NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1912585258 MD
Verify on CMS → Cary Roy, MD
Rheumatology Physician in Dallas, Texas.
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
127
Medicare Part D claims · 21 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$111.98
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Cary Roy, MD filed 127 Medicare Part D claims in 2024 as a Rheumatology Physician in Dallas, Texas, prescribing 87% generic.
- 127
- Part D claims, 2024
- 87%
- generic prescribing
- $111.98
- industry payments (Sunshine Act)
- ≥34th
- pct by Part D claim volume (lower-bound band)
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 Cary Roy, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1912585258), first enumerated 03/30/2021.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 127 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$111.98 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Cary Roy, MD's individual license status. Verify directly with the state medical board.
Source: TMB annual report 2023
- 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.
Compare Roy with other Rheumatology Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Texas
- Dr. Michael Abel, MD Fredericksburg, TX
- Dr. Tareq Abou-Khamis, M.D. Houston, TX
- Dr. Robert Abresch, M.D. El Paso, TX
- Dr. Sampada Acharya, MD Fort Worth, TX
- Dr. Waffiyah Afridi, M.D. Farmers Branch, TX
- Dr. Zeeshan Afzal, M.D. El Paso, TX
Other specialties in Dallas: Student in an Organized Health Care Education/Training Program (5,087) · Anesthesiology Physician (1,187) · Professional Counselor (1,177) · Internal Medicine Physician (1,163)
CMS NPPES provider registry desk
NPI 1912585258 · Rheumatology Physician
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1912585258
- ENUM-RECENT 2021
- TAX-MID 6K Rheumatology Physician
- RX-LIGHT 127
- BOOK-THIN 417 in Texas
- PHOTO-ENUM Ala Mohamad Awad Al-… · 2021
Cary Roy, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
127 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Cary Roy, 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 Cary Roy, MD?
Quality data not reportedPrimary specialty
Rheumatology Physician
Medicare Part D claims
127 94% vs specialty avg
Specialty distribution in Texas
How Rheumatology Physician compares to other specialties among Texas 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 Rheumatology 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).
Practice Address
Provider Details
| NPI | 1912585258 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/30/2021 |
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 Cary Roy, MD. Source: openpaymentsdata.cms.gov.
Total received
$112
Largest payer
Amgen 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.
License & disciplinary context - Texas TMB 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 ~77K Texas medical licensees in 2023 - they are NOT specific to Cary Roy, MD. To verify Cary Roy, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Cary Roy, MD - brand share 13.0%
Rheumatology Physician average
13% brand-name claims vs 87% generic, on 127 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.
127
Total Claims
$33K
Total Drug Cost
21
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 227.4
- Total Day Supply
- 6,628
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $32K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 71.7 years
- Avg HCC Risk Score
- 2.06
Rheumatology Physician Overview
How Cary Roy, MD 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
Cary Roy, MD's 127 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 Roy, both outside Texas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2021)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Rheumatology Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Roy.
One of 417 Rheumatology Physician providers enrolled in Texas, 11 are shown on this page.
Dr. Martha Aguilar
M.D.
Houston, TX
Dr. Syed Alam
MD
Houston, TX
Dr. Ann Aleman Weinmann
MD
Corpus Christi, TX
Dr. Hiba Ali
MD
Pasadena, TX
Dr. Sadiq Ali
M.D.
Beaumont, TX
Compare Rheumatology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Cary Roy, MD's specialty? ▼
Cary Roy, MD specializes in Rheumatology Physician and practices in Dallas, Texas. Credentials: MD.
How much does Cary Roy, MD prescribe under Medicare Part D? ▼
In 2024, Cary Roy, MD wrote 127 Medicare Part D claims totaling $33K in drug costs for 21 beneficiaries.
Where is Cary Roy, MD located? ▼
Cary Roy, MD is located at 8144 WALNUT HILL LN STE 800, Dallas, TX, 75231. Phone: (214) 540-0700.
What is Cary Roy, MD's NPI number? ▼
Cary Roy, MD's National Provider Identifier (NPI) is 1912585258, issued on 03/30/2021.
Does Cary Roy, MD prescribe more brand-name or generic drugs? ▼
Cary Roy, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $32K 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.
Does Cary Roy, MD accept Medicare? ▼
Cary Roy, MD appears in CMS Medicare data with 127 Part D claims and 21 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cary Roy, MD's credentials? ▼
Cary Roy, MD's NPI is 1912585258 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 (2024). 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 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
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.