DR. GREGORY AJEMIAN (M.D.) – Internal Medicine Physician, NPI 1962407627
Preparing for Medicare enrollment?
Use our CMS-855 prep checklist: which form applies (855I, 855O, or 855A), readiness score, NPPES field map, and Section 12 documents. Reassignment uses CMS-855I Section 4F—not the discontinued CMS-855R form.
Open Medicare 855 Prep tool →Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
18,052 INTERNAL MEDICINE in NY
Provider Addresses for DR. GREGORY AJEMIAN (M.D.)
212 NASSAU BLVD
GARDEN CITY, NY 115301267
Phone: (516) 637-2265
Type: Mailing
1046, Esther Street, Franklin Square, Hempstead, Nassau County, New York, 11010, United States
FRANKLIN SQUARE, NY 110101407
Phone: (516) 775-9292
Fax: (516) 775-9294
Type: Mailing
225 NASSAU BLVD # B
W HEMPSTEAD, NY 115522247
Phone: (516) 775-9292
Fax: (516) 775-9294
Type: Location
1010 NORTHERN BLVD STE 328
GREAT NECK, NY 110215329
Phone: (516) 233-2484
Fax: (516) 304-5850
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 101 Open Payments records for all available years, with a total value of $2,150.
Total Amount is formed as General ($2,150) + Research ($0) + Ownership ($0) = $2,150.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: Boehringer Ingelheim Pharmaceuticals, Inc. ($326).
Total Amount
$2,150
General + Research + Ownership
Payments
101
Total payment records
General Amount
$2,150
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-10
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
No Medicare enrollment or revalidation data available for this provider in our database.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 905 | 253 | $0 |
| 99497 | Advance care planning, first 30 minutes | 198 | 193 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 173 | 173 | $0 |
| G0444 | Annual depression screening, 5 to 15 minutes | 171 | 171 | $0 |
| G0008 | Administration of influenza virus vaccine | 120 | 120 | $0 |
Insurance plans in this area (ZIP 11530)
Loading plans...
Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | NY | 90670 | Pneumococcal vaccine for injection into muscle | 22 | 22 |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.