2026 NPPES data Internal Medicine Physician NPI 1699157230 M.D.
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Neil Agarwal, M.D.

Internal Medicine Physician in Baltimore, Maryland. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
72
Medicare Part D claims · 19 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$16.89
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Neil Agarwal, M.D. filed 72 Medicare Part D claims in 2023 as a Internal Medicine Physician in Baltimore, Maryland, prescribing 78% generic.

72
Part D claims, 2023
78%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Neil Agarwal, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

72 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic, not verified)

Neil Agarwal, M.D. 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).

What does the federal data show about Neil Agarwal, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/19/2015

NPI 1699157230

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

72 97% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Maryland

How Internal Medicine Physician compares to other specialties among Maryland providers

Maryland providers

Largest specialties in Maryland (% of in-state providers)

Behavior Technician - 14.1%Behavior Technician14.1%Clinical Social Worker - 5.5%Clinical Social Worker5.5%Student in an Organized Health Care Education/Training Program - 4.5%Student in an Organized Health Care Education/Training Program4.5%Home Health Aide - 4.4%Home Health Aide4.4%Physical Therapist - 3.9%Physical Therapist3.9%Pharmacist - 3.6%Pharmacist3.6%Internal Medicine Physician - 2.8%Internal Medicine Physician2.8%
Largest specialties in Maryland (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:

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).

Neil Agarwal, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 22 S GREENE ST, Baltimore, MD, 21201, with a listed phone of (410) 328-5720. NPI 1699157230 was issued on 06/19/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Agarwal 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 72 prescription claims written by this provider, covering 19 Medicare beneficiaries and totaling roughly $25K 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

22 S GREENE ST
Baltimore, MD 21201

Provider Details

NPI 1699157230
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 06/19/2015

Hospital and facility affiliations

Facilities where Neil Agarwal, M.D. 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.

University OF Maryland Physicians PA
Baltimore, MD

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

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 Neil Agarwal, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$17

Largest payer

Travere Therapeutics, Inc.

Most common payment type

Education

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.

Brand vs generic prescribing mix · Typical

Neil Agarwal, M.D. - brand share 22.0%
Internal Medicine Physician average

22% brand-name claims vs 78% generic, on 72 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.

72
Total Claims
$25K
Total Drug Cost
19
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
186
Total Day Supply
5,580
Brand vs Generic
22% brand / 78% generic
Brand Drug Cost
$24K
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
71.5 years
Avg HCC Risk Score
1.71

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Calcitriol
16
Jardiance
Empagliflozin
11

* 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 Neil Agarwal, 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

Neil Agarwal, M.D.'s 72 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Maryland

Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Agarwal.

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Maryland medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Neil Agarwal, M.D.'s specialty?
Neil Agarwal, M.D. specializes in Internal Medicine Physician and practices in Baltimore, Maryland. Credentials: M.D..
How much does Neil Agarwal, M.D. prescribe under Medicare Part D?
In 2023, Neil Agarwal, M.D. wrote 72 Medicare Part D claims totaling $25K in drug costs for 19 beneficiaries.
Where is Neil Agarwal, M.D. located?
Neil Agarwal, M.D. is located at 22 S GREENE ST, Baltimore, MD, 21201. Phone: (410) 328-5720.
What is Neil Agarwal, M.D.'s NPI number?
Neil Agarwal, M.D.'s National Provider Identifier (NPI) is 1699157230, issued on 06/19/2015.
Does Neil Agarwal, M.D. prescribe more brand-name or generic drugs?
Neil Agarwal, M.D.'s prescribing is 22% brand-name and 78% generic drugs by claim count, with $24K 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 Neil Agarwal, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Neil Agarwal, M.D.'s most frequently prescribed drugs include Calcitriol, Jardiance. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Neil Agarwal, M.D. accept Medicare?
Neil Agarwal, M.D. appears in CMS Medicare data with 72 Part D claims and 19 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Neil Agarwal, M.D.'s credentials?
Neil Agarwal, M.D.'s NPI is 1699157230 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

Compiled from official public sources by the PlainDoctor editorial team.