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2026 NPPES data Rheumatology Physician NPI 1942645403 M.D., M.H.S.
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Joshua Bilsborrow, M.D., M.H.S.

Rheumatology Physician in Hamden, Connecticut.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,377 in Rheumatology 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
167
Medicare Part D claims · 71 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.6/100
▼ 10 pts below national avg 83.5 · Mid-tier
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Joshua Bilsborrow, M.D., M.H.S. reported a CMS MIPS final score of 73.6/100 - below the 83.5 national average - and filed 167 Medicare Part D claims in 2024.

73.6/100
MIPS score · -10 vs avg
167
Part D claims, 2024
79%
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.

Federal trust snapshot

What official records show about Joshua Bilsborrow, M.D., M.H.S.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1942645403), first enumerated 05/09/2013.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 167 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 73.6/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1942645403 · Rheumatology Physician

NPI-10 · ENUM-MID · TAX-MID · MIPS-BELOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1942645403
  • ENUM-MID 2013
  • TAX-MID 6K Rheumatology Physician
  • MIPS-BELOW 73.6/100
  • RX-LIGHT 167
  • BOOK-THIN 125 in Connecticut
  • PHOTO-FINISH Corrie Broudy, MD · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Joshua Bilsborrow, M.D., M.H.S.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

74 ≥ 11th percentile 11% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Joshua Bilsborrow, M.D., M.H.S. sits

This provider among rheumatology physician peers

Across the 1,970 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Joshua Bilsborrow, M.D., M.H.S. writes more Part D claims than 5% of them and scores higher on MIPS quality than 13% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 67Joshua Bilsborrow, M.D., M.H.S., Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 13
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one rheumatology physician peer from a representative sample of 60; the gold marker is Joshua Bilsborrow, M.D., M.H.S.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Joshua Bilsborrow, M.D., M.H.S. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Joshua Bilsborrow, M.D., M.H.S.?

Below national average

NPI registry status

Active

Issued 05/09/2013

NPI 1942645403

Primary specialty

Rheumatology Physician

Mid-sized

6,377 US NPIs in this specialty

Medicare Part D claims

167 92% vs specialty avg

2024 prescription claims

Specialty avg: 2,058

MIPS final score

73.6/100 9.9 pts vs avg

Mid-tier band

vs 83.5 national avg

Specialty distribution in Connecticut

How Rheumatology Physician compares to other specialties among Connecticut providers

Connecticut providers
Clinical Social Worker8.4%Student in an Organized Heal…7.9%Physical Therapist4.2%Pharmacist3.9%Internal Medicine Physician3.4%Mental Health Counselor3.2%Rheumatology Physician0.1%
Largest specialties in Connecticut (% of in-state providers)

Medicare quality performance, MIPS

Joshua Bilsborrow, M.D., M.H.S.'s 2023 MIPS final score plotted against the Rheumatology Physician national average

Below national average
MIPS Final Score
73.6/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%73.6%
MIPS final score (Rheumatology Physician) - 73.6/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

3018 DIXWELL AVE
Hamden, CT 06518
(203) 281-5910

Provider Details

NPI 1942645403
Specialty Rheumatology Physician
Credentials M.D., M.H.S.
Gender Male
NPI Issued 05/09/2013

CMS Quality Score (MIPS)

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

73.5637
Final Score
Measured-score avg: 83.5
75.8435
Quality
51.4318
Cost
74
Promoting Interoperability

Reporting: Group practice

Brand vs generic prescribing mix · Typical

Joshua Bilsborrow, M.D., M.H.S. - brand share 21.0%
Rheumatology Physician average

21% brand-name claims vs 79% generic, on 167 2024 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 2024.

167
Total Claims
$193K
Total Drug Cost
71
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
383.267
Total Day Supply
11,357
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$189K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
72.3 years
Avg HCC Risk Score
1.91
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Joshua Bilsborrow, M.D., M.H.S. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Hydroxychloroquine Sulfate
 23
Methotrexate
Methotrexate Sodium
23
Prednisone
 23
Folic Acid
 12

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

More Rheumatology Physician in CT → All providers in Connecticut → Compare specialties →

Rheumatology Physician Overview

How Joshua Bilsborrow, M.D., M.H.S. fits within the Rheumatology Physician landscape nationally.

6,377
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,058
Avg Claims per Provider

Joshua Bilsborrow, M.D., M.H.S.'s 167 claims are below the specialty average of 2,058.

Nationwide Rheumatology Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Bilsborrow, both outside Connecticut so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (73.6 here).

Lisa Korn 73.6 CO Corrie Broudy 73.6 CA Zunera Tahir 73.6 CA Cheryl Wright 73.6 CA

Same NPPES enumeration year (2013)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Pieusha Malhotra Paramus, NJ Anthony Ocon Rochester, NY Atul Kapila Raleigh, NC Abrahim Syed Warrenville, IL

Nearby Rheumatology Physician Providers in Connecticut

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

One of 125 Rheumatology Physician providers enrolled in Connecticut, 5 are shown here.

Dr. Crispin Abarientos
M.D.
Middletown, CT
Dr. Aryeh Abeles
M.D.
Meriden, CT
Dr. Micha Abeles
M.D.
Meriden, CT
Jackilyn Annelli
PA
Norwich, CT
Dr. Sandra Apenteng
MD
Glastonbury, CT

Compare Rheumatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Joshua Bilsborrow, M.D., M.H.S.'s specialty? ▼
Joshua Bilsborrow, M.D., M.H.S. specializes in Rheumatology Physician and practices in Hamden, Connecticut. Credentials: M.D., M.H.S..
How much does Joshua Bilsborrow, M.D., M.H.S. prescribe under Medicare Part D? ▼
In 2024, Joshua Bilsborrow, M.D., M.H.S. wrote 167 Medicare Part D claims totaling $193K in drug costs for 71 beneficiaries.
What is Joshua Bilsborrow, M.D., M.H.S.'s Medicare quality score? ▼
Joshua Bilsborrow, M.D., M.H.S. has a CMS MIPS Final Score of 73.6/100 (Quality: 75.8, Cost: 51.4). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Joshua Bilsborrow, M.D., M.H.S. located? ▼
Joshua Bilsborrow, M.D., M.H.S. is located at 3018 DIXWELL AVE, Hamden, CT, 06518. Phone: (203) 281-5910.
What is Joshua Bilsborrow, M.D., M.H.S.'s NPI number? ▼
Joshua Bilsborrow, M.D., M.H.S.'s National Provider Identifier (NPI) is 1942645403, issued on 05/09/2013.
Does Joshua Bilsborrow, M.D., M.H.S. prescribe more brand-name or generic drugs? ▼
Joshua Bilsborrow, M.D., M.H.S.'s prescribing is 21% brand-name and 79% generic drugs by claim count, with $189K in brand drug costs.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,377 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,058 Medicare Part D claims per year.
What drugs does Joshua Bilsborrow, M.D., M.H.S. prescribe most often? ▼
Based on 2024 Medicare Part D data, Joshua Bilsborrow, M.D., M.H.S.'s most frequently prescribed drugs include Hydroxychloroquine Sulfate, Methotrexate, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joshua Bilsborrow, M.D., M.H.S. accept Medicare? ▼
Joshua Bilsborrow, M.D., M.H.S. appears in CMS Medicare data with 167 Part D claims and 71 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joshua Bilsborrow, M.D., M.H.S.'s credentials? ▼
Joshua Bilsborrow, M.D., M.H.S.'s NPI is 1942645403 with credentials M.D., M.H.S.. 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

View source datasets and methodology notes
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 (2024). 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 August 2026 (NPPES) / 2024 (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 editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.