2026 NPPES data Rheumatology Physician NPI 1730167545 M.D.
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DONALD THOMAS, M.D.

Rheumatology Physician in GREENBELT, Maryland. 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
1K
Medicare Part D claims · 137 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
88.9953/100
▲ 6 pts above national avg 83.1 · [object Object]
Industry payments
$59.3K
104 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DONALD THOMAS, M.D. reported a CMS MIPS final score of 88.9953/100 — above the 83.1 national average — and filed 1,236 Medicare Part D claims in 2023.

88.9953/100
MIPS score · +6 vs avg
1K
Part D claims, 2023
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.

DONALD THOMAS, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

89 Top 44% higher than 56% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

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

Board certification likely (heuristic — not verified)

DONALD THOMAS, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — 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 DONALD THOMAS, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 01/03/2006

NPI 1730167545

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

1,236 40% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

MIPS final score

88.9953/100 5.895300000000006% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Maryland

How Rheumatology Physician compares to other specialties among Maryland providers

Maryland providers

Rheumatology Physician share within Maryland

1. Rheumatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Rheumatology Physician share within Maryland

Medicare quality performance — MIPS

DONALD THOMAS, M.D.'s 2023 MIPS final score plotted against the Rheumatology Physician national average

High performer (top quartile)
MIPS Final Score
88.9953/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Rheumatology Physician) — 88.9953/100 vs national avg 83.1

0%100%National avg83%89%
MIPS final score (Rheumatology Physician) — 88.9953/100 vs national avg 83.1

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).

DONALD THOMAS, M.D. appears in the CMS NPPES registry as a Rheumatology Physician provider holding M.D. credentials at 7300 HANOVER DR, GREENBELT, MD, 20770, with a listed phone of (301) 345-5600. NPI 1730167545 was issued on 01/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what THOMAS 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 1,236 prescription claims written by this provider, covering 137 Medicare beneficiaries and totaling roughly $1.4 million in drug spend, split 21% brand-name and 79% generic by claim count, with an opioid prescribing rate of 7.5%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 88.9953/100 for the 2023 performance year (Quality 84.4127, Cost 80.5715), compared with the national average of 83.1.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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

7300 HANOVER DR
GREENBELT, MD 20770

Provider Details

NPI 1730167545
Specialty Rheumatology Physician
Credentials M.D.
Gender Male
NPI Issued 01/03/2006

CMS Quality Score (MIPS)

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

88.9953
Final Score
Avg: 83.1
84.4127
Quality
80.5715
Cost
98
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where DONALD THOMAS, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

ARTHRITIS AND PAIN ASSOCIATES OF PRINCE GEORGES COUNTY PC
GREENBELT, MD

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 DONALD THOMAS, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$59.3K

Largest payer

GlaxoSmithKline, LLC.

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.

Brand vs generic prescribing mix · Typical

DONALD THOMAS, M.D. — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 1,236 2023 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 2023.

1,236
Total Claims
$1.4M
Total Drug Cost
137
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,484
Total Day Supply
72,257
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$1.3M
Generic Drug Cost
$54K
Opioid Claims
93 (7.5% rate)
Antibiotic Claims
14

Patient Demographics

Average Patient Age
73.5 years
Avg HCC Risk Score
1.60
Gender Split
82% female / 18% male
Age Distribution
<65: 20, 65-74: 47, 75-84: 53, 85+: 17

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What DONALD THOMAS, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydroxychloroquine Sulfate
188
Methotrexate
Methotrexate Sodium
89
Tramadol Hcl
83
Leucovorin Calcium
81
Rinvoq
Upadacitinib
50
Prednisone
45
Methylprednisolone
39
Duloxetine Hcl
37
Cyclobenzaprine Hcl
36
Benlysta
Belimumab
32

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

Rheumatology Physician Overview

How DONALD THOMAS, M.D. fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

DONALD THOMAS, M.D.'s 1,236 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Maryland

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

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

Frequently Asked Questions

What is DONALD THOMAS, M.D.'s specialty?
DONALD THOMAS, M.D. specializes in Rheumatology Physician and practices in GREENBELT, Maryland. Credentials: M.D..
How much does DONALD THOMAS, M.D. prescribe under Medicare Part D?
In 2023, DONALD THOMAS, M.D. wrote 1,236 Medicare Part D claims totaling $1.4M in drug costs for 137 beneficiaries.
What is DONALD THOMAS, M.D.'s Medicare quality score?
DONALD THOMAS, M.D. has a CMS MIPS Final Score of 88.9953/100 (Quality: 84.4127, Cost: 80.5715). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is DONALD THOMAS, M.D. located?
DONALD THOMAS, M.D. is located at 7300 HANOVER DR, GREENBELT, MD, 20770. Phone: (301) 345-5600.
What is DONALD THOMAS, M.D.'s NPI number?
DONALD THOMAS, M.D.'s National Provider Identifier (NPI) is 1730167545, issued on 01/03/2006.
Does DONALD THOMAS, M.D. prescribe more brand-name or generic drugs?
DONALD THOMAS, M.D.'s prescribing is 21% brand-name and 79% generic drugs by claim count, with $1.3M in brand drug costs.
Does DONALD THOMAS, M.D. prescribe opioids?
Yes, DONALD THOMAS, M.D. had 93 opioid claims in 2023 with an opioid prescribing rate of 7.5%.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does DONALD THOMAS, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DONALD THOMAS, M.D.'s most frequently prescribed drugs include Hydroxychloroquine Sulfate, Methotrexate, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DONALD THOMAS, M.D. accept Medicare?
DONALD THOMAS, M.D. appears in CMS Medicare data with 1,236 Part D claims and 137 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DONALD THOMAS, M.D.'s credentials?
DONALD THOMAS, M.D.'s NPI is 1730167545 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.
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 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