2026 NPPES data Internal Medicine Physician NPI 1962407627 M.D.
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GREGORY AJEMIAN, M.D.

Internal Medicine Physician in GARDEN CITY, New York. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
4K
Medicare Part D claims · 403 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.6K
73 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GREGORY AJEMIAN, M.D. is a Internal Medicine Physician ([object Object]) practicing in GARDEN CITY, New York with a Medicare Part D prescribing footprint of 4K claims across 403 beneficiaries — 17% brand-name prescribing . Industry payments of $1.6K across 73 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GREGORY AJEMIAN, M.D. filed 3,987 Medicare Part D claims in 2023 across GARDEN CITY, New York. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

GREGORY AJEMIAN, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

GREGORY AJEMIAN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 06/17/2005

NPI 1962407627

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

3,987 47% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in New York

How Internal Medicine Physician compares to other specialties among New York providers

New York providers

Internal Medicine Physician share within New York

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within New York

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

GREGORY AJEMIAN, M.D. is a Internal Medicine Physician provider practicing in GARDEN CITY, New York, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1962407627. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

GREGORY AJEMIAN, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 212 NASSAU BLVD, GARDEN CITY, NY, 11530, with a listed phone of (516) 637-2265. NPI 1962407627 was issued on 06/17/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AJEMIAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 3,987 prescription claims written by this provider, covering 403 Medicare beneficiaries and totaling roughly $685K in drug spend, split 17% brand-name and 83% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

212 NASSAU BLVD
GARDEN CITY, NY 11530

Provider Details

NPI 1962407627
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 06/17/2005

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for GREGORY AJEMIAN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.6K

Largest payer

Boehringer Ingelheim Pharmaceuticals, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — New York NYSBPMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 — they are NOT specific to GREGORY AJEMIAN, M.D.. To verify GREGORY AJEMIAN, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

GREGORY AJEMIAN, M.D. — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 3,987 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

3,987
Total Claims
$685K
Total Drug Cost
403
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,845
Total Day Supply
255,014
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$592K
Generic Drug Cost
$91K
Antibiotic Claims
114

Patient Demographics

Average Patient Age
74.9 years
Avg HCC Risk Score
1.37
Gender Split
43% female / 57% male
Age Distribution
<65: 27, 65-74: 183, 75-84: 132, 85+: 61

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Duloxetine Hcl
242
Atorvastatin Calcium
170
Jardiance
Empagliflozin
161
Metformin Hcl
150
Rosuvastatin Calcium
139
Famotidine
127
Losartan Potassium
120
Gabapentin
112
Levothyroxine Sodium
109
Montelukast Sodium
105

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How GREGORY AJEMIAN, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

GREGORY AJEMIAN, M.D.'s 3,987 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in New York

Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as AJEMIAN.

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GREGORY AJEMIAN, M.D.'s specialty?
GREGORY AJEMIAN, M.D. specializes in Internal Medicine Physician and practices in GARDEN CITY, New York. Credentials: M.D..
How much does GREGORY AJEMIAN, M.D. prescribe under Medicare Part D?
In 2023, GREGORY AJEMIAN, M.D. wrote 3,987 Medicare Part D claims totaling $685K in drug costs for 403 beneficiaries.
Where is GREGORY AJEMIAN, M.D. located?
GREGORY AJEMIAN, M.D. is located at 212 NASSAU BLVD, GARDEN CITY, NY, 11530. Phone: (516) 637-2265.
What is GREGORY AJEMIAN, M.D.'s NPI number?
GREGORY AJEMIAN, M.D.'s National Provider Identifier (NPI) is 1962407627, issued on 06/17/2005.
Does GREGORY AJEMIAN, M.D. prescribe more brand-name or generic drugs?
GREGORY AJEMIAN, M.D.'s prescribing is 17% brand-name and 83% generic drugs by claim count, with $592K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does GREGORY AJEMIAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GREGORY AJEMIAN, M.D.'s most frequently prescribed drugs include Duloxetine Hcl, Atorvastatin Calcium, Jardiance. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY AJEMIAN, M.D. accept Medicare?
GREGORY AJEMIAN, M.D. appears in CMS Medicare data with 3,987 Part D claims and 403 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY AJEMIAN, M.D.'s credentials?
GREGORY AJEMIAN, M.D.'s NPI is 1962407627 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology