2026 NPPES data Ophthalmology Physician NPI 1598339202 MD
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DOUGLAS BROWN, MD

Ophthalmology Physician in BALTIMORE, 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
277
Medicare Part D claims · 68 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: DOUGLAS BROWN, MD is a Ophthalmology Physician ([object Object]) practicing in BALTIMORE, Maryland with a Medicare Part D prescribing footprint of 277 claims across 68 beneficiaries — 53% brand-name prescribing .

What stands out: DOUGLAS BROWN, MD filed 277 Medicare Part D claims in 2023 across BALTIMORE, Maryland. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

DOUGLAS BROWN, MD 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).

DOUGLAS BROWN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 05/17/2021

NPI 1598339202

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

277 80% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Maryland

How Ophthalmology Physician compares to other specialties among Maryland providers

Maryland providers

Ophthalmology Physician share within Maryland

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

Specialty board-certification context

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

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

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

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

DOUGLAS BROWN, MD is a Ophthalmology Physician provider practicing in BALTIMORE, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1598339202. 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.

DOUGLAS BROWN, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 419 W REDWOOD ST STE 470, BALTIMORE, MD, 21201, with a listed phone of (667) 214-1197. NPI 1598339202 was issued on 05/17/2021. 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 277 prescription claims written by this provider, covering 68 Medicare beneficiaries and totaling roughly $43K in drug spend, split 53% brand-name and 47% 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.

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

419 W REDWOOD ST STE 470
BALTIMORE, MD 21201

Provider Details

NPI 1598339202
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 05/17/2021

Hospital and facility affiliations

Facilities where DOUGLAS BROWN, MD 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.

UNIVERSITY OF MARYLAND EYE ASSOCIATES, P.A.
BALTIMORE, 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).

Brand vs generic prescribing mix · Brand-heavy

DOUGLAS BROWN, MD — brand share 53.0%
Specialty average (est.)

53% brand-name claims vs 47% generic, on 277 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.

277
Total Claims
$43K
Total Drug Cost
68
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
420
Total Day Supply
11,424
Brand vs Generic
53% brand / 47% generic
Brand Drug Cost
$37K
Generic Drug Cost
$6K

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
1.99
Gender Split
65% female / 35% male

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
64
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
30
Rhopressa
Netarsudil Mesylate
29
Prednisolone Acetate
22
Brinzolamide
20
Rocklatan
Netarsudil Mesylat/Latanoprost
15
Lumigan
Bimatoprost
14
Brimonidine Tartrate
12
Travoprost
12

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

Ophthalmology Physician Overview

How DOUGLAS BROWN, MD 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

DOUGLAS BROWN, MD's 277 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Maryland

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

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

Frequently Asked Questions

What is DOUGLAS BROWN, MD's specialty?
DOUGLAS BROWN, MD specializes in Ophthalmology Physician and practices in BALTIMORE, Maryland. Credentials: MD.
How much does DOUGLAS BROWN, MD prescribe under Medicare Part D?
In 2023, DOUGLAS BROWN, MD wrote 277 Medicare Part D claims totaling $43K in drug costs for 68 beneficiaries.
Where is DOUGLAS BROWN, MD located?
DOUGLAS BROWN, MD is located at 419 W REDWOOD ST STE 470, BALTIMORE, MD, 21201. Phone: (667) 214-1197.
What is DOUGLAS BROWN, MD's NPI number?
DOUGLAS BROWN, MD's National Provider Identifier (NPI) is 1598339202, issued on 05/17/2021.
Does DOUGLAS BROWN, MD prescribe more brand-name or generic drugs?
DOUGLAS BROWN, MD's prescribing is 53% brand-name and 47% generic drugs by claim count, with $37K 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 DOUGLAS BROWN, MD prescribe most often?
Based on 2023 Medicare Part D data, DOUGLAS BROWN, MD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Rhopressa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DOUGLAS BROWN, MD accept Medicare?
DOUGLAS BROWN, MD appears in CMS Medicare data with 277 Part D claims and 68 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DOUGLAS BROWN, MD's credentials?
DOUGLAS BROWN, MD's NPI is 1598339202 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

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