NPI registry status
Active
2026 NPPES data Occupational Medicine Physician NPI 1851509236 MD
Verify on CMS → Gary Massad, MD
Occupational Medicine Physician in Oklahoma City, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,230 in Occupational Medicine 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
20
Medicare Part D claims · Occupational Medicine Physician avg: 605
Industry payments
$266.23
7 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gary Massad, MD filed 20 Medicare Part D claims in 2023 as a Occupational Medicine Physician in Oklahoma City, Oklahoma.
- 20
- Part D claims, 2023
- $266.23
- industry payments (Sunshine Act)
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.
Gary Massad, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
20 0th percentile higher than 0% of 1,370,886 prescribers
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)
Gary Massad, MD 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 Gary Massad, MD?
Quality data not reportedPrimary specialty
Occupational Medicine Physician
Medicare Part D claims
20 97% vs specialty avg
Specialty distribution in Oklahoma
How Occupational Medicine Physician compares to other specialties among Oklahoma providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Occupational Medicine Physician. Verify directly:
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).
Gary Massad, MD appears in the CMS NPPES registry as a Occupational Medicine Physician provider holding MD credentials at 7501 N COUNTRY CLUB DRIVE, Oklahoma City, OK, 73116, with a listed phone of (405) 843-3193. NPI 1851509236 was issued on 05/18/2007.
Medicare Part D records for calendar year 2023 show 20 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $4K in drug spend.
Occupational Medicine Physician is a narrow specialty nationwide, with 2,230 enrolled providers across 52 states and an average of 605 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
Provider Details
| NPI | 1851509236 |
|---|---|
| Specialty | Occupational Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/18/2007 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Gary Massad, MD. Source: openpaymentsdata.cms.gov.
Total received
$266
Largest payer
Supernus Pharmaceuticals, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
20
Total Claims
$4K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 38
- Total Day Supply
- 1,049
- Generic Drug Cost
- $974
Patient Demographics
- Average Patient Age
- 67.4 years
- Avg HCC Risk Score
- 1.11
Occupational Medicine Physician Overview
How Gary Massad, MD fits within the Occupational Medicine Physician landscape nationally.
2,230
Occupational Medicine Physician Providers in US
52
States with Occupational Medicine Physician
605
Avg Claims per Provider
Gary Massad, MD's 20 claims are below the specialty average of 605.
Nearby Occupational Medicine Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Massad.
Dr. Jerrold Benedict
M.D.
Tulsa, OK
Dr. Randel Estep
DO
Oklahoma City, OK
Dr. William Gillock
M.D.
Tulsa, OK
Dr. John Hallford
M.D.
Tulsa, OK
Dr. Matthew Hamm
MD, MPH
Edmond, OK
Compare Occupational Medicine Physician 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 Oklahoma medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Occupational Medicine Physician 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.
Healthcare Guides
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How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Oklahoma
Frequently Asked Questions
What is Gary Massad, MD's specialty? ▼
Gary Massad, MD specializes in Occupational Medicine Physician and practices in Oklahoma City, Oklahoma. Credentials: MD.
How much does Gary Massad, MD prescribe under Medicare Part D? ▼
In 2023, Gary Massad, MD wrote 20 Medicare Part D claims totaling $4K in drug costs for N/A beneficiaries.
Where is Gary Massad, MD located? ▼
Gary Massad, MD is located at 7501 N COUNTRY CLUB DRIVE, Oklahoma City, OK, 73116. Phone: (405) 843-3193.
What is Gary Massad, MD's NPI number? ▼
Gary Massad, MD's National Provider Identifier (NPI) is 1851509236, issued on 05/18/2007.
How many Occupational Medicine Physician providers are there in the US? ▼
There are 2,230 Occupational Medicine Physician providers across 52 states in the US. The average Occupational Medicine Physician provider writes 605 Medicare Part D claims per year.
Does Gary Massad, MD accept Medicare? ▼
Gary Massad, MD appears in CMS Medicare data with 20 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gary Massad, MD's credentials? ▼
Gary Massad, MD's NPI is 1851509236 with credentials MD. 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 (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
Compiled from official public sources by the PlainDoctor editorial team.