2026 NPPES data Ophthalmology Physician NPI 1104872324 M.D.
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INA DROWN, M.D.

Ophthalmology Physician in WILLMAR, Minnesota. 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 · 366 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
71%
generic claims · 29% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: INA DROWN, M.D. is a Ophthalmology Physician ([object Object]) practicing in WILLMAR, Minnesota with a Medicare Part D prescribing footprint of 2K claims across 366 beneficiaries — 29% brand-name prescribing .

What stands out: INA DROWN, M.D. filed 1,646 Medicare Part D claims in 2023 across WILLMAR, Minnesota. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

INA DROWN, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

INA DROWN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/26/2006

NPI 1104872324

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,646 16% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Minnesota

How Ophthalmology Physician compares to other specialties among Minnesota providers

Minnesota providers

Ophthalmology Physician share within Minnesota

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

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).

INA DROWN, M.D. is a Ophthalmology Physician provider practicing in WILLMAR, Minnesota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1104872324. 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.

INA DROWN, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 1604 1ST ST S, WILLMAR, MN, 56201, with a listed phone of (320) 231-5039. NPI 1104872324 was issued on 05/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DROWN 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 1,646 prescription claims written by this provider, covering 366 Medicare beneficiaries and totaling roughly $109K in drug spend, split 29% brand-name and 71% 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

1604 1ST ST S
WILLMAR, MN 56201

Provider Details

NPI 1104872324
Specialty Ophthalmology Physician
Credentials M.D.
Gender Female
NPI Issued 05/26/2006

Brand vs generic prescribing mix · Above average

INA DROWN, M.D. — brand share 29.0%
Specialty average (est.)

29% brand-name claims vs 71% generic, on 1,646 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.

1,646
Total Claims
$109K
Total Drug Cost
366
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,328
Total Day Supply
59,889
Brand vs Generic
29% brand / 71% generic
Brand Drug Cost
$66K
Generic Drug Cost
$43K
Antibiotic Claims
21

Patient Demographics

Average Patient Age
75.9 years
Avg HCC Risk Score
1.35
Gender Split
60% female / 40% male
Age Distribution
<65: 17, 65-74: 146, 75-84: 142, 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
314
Prednisolone Acetate
304
Ketorolac Tromethamine
302
Moxifloxacin
Moxifloxacin Hcl
269
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
97
Timolol Maleate
63
Erythromycin
Erythromycin Base
47
Dorzolamide Hcl
38
Restasis
Cyclosporine
25
Brimonidine Tartrate
24

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

Ophthalmology Physician Overview

How INA DROWN, 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

INA DROWN, M.D.'s 1,646 claims are above the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Minnesota

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

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

Frequently Asked Questions

What is INA DROWN, M.D.'s specialty?
INA DROWN, M.D. specializes in Ophthalmology Physician and practices in WILLMAR, Minnesota. Credentials: M.D..
How much does INA DROWN, M.D. prescribe under Medicare Part D?
In 2023, INA DROWN, M.D. wrote 1,646 Medicare Part D claims totaling $109K in drug costs for 366 beneficiaries.
Where is INA DROWN, M.D. located?
INA DROWN, M.D. is located at 1604 1ST ST S, WILLMAR, MN, 56201. Phone: (320) 231-5039.
What is INA DROWN, M.D.'s NPI number?
INA DROWN, M.D.'s National Provider Identifier (NPI) is 1104872324, issued on 05/26/2006.
Does INA DROWN, M.D. prescribe more brand-name or generic drugs?
INA DROWN, M.D.'s prescribing is 29% brand-name and 71% generic drugs by claim count, with $66K 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 INA DROWN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, INA DROWN, M.D.'s most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Ketorolac Tromethamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does INA DROWN, M.D. accept Medicare?
INA DROWN, M.D. appears in CMS Medicare data with 1,646 Part D claims and 366 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify INA DROWN, M.D.'s credentials?
INA DROWN, M.D.'s NPI is 1104872324 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.
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