2026 NPPES data Medical Physician Assistant NPI 1700420957 PA
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JOHN BRITTON, PA

Medical Physician Assistant in BALTIMORE, Maryland. 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
237
Medicare Part D claims · 52 beneficiaries · Medical Physician Assistant avg: 1K

What the federal data shows

JOHN BRITTON, PA filed 237 Medicare Part D claims in 2023 as a Medical Physician Assistant in BALTIMORE, Maryland.

237
Part D claims, 2023

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.

JOHN BRITTON, PA's Medicare Part D volume vs every U.S. prescriber

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

237 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 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. 2,000–2,200: 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

What does the federal data show about JOHN BRITTON, PA?

Quality data not reported

NPI registry status

Active

Issued 10/31/2019

NPI 1700420957

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

237 78% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Maryland

How Medical Physician Assistant compares to other specialties among Maryland providers

Maryland providers

Medical Physician Assistant share within Maryland

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Medical Physician Assistant (ABMS / AOA reference)

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

Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Physician Assistant) — 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).

JOHN BRITTON, PA is a Medical Physician Assistant provider practicing in BALTIMORE, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA. NPI: 1700420957. 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.

JOHN BRITTON, PA appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA credentials at 22 S GREENE ST, BALTIMORE, MD, 21201, with a listed phone of (410) 328-8141. NPI 1700420957 was issued on 10/31/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BRITTON 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 237 prescription claims written by this provider, covering 52 Medicare beneficiaries and totaling roughly $23K in drug spend. 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.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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 1700420957
Specialty Medical Physician Assistant
Credentials PA
Gender Male
NPI Issued 10/31/2019

Hospital and facility affiliations

Facilities where JOHN BRITTON, PA 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.

EMERGENCY MEDICINE ASSOCIATES P.A., P.C.
PRINCE FREDERICK, MD
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).

Medicare Part D Prescribing Data

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

237
Total Claims
$23K
Total Drug Cost
52
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
267
Total Day Supply
7,158
Generic Drug Cost
$8K
Antibiotic Claims
21

Patient Demographics

Average Patient Age
63.7 years
Avg HCC Risk Score
4.47
Gender Split
52% female / 48% male
Age Distribution
<65: 23, 65-74: 22, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amlodipine Besylate
13
Metoprolol Succinate
13
Nifedipine Er
Nifedipine
12

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

Medical Physician Assistant Overview

How JOHN BRITTON, PA fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

JOHN BRITTON, PA's 237 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Maryland

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

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN BRITTON, PA's specialty?
JOHN BRITTON, PA specializes in Medical Physician Assistant and practices in BALTIMORE, Maryland. Credentials: PA.
How much does JOHN BRITTON, PA prescribe under Medicare Part D?
In 2023, JOHN BRITTON, PA wrote 237 Medicare Part D claims totaling $23K in drug costs for 52 beneficiaries.
Where is JOHN BRITTON, PA located?
JOHN BRITTON, PA is located at 22 S GREENE ST, BALTIMORE, MD, 21201. Phone: (410) 328-8141.
What is JOHN BRITTON, PA's NPI number?
JOHN BRITTON, PA's National Provider Identifier (NPI) is 1700420957, issued on 10/31/2019.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does JOHN BRITTON, PA prescribe most often?
Based on 2023 Medicare Part D data, JOHN BRITTON, PA's most frequently prescribed drugs include Amlodipine Besylate, Metoprolol Succinate, Nifedipine Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN BRITTON, PA accept Medicare?
JOHN BRITTON, PA appears in CMS Medicare data with 237 Part D claims and 52 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN BRITTON, PA's credentials?
JOHN BRITTON, PA's NPI is 1700420957 with credentials PA. 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