2026 NPPES data Medical Physician Assistant NPI 1861672990 P.A.
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BILLY BROWN, P.A.

Medical Physician Assistant in CLARKSDALE, Mississippi. 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 · 47 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: BILLY BROWN, P.A. is a Medical Physician Assistant ([object Object]) practicing in CLARKSDALE, Mississippi with a Medicare Part D prescribing footprint of 1K claims across 47 beneficiaries — 2% brand-name prescribing .

What stands out: BILLY BROWN, P.A. filed 1,224 Medicare Part D claims in 2023 across CLARKSDALE, Mississippi. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

BILLY BROWN, P.A. at a glance

Quality data not reported

NPI registry status

Active

Issued 11/06/2007

NPI 1861672990

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

1,224 14% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Mississippi

How Medical Physician Assistant compares to other specialties among Mississippi providers

Mississippi providers

Medical Physician Assistant share within Mississippi

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Mississippi

Specialty board-certification context

Estimated specialty board-certified rate — Medical Physician Assistant (ABMS / AOA reference)

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

Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Physician Assistant) — 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).

BILLY BROWN, P.A. is a Medical Physician Assistant provider practicing in CLARKSDALE, Mississippi, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: P.A.. NPI: 1861672990. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

BILLY BROWN, P.A. appears in the CMS NPPES registry as a Medical Physician Assistant provider holding P.A. credentials at 510 HIGHWAY 322, CLARKSDALE, MS, 38614, with a listed phone of (662) 624-4292. NPI 1861672990 was issued on 11/06/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BROWN 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 1,224 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $112K in drug spend, split 2% brand-name and 98% generic by claim count, with an opioid prescribing rate of 27.7%. 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.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

510 HIGHWAY 322
CLARKSDALE, MS 38614

Provider Details

NPI 1861672990
Specialty Medical Physician Assistant
Credentials P.A.
Gender Male
NPI Issued 11/06/2007

Brand vs generic prescribing mix · Generic-heavy

BILLY BROWN, P.A. — brand share 2.0%
Specialty average (est.)

2% brand-name claims vs 98% generic, on 1,224 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.

1,224
Total Claims
$112K
Total Drug Cost
47
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,248
Total Day Supply
34,744
Brand vs Generic
2% brand / 98% generic
Brand Drug Cost
$3K
Generic Drug Cost
$110K
Opioid Claims
339 (27.7% rate)

Patient Demographics

Average Patient Age
59.9 years
Avg HCC Risk Score
1.34
Gender Split
55% female / 45% male
Age Distribution
<65: 27, 65-74: 17, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Oxycodone Hcl
243
Gabapentin
156
Naloxone Hcl
140
Tizanidine Hcl
113
Meloxicam
102
Cyclobenzaprine Hcl
89
Oxymorphone Hcl Er
Oxymorphone Hcl
53
Omeprazole
49
Pregabalin
44
Diclofenac Sodium
35

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

Medical Physician Assistant Overview

How BILLY BROWN, P.A. fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

BILLY BROWN, P.A.'s 1,224 claims are above the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Mississippi

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

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is BILLY BROWN, P.A.'s specialty?
BILLY BROWN, P.A. specializes in Medical Physician Assistant and practices in CLARKSDALE, Mississippi. Credentials: P.A..
How much does BILLY BROWN, P.A. prescribe under Medicare Part D?
In 2023, BILLY BROWN, P.A. wrote 1,224 Medicare Part D claims totaling $112K in drug costs for 47 beneficiaries.
Where is BILLY BROWN, P.A. located?
BILLY BROWN, P.A. is located at 510 HIGHWAY 322, CLARKSDALE, MS, 38614. Phone: (662) 624-4292.
What is BILLY BROWN, P.A.'s NPI number?
BILLY BROWN, P.A.'s National Provider Identifier (NPI) is 1861672990, issued on 11/06/2007.
Does BILLY BROWN, P.A. prescribe more brand-name or generic drugs?
BILLY BROWN, P.A.'s prescribing is 2% brand-name and 98% generic drugs by claim count, with $3K in brand drug costs.
Does BILLY BROWN, P.A. prescribe opioids?
Yes, BILLY BROWN, P.A. had 339 opioid claims in 2023 with an opioid prescribing rate of 27.7%.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does BILLY BROWN, P.A. prescribe most often?
Based on 2023 Medicare Part D data, BILLY BROWN, P.A.'s most frequently prescribed drugs include Oxycodone Hcl, Gabapentin, Naloxone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BILLY BROWN, P.A. accept Medicare?
BILLY BROWN, P.A. appears in CMS Medicare data with 1,224 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BILLY BROWN, P.A.'s credentials?
BILLY BROWN, P.A.'s NPI is 1861672990 with credentials P.A.. 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.
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