482921
- Eva Gassiraro, MDCambridge, MA 021381598762833
- Beth Goldman, MDCambridge, MA 021381457358798
- Charles Hatem, MDCambridge, MA 021381528065877
- David Hudacek, MDCambridge, MA 021381992707269
- Janine McCauley, MDCambridge, MA 021381487656617
Common questions
What is Lerzan S. Kizilay, MD's NPI number?
Lerzan S. Kizilay, MD's National Provider Identifier (NPI) is 1285617027, issued on Nov 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Lerzan S. Kizilay, MD located?
The NPPES record lists a practice address at Youville Hospital, Cambridge, MA, 02138. Phone: (617) 876-4344. Providers update this record themselves, so call before visiting.
How can I verify Lerzan S. Kizilay, MD's license?
NPPES lists Massachusetts license number 79533, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lerzan S. Kizilay, MD prescribe under Medicare Part D?
In 2024, Lerzan S. Kizilay, MD had 97 Medicare Part D claims for 16 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.