Gregory Ajemian, M.D.
Internal Medicine Physician · Garden City, NY
Gregory Ajemian, M.D. is an internal medicine physician with a practice address in Garden City, New York, and NPI 1962407627, issued on Jun 17, 2005. Check the license (New York 171659, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Gregory Ajemian
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 171659 NY
MD040599L PA
Self-reported in NPPES; status is on the state search - Practice location
- 212 Nassau Blvd, Garden City, NY 11530
- Phone
- (516) 637-2265
- Enumerated
- Jun 17, 2005
- Record last updated
- Jan 9, 2026
- Medicare enrollment
- Enrolled (PECOS I20110411000362); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 212 Nassau Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Annamaria Patelli, M.D.Internal Medicine Physician1376548032
Verify Gregory Ajemian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 171659Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average internal medicine physician in 2024
4,357 Medicare Part D claims for 365 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Duloxetine Hcl262 claims
- Atorvastatin Calcium197 claims
- Rosuvastatin Calcium172 claims
- Jardiance167 claims
- Metformin Hcl159 claims
- Losartan Potassium157 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.
Industry payments in 2024: $1,578.20
73 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gregory Ajemian among 12,067 internal medicine physician records in New York
Gregory Ajemian, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% 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, 92% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1982 · median 2002 among the 7,221 with a school on file
- Record last updated2026 · 61% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 internal medicine physician records list a practice address in Garden City
They are 48 of the 2,065 NPPES records with a practice address in Garden City, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Garden City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Charles Annunziato, MDGarden City, NY 115301700885316
- Francisca Ariola-Hopkins, MDGarden City, NY 115301821080698
- Michael Carl, DOGarden City, NY 115301164413241
- Miguel Cima, MDGarden City, NY 115301053374868
- Vincent Geraci, MDGarden City, NY 115301396702262
- Albert Heuser, M.D.Garden City, NY 115301497716252
- Lisa Lehnert, D.O.Garden City, NY 115301528035870
- Deborah McBane, DOGarden City, NY 115301487633442
Common questions
What is Gregory Ajemian, M.D.'s NPI number?
Gregory Ajemian, M.D.'s National Provider Identifier (NPI) is 1962407627, issued on Jun 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Ajemian, M.D. located?
The NPPES record lists a practice address at 212 Nassau Blvd, Garden City, NY, 11530. Phone: (516) 637-2265. Providers update this record themselves, so call before visiting.
How can I verify Gregory Ajemian, M.D.'s license?
NPPES lists New York license number 171659, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Ajemian, M.D. prescribe under Medicare Part D?
In 2024, Gregory Ajemian, M.D. had 4,357 Medicare Part D claims for 365 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.