2026 NPPES data Internal Medicine Physician NPI 1902243942 MD
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AMIR AGHAJANIAN, MD

Internal Medicine Physician in CHAPEL HILL, North Carolina. 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 · 550 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: AMIR AGHAJANIAN, MD is a Internal Medicine Physician ([object Object]) practicing in CHAPEL HILL, North Carolina with a Medicare Part D prescribing footprint of 4K claims across 550 beneficiaries — 22% brand-name prescribing .

What stands out: AMIR AGHAJANIAN, MD filed 3,866 Medicare Part D claims in 2023 across CHAPEL HILL, North Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

AMIR AGHAJANIAN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

AMIR AGHAJANIAN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 05/31/2013

NPI 1902243942

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

3,866 42% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in North Carolina

How Internal Medicine Physician compares to other specialties among North Carolina providers

North Carolina providers

Internal Medicine Physician share within North Carolina

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

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).

AMIR AGHAJANIAN, MD is a Internal Medicine Physician provider practicing in CHAPEL HILL, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1902243942. 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.

AMIR AGHAJANIAN, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at UNC DIVISION OF CARDIOLOGY, CHAPEL HILL, NC, 27599, with a listed phone of (984) 974-2900. NPI 1902243942 was issued on 05/31/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AGHAJANIAN 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 3,866 prescription claims written by this provider, covering 550 Medicare beneficiaries and totaling roughly $697K in drug spend, split 22% brand-name and 78% 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

UNC DIVISION OF CARDIOLOGY
CHAPEL HILL, NC 27599

Provider Details

NPI 1902243942
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 05/31/2013

Hospital and facility affiliations

Facilities where AMIR AGHAJANIAN, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

UNC PHYSICIANS NETWORK LLC
SILER CITY, NC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

AMIR AGHAJANIAN, MD — brand share 22.0%
Specialty average (est.)

22% brand-name claims vs 78% generic, on 3,866 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.

3,866
Total Claims
$697K
Total Drug Cost
550
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,061
Total Day Supply
239,434
Brand vs Generic
22% brand / 78% generic
Brand Drug Cost
$643K
Generic Drug Cost
$54K

Patient Demographics

Average Patient Age
74.6 years
Avg HCC Risk Score
1.91
Gender Split
50% female / 50% male
Age Distribution
<65: 56, 65-74: 222, 75-84: 190, 85+: 82

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Metoprolol Succinate
565
Eliquis
Apixaban
440
Atorvastatin Calcium
357
Furosemide
312
Amlodipine Besylate
214
Isosorbide Mononitrate Er
Isosorbide Mononitrate
170
Losartan Potassium
159
Xarelto
Rivaroxaban
150
Lisinopril
134
Carvedilol
117

* 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 AMIR AGHAJANIAN, MD 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

AMIR AGHAJANIAN, MD's 3,866 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as AGHAJANIAN.

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

Frequently Asked Questions

What is AMIR AGHAJANIAN, MD's specialty?
AMIR AGHAJANIAN, MD specializes in Internal Medicine Physician and practices in CHAPEL HILL, North Carolina. Credentials: MD.
How much does AMIR AGHAJANIAN, MD prescribe under Medicare Part D?
In 2023, AMIR AGHAJANIAN, MD wrote 3,866 Medicare Part D claims totaling $697K in drug costs for 550 beneficiaries.
Where is AMIR AGHAJANIAN, MD located?
AMIR AGHAJANIAN, MD is located at UNC DIVISION OF CARDIOLOGY, CHAPEL HILL, NC, 27599. Phone: (984) 974-2900.
What is AMIR AGHAJANIAN, MD's NPI number?
AMIR AGHAJANIAN, MD's National Provider Identifier (NPI) is 1902243942, issued on 05/31/2013.
Does AMIR AGHAJANIAN, MD prescribe more brand-name or generic drugs?
AMIR AGHAJANIAN, MD's prescribing is 22% brand-name and 78% generic drugs by claim count, with $643K 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 AMIR AGHAJANIAN, MD prescribe most often?
Based on 2023 Medicare Part D data, AMIR AGHAJANIAN, MD's most frequently prescribed drugs include Metoprolol Succinate, Eliquis, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AMIR AGHAJANIAN, MD accept Medicare?
AMIR AGHAJANIAN, MD appears in CMS Medicare data with 3,866 Part D claims and 550 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AMIR AGHAJANIAN, MD's credentials?
AMIR AGHAJANIAN, MD's NPI is 1902243942 with credentials MD. 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