NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1689657231 M.D.
Verify on CMS → Richard Brown, M.D.
Rheumatology Physician in Greenfield, Massachusetts.
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
413
Medicare Part D claims · 72 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Richard Brown, M.D. filed 413 Medicare Part D claims in 2024 as a Rheumatology Physician in Greenfield, Massachusetts, prescribing 93% generic.
- 413
- Part D claims, 2024
- 93%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥61st
- 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 Richard Brown, M.D.
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 1689657231), first enumerated 11/28/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 413 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
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Richard Brown, M.D.'s individual license status. Verify directly with the state medical board.
Source: BORIM 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.
CMS NPPES provider registry desk
NPI 1689657231 · Rheumatology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1689657231
- ENUM-LEGACY 2005
- TAX-MID 6K Rheumatology Physician
- RX-LIGHT 413
- BOOK-THIN 262 in Massachusetts
- PHOTO-ENUM Joel Abbott, MD · 2005
Richard Brown, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
413 ≥ 61st percentile 61% 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 certification likely (heuristic, not verified)
Richard Brown, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Richard Brown, M.D.?
Quality data not reportedPrimary specialty
Rheumatology Physician
Medicare Part D claims
413 80% vs specialty avg
Specialty distribution in Massachusetts
How Rheumatology Physician compares to other specialties among Massachusetts 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 | 1689657231 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/28/2005 |
Hospital and facility affiliations
Facilities where Richard Brown, 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.
Valley Medical Group PC
Greenfield, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Richard Brown, M.D.. To verify Richard Brown, M.D.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Richard Brown, M.D. - brand share 7.0%
Rheumatology Physician average
7% brand-name claims vs 93% generic, on 413 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.
413
Total Claims
$110K
Total Drug Cost
72
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 591.8
- Total Day Supply
- 17,125
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $103K
- Generic Drug Cost
- $7K
- Opioid Claims
- 29 (7.0% rate)
Patient Demographics
- Average Patient Age
- 65.2 years
- Avg HCC Risk Score
- 1.15
- Age Distribution
- <65: 28, 65-74: 25, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Richard Brown, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Tizanidine Hcl
Tizanidine Hcl
49 claims
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
44 claims
- Prednisone
Prednisone
44 claims
- Pregabalin
Pregabalin
44 claims
- Tramadol Hcl
Tramadol Hcl
29 claims
- Gabapentin
Gabapentin
23 claims
- Baclofen 19
Baclofen
19 claims
- Meloxicam 16
Meloxicam
16 claims
| Drug | Claims |
|---|---|
| Tizanidine Hcl | 49 |
| Cyclobenzaprine Hcl | 44 |
| Prednisone | 44 |
| Pregabalin | 44 |
| Tramadol Hcl | 29 |
| Gabapentin | 23 |
| Baclofen | 19 |
| Meloxicam | 16 |
| Amitriptyline Hcl | 13 |
| Desipramine Hcl | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Richard Brown, M.D. 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
Richard Brown, M.D.'s 413 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 Brown, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Rheumatology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Brown.
One of 262 Rheumatology Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Maria Abruzzo
M.D.
Gardner, MA
Dr. Munir Ahmad
M.D.
Palmer, MA
Dr. Syed Ahmed
M.D.
Boston, MA
Dr. Ghousia Alikhan
M.D.
Holyoke, MA
Dr. Antonios Aliprantis
M.D.
Chestnut Hill, MA
Compare Rheumatology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Richard Brown, M.D.'s specialty? ▼
Richard Brown, M.D. specializes in Rheumatology Physician and practices in Greenfield, Massachusetts. Credentials: M.D..
How much does Richard Brown, M.D. prescribe under Medicare Part D? ▼
In 2024, Richard Brown, M.D. wrote 413 Medicare Part D claims totaling $110K in drug costs for 72 beneficiaries.
Where is Richard Brown, M.D. located? ▼
Richard Brown, M.D. is located at 329 CONWAY ST, Greenfield, MA, 01301. Phone: (413) 774-6301.
What is Richard Brown, M.D.'s NPI number? ▼
Richard Brown, M.D.'s National Provider Identifier (NPI) is 1689657231, issued on 11/28/2005.
Does Richard Brown, M.D. prescribe more brand-name or generic drugs? ▼
Richard Brown, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $103K in brand drug costs.
Does Richard Brown, M.D. prescribe opioids? ▼
Yes, Richard Brown, M.D. had 29 opioid claims in 2024 with an opioid prescribing rate of 7.0%.
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.
What drugs does Richard Brown, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Richard Brown, M.D.'s most frequently prescribed drugs include Tizanidine Hcl, Cyclobenzaprine Hcl, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Richard Brown, M.D. accept Medicare? ▼
Richard Brown, M.D. appears in CMS Medicare data with 413 Part D claims and 72 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Richard Brown, M.D.'s credentials? ▼
Richard Brown, M.D.'s NPI is 1689657231 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
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.