2026 NPPES data Pharmacist NPI 1588949085 RPH
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GARY MCMAHAN, RPH

Pharmacist in HAMILTON, 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.

What the federal data shows

GARY MCMAHAN, RPH is a Pharmacist in HAMILTON, Ohio, listed in the federal CMS National Provider Identifier registry.

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.

What does the federal data show about GARY MCMAHAN, RPH?

Quality data not reported

NPI registry status

Active

Issued 10/15/2011

NPI 1588949085

Primary specialty

Pharmacist

High-volume

290,447 US NPIs in this specialty

Specialty distribution in Ohio

How Pharmacist compares to other specialties among Ohio providers

Ohio providers

Pharmacist share within Ohio

1. Pharmacist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pharmacist share within Ohio

Specialty board-certification context

Estimated specialty board-certified rate — Pharmacist (ABMS / AOA reference)

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

Est. board-certified rate (Pharmacist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pharmacist) — 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).

GARY MCMAHAN, RPH appears in the CMS NPPES registry as a Pharmacist provider holding RPH credentials at 335 ASHLEY BROOK DR, HAMILTON, OH, 45013, with a listed phone of (513) 896-1899. NPI 1588949085 was issued on 10/15/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MCMAHAN 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Pharmacist providers operate outside Part D entirely.

Pharmacist is a high-volume specialty nationwide, with 290,447 enrolled providers across 56 states and an average of 135 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

335 ASHLEY BROOK DR
HAMILTON, OH 45013

Provider Details

NPI 1588949085
Specialty Pharmacist
Credentials RPH
Gender Male
NPI Issued 10/15/2011

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 GARY MCMAHAN, RPH. To verify GARY MCMAHAN, RPH'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.

Pharmacist Overview

How GARY MCMAHAN, RPH fits within the Pharmacist landscape nationally.

290,447
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider

Nearby Pharmacist Providers in Ohio

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

Compare Pharmacist nationally: see state-by-state distribution →

Frequently Asked Questions

What is GARY MCMAHAN, RPH's specialty?
GARY MCMAHAN, RPH specializes in Pharmacist and practices in HAMILTON, Ohio. Credentials: RPH.
Where is GARY MCMAHAN, RPH located?
GARY MCMAHAN, RPH is located at 335 ASHLEY BROOK DR, HAMILTON, OH, 45013. Phone: (513) 896-1899.
What is GARY MCMAHAN, RPH's NPI number?
GARY MCMAHAN, RPH's National Provider Identifier (NPI) is 1588949085, issued on 10/15/2011.
How many Pharmacist providers are there in the US?
There are 290,447 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
Does GARY MCMAHAN, RPH accept Medicare?
GARY MCMAHAN, RPH appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GARY MCMAHAN, RPH's credentials?
GARY MCMAHAN, RPH's NPI is 1588949085 with credentials RPH. 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.
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