Gregory Ajemian, M.D.
NPI 1962407627 · Internal Medicine Physician · Garden City, NY
Gregory Ajemian, M.D. is a Internal Medicine Physician provider in Garden City, NY (NPI 1962407627).
Provider details
- NPI number
- 1962407627
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD040599L (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,272 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,044 | $151 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 714 | $19 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 220 | $8 |
| Advance Care Planning, First 30 Minutes99497 | 199 | $98 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 187 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Duloxetine Hcl | 262 | 91 |
| Atorvastatin Calcium | 197 | 66 |
| Rosuvastatin Calcium | 172 | 58 |
| Empagliflozinbrand: Jardiance | 167 | 43 |
| Metformin Hcl | 159 | 54 |
| Losartan Potassium | 157 | 50 |
| Celecoxib |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,578 across 73 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-17
- Last updated
- 2026-01-09
- Certified
- 2026-01-09
Frequently asked questions
- What is Gregory Ajemian's NPI number?
- Gregory Ajemian's National Provider Identifier (NPI) is 1962407627, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Ajemian's specialty?
- Gregory Ajemian is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Ajemian located?
- Gregory Ajemian's practice location on file with NPPES is 212 Nassau Blvd, Garden City, NY 11530-1267.
- What is Gregory Ajemian's phone number?
- The practice phone number listed in the NPPES registry for Gregory Ajemian is (516) 637-2265.
- Is Gregory Ajemian's NPI active?
- Yes — Gregory Ajemian's NPI (1962407627) is active in the NPPES registry as of the last update on 2026-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.