2026 NPPES data Physician Assistant NPI 1518441963 PA-C
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Joseph Regan, PA-C

Physician Assistant in Oak Bluffs, Massachusetts. 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
410
Medicare Part D claims · 232 beneficiaries · Physician Assistant avg: 790
MIPS score
98.1/100
▲ 15 pts above national avg 83.1 · [object Object]

What the federal data shows

Joseph Regan, PA-C reported a CMS MIPS final score of 98.1/100 — above the 83.1 national average — and filed 410 Medicare Part D claims in 2023.

98.1/100
MIPS score · +15 vs avg
410
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.

Joseph Regan, PA-C's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

98 Top 11% higher than 89% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about Joseph Regan, PA-C?

High performer (top quartile)

NPI registry status

Active

Issued 09/21/2018

NPI 1518441963

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

410 48% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

98.1/100 15 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in Massachusetts

How Physician Assistant compares to other specialties among Massachusetts providers

Massachusetts providers

Physician Assistant share within Massachusetts

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

Medicare quality performance — MIPS

Joseph Regan, PA-C's 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
98.1/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 98.1/100 vs national avg 83.1

0%100%National avg83%98.1%
MIPS final score (Physician Assistant) — 98.1/100 vs national avg 83.1

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).

Joseph Regan, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 1 HOSPITAL RD, Oak Bluffs, MA, 02557, with a listed phone of (508) 693-0410. NPI 1518441963 was issued on 09/21/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Regan 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 410 prescription claims written by this provider, covering 232 Medicare beneficiaries and totaling roughly $27K in drug spend, with an opioid prescribing rate of 4.1%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.1/100 for the 2023 performance year (Quality 86.1), compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

1 HOSPITAL RD
Oak Bluffs, MA 02557

Provider Details

NPI 1518441963
Specialty Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 09/21/2018

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Joseph Regan, PA-C 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.

Martha's Vineyard Hospital Inc
★★★★☆ 4/5
Oak Bluffs, MA
Critical Access Hospitals
CMS CCN: 221300
Mainehealth
East Waterboro, ME
Upper Connecticut Valley Hospital Association
Colebrook, NH
Wentworth Douglass Physician Corporation
Dover, NH

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

License & disciplinary context — Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 — they are NOT specific to Joseph Regan, PA-C. To verify Joseph Regan, PA-C's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

410
Total Claims
$27K
Total Drug Cost
232
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
456
Total Day Supply
7,794
Generic Drug Cost
$6K
Opioid Claims
17 (4.1% rate)
Antibiotic Claims
149

Patient Demographics

Average Patient Age
74.8 years
Avg HCC Risk Score
1.33
Gender Split
59% female / 41% male
Age Distribution
<65: 30, 65-74: 68, 75-84: 89, 85+: 45

Top Prescribed Drugs (Medicare Part D)

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

What Joseph Regan, PA-C prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Prednisone
44
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
37
Azithromycin
19
Cephalexin
15
Omeprazole
13
Doxycycline Hyclate
12
Eliquis
Apixaban
12
Doxycycline Monohydrate
11

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

Physician Assistant Overview

How Joseph Regan, PA-C fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

Joseph Regan, PA-C's 410 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Massachusetts

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

Compare Physician Assistant 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 Massachusetts medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Physician Assistant 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 Joseph Regan, PA-C's specialty?
Joseph Regan, PA-C specializes in Physician Assistant and practices in Oak Bluffs, Massachusetts. Credentials: PA-C.
How much does Joseph Regan, PA-C prescribe under Medicare Part D?
In 2023, Joseph Regan, PA-C wrote 410 Medicare Part D claims totaling $27K in drug costs for 232 beneficiaries.
What is Joseph Regan, PA-C's Medicare quality score?
Joseph Regan, PA-C has a CMS MIPS Final Score of 98.1/100 (Quality: 86.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Joseph Regan, PA-C located?
Joseph Regan, PA-C is located at 1 HOSPITAL RD, Oak Bluffs, MA, 02557. Phone: (508) 693-0410.
What is Joseph Regan, PA-C's NPI number?
Joseph Regan, PA-C's National Provider Identifier (NPI) is 1518441963, issued on 09/21/2018.
Does Joseph Regan, PA-C prescribe opioids?
Yes, Joseph Regan, PA-C had 17 opioid claims in 2023 with an opioid prescribing rate of 4.1%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Joseph Regan, PA-C prescribe most often?
Based on 2023 Medicare Part D data, Joseph Regan, PA-C's most frequently prescribed drugs include Prednisone, Amoxicillin-Clavulanate Potass, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joseph Regan, PA-C accept Medicare?
Joseph Regan, PA-C appears in CMS Medicare data with 410 Part D claims and 232 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joseph Regan, PA-C's credentials?
Joseph Regan, PA-C's NPI is 1518441963 with credentials PA-C. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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