2026 NPPES data Ophthalmology Physician NPI 1467457804 M.D.
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THOMAS BROWNING, M.D.

Ophthalmology Physician in HARRIMAN, Tennessee. 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
2K
Medicare Part D claims · 611 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
58%
generic claims · 42% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.6104/100
▲ 14 pts above national avg 83.1 · [object Object]
Industry payments
$178.42
8 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: THOMAS BROWNING, M.D. is a Ophthalmology Physician ([object Object]) practicing in HARRIMAN, Tennessee with a Medicare Part D prescribing footprint of 2K claims across 611 beneficiaries — 42% brand-name prescribing . Their CMS MIPS Final Score of 96.6104/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $178.42 across 8 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: THOMAS BROWNING, M.D. reported a CMS MIPS final score of 96.6104 out of 100, above the 83.1 national average, and filed 1,554 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

THOMAS BROWNING, 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).

THOMAS BROWNING, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/14/2005

NPI 1467457804

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,554 9% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

96.6104/100 13.510400000000004% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Tennessee

How Ophthalmology Physician compares to other specialties among Tennessee providers

Tennessee providers

Ophthalmology Physician share within Tennessee

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

Medicare quality performance — MIPS

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

High performer (top quartile)
MIPS Final Score
96.6104/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 96.6104/100 vs national avg 83.1

0%100%National avg83%96.6%
MIPS final score (Ophthalmology Physician) — 96.6104/100 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).

THOMAS BROWNING, M.D. is a Ophthalmology Physician provider practicing in HARRIMAN, Tennessee, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1467457804. 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.

THOMAS BROWNING, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 1798 ROANE STATE HIGHWAY, HARRIMAN, TN, 37748, with a listed phone of (865) 882-7470. NPI 1467457804 was issued on 06/14/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BROWNING 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 1,554 prescription claims written by this provider, covering 611 Medicare beneficiaries and totaling roughly $124K in drug spend, split 42% brand-name and 58% generic by claim count. 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 96.6104/100 for the 2023 performance year (Quality 100, Cost 88.7013), compared with the national average of 83.1.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

1798 ROANE STATE HIGHWAY
HARRIMAN, TN 37748

Provider Details

NPI 1467457804
Specialty Ophthalmology Physician
Credentials M.D.
Gender Male
NPI Issued 06/14/2005

CMS Quality Score (MIPS)

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

96.6104
Final Score
Avg: 83.1
100
Quality
88.7013
Cost

Reporting: Group practice

Hospital and facility affiliations

Facilities where THOMAS BROWNING, 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.

SUMMIT MEDICAL GROUP, PLLC
HARRIMAN, TN

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

Total received

$178

Largest payer

Mallinckrodt Hospital Products 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.

Brand vs generic prescribing mix · Above average

THOMAS BROWNING, M.D. — brand share 42.0%
Specialty average (est.)

42% brand-name claims vs 58% generic, on 1,554 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.

1,554
Total Claims
$124K
Total Drug Cost
611
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,491
Total Day Supply
67,652
Brand vs Generic
42% brand / 58% generic
Brand Drug Cost
$97K
Generic Drug Cost
$27K
Antibiotic Claims
55

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
1.29
Gender Split
58% female / 42% male
Age Distribution
<65: 43, 65-74: 252, 75-84: 255, 85+: 61

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Latanoprost
386
Prednisolone Acetate
354
Brimonidine Tartrate
166
Timolol Maleate
125
Tobramycin-Dexamethasone
Tobramycin/Dexamethasone
106
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
62
Dorzolamide Hcl
39
Doxycycline Hyclate
36
Lumigan
Bimatoprost
30
Combigan
Brimonidine Tartrate/Timolol
26

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

Ophthalmology Physician Overview

How THOMAS BROWNING, M.D. fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

THOMAS BROWNING, M.D.'s 1,554 claims are above the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Tennessee

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

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

Frequently Asked Questions

What is THOMAS BROWNING, M.D.'s specialty?
THOMAS BROWNING, M.D. specializes in Ophthalmology Physician and practices in HARRIMAN, Tennessee. Credentials: M.D..
How much does THOMAS BROWNING, M.D. prescribe under Medicare Part D?
In 2023, THOMAS BROWNING, M.D. wrote 1,554 Medicare Part D claims totaling $124K in drug costs for 611 beneficiaries.
What is THOMAS BROWNING, M.D.'s Medicare quality score?
THOMAS BROWNING, M.D. has a CMS MIPS Final Score of 96.6104/100 (Quality: 100, Cost: 88.7013). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is THOMAS BROWNING, M.D. located?
THOMAS BROWNING, M.D. is located at 1798 ROANE STATE HIGHWAY, HARRIMAN, TN, 37748. Phone: (865) 882-7470.
What is THOMAS BROWNING, M.D.'s NPI number?
THOMAS BROWNING, M.D.'s National Provider Identifier (NPI) is 1467457804, issued on 06/14/2005.
Does THOMAS BROWNING, M.D. prescribe more brand-name or generic drugs?
THOMAS BROWNING, M.D.'s prescribing is 42% brand-name and 58% generic drugs by claim count, with $97K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does THOMAS BROWNING, M.D. prescribe most often?
Based on 2023 Medicare Part D data, THOMAS BROWNING, M.D.'s most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS BROWNING, M.D. accept Medicare?
THOMAS BROWNING, M.D. appears in CMS Medicare data with 1,554 Part D claims and 611 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS BROWNING, M.D.'s credentials?
THOMAS BROWNING, M.D.'s NPI is 1467457804 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