2026 NPPES data Therapeutic Radiology Physician NPI 1083612709 M.D.
Verify on CMS →

BRUCE MERWIN, M.D.

Therapeutic Radiology Physician in GAHANNA, Ohio. 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
14
Medicare Part D claims · 12 beneficiaries · Therapeutic Radiology Physician avg: 138

What the federal data shows

BRUCE MERWIN, M.D. filed 14 Medicare Part D claims in 2023 as a Therapeutic Radiology Physician in GAHANNA, Ohio.

14
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.

BRUCE MERWIN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

14 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. 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

Board-eligible specialty (heuristic — not verified)

BRUCE MERWIN, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about BRUCE MERWIN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/07/2005

NPI 1083612709

Primary specialty

Therapeutic Radiology Physician

Rare

303 US NPIs in this specialty

Medicare Part D claims

14 90% vs specialty avg

2023 prescription claims

Specialty avg: 138

Specialty distribution in Ohio

How Therapeutic Radiology Physician compares to other specialties among Ohio providers

Ohio providers

Therapeutic Radiology Physician share within Ohio

1. Therapeutic Radiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Therapeutic Radiology Physician share within Ohio

Specialty board-certification context

Estimated specialty board-certified rate — Therapeutic Radiology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Therapeutic Radiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Therapeutic Radiology 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).

BRUCE MERWIN, M.D. appears in the CMS NPPES registry as a Therapeutic Radiology Physician provider holding M.D. credentials at 620B MORRISON RD, GAHANNA, OH, 43230, with a listed phone of (614) 944-4770. NPI 1083612709 was issued on 07/07/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MERWIN 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 14 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $266 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.

Therapeutic Radiology Physician is a narrow specialty nationwide, with 303 enrolled providers across 42 states and an average of 138 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

620B MORRISON RD
GAHANNA, OH 43230

Provider Details

NPI 1083612709
Specialty Therapeutic Radiology Physician
Credentials M.D.
Gender Male
NPI Issued 07/07/2005

License & disciplinary context — Ohio OMB 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 ~48K Ohio medical licensees in 2023 — they are NOT specific to BRUCE MERWIN, M.D.. To verify BRUCE MERWIN, M.D.'s current license status, search the OMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

158
Total board actions, Ohio 2023
Across 154 cases
3.29
Actions per 1,000 licensees
Ohio statewide rate
probation
Most common action type
56 cases

OMB 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 Ohio 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.

14
Total Claims
$266
Total Drug Cost
12
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16
Total Day Supply
298

Patient Demographics

Average Patient Age
68.5 years
Avg HCC Risk Score
1.63

Therapeutic Radiology Physician Overview

How BRUCE MERWIN, M.D. fits within the Therapeutic Radiology Physician landscape nationally.

303
Therapeutic Radiology Physician Providers in US
42
States with Therapeutic Radiology Physician
138
Avg Claims per Provider

BRUCE MERWIN, M.D.'s 14 claims are below the specialty average of 138.

Nearby Therapeutic Radiology Physician Providers in Ohio

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

Compare Therapeutic Radiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is BRUCE MERWIN, M.D.'s specialty?
BRUCE MERWIN, M.D. specializes in Therapeutic Radiology Physician and practices in GAHANNA, Ohio. Credentials: M.D..
How much does BRUCE MERWIN, M.D. prescribe under Medicare Part D?
In 2023, BRUCE MERWIN, M.D. wrote 14 Medicare Part D claims totaling $266 in drug costs for 12 beneficiaries.
Where is BRUCE MERWIN, M.D. located?
BRUCE MERWIN, M.D. is located at 620B MORRISON RD, GAHANNA, OH, 43230. Phone: (614) 944-4770.
What is BRUCE MERWIN, M.D.'s NPI number?
BRUCE MERWIN, M.D.'s National Provider Identifier (NPI) is 1083612709, issued on 07/07/2005.
How many Therapeutic Radiology Physician providers are there in the US?
There are 303 Therapeutic Radiology Physician providers across 42 states in the US. The average Therapeutic Radiology Physician provider writes 138 Medicare Part D claims per year.
Does BRUCE MERWIN, M.D. accept Medicare?
BRUCE MERWIN, M.D. appears in CMS Medicare data with 14 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BRUCE MERWIN, M.D.'s credentials?
BRUCE MERWIN, M.D.'s NPI is 1083612709 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