2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1548616485 M.D.
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PETER CLARK, M.D.

Retina Specialist (Ophthalmology) Physician in WENATCHEE, Washington. 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
210
Medicare Part D claims · 68 beneficiaries · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$5.9K
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: PETER CLARK, M.D. is a Retina Specialist (Ophthalmology) Physician ([object Object]) practicing in WENATCHEE, Washington with a Medicare Part D prescribing footprint of 210 claims across 68 beneficiaries — 26% brand-name prescribing . Industry payments of $5.9K across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: PETER CLARK, M.D. filed 210 Medicare Part D claims in 2023 across WENATCHEE, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

PETER CLARK, 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).

PETER CLARK, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/10/2016

NPI 1548616485

Primary specialty

Retina Specialist (Ophthalmology) Physician

Niche

913 US NPIs in this specialty

Medicare Part D claims

210 62% vs specialty avg

2023 prescription claims

Specialty avg: 558

Specialty distribution in Washington

How Retina Specialist (Ophthalmology) Physician compares to other specialties among Washington providers

Washington providers

Retina Specialist (Ophthalmology) Physician share within Washington

1. Retina Specialist (Ophthalmology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Retina Specialist (Ophthalmology) Physician share within Washington

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Retina Specialist (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).

PETER CLARK, M.D. is a Retina Specialist (Ophthalmology) Physician provider practicing in WENATCHEE, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1548616485. 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.

PETER CLARK, M.D. appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding M.D. credentials at 933 RED APPLE RD, WENATCHEE, WA, 98801, with a listed phone of (509) 663-8711. NPI 1548616485 was issued on 05/10/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CLARK 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 210 prescription claims written by this provider, covering 68 Medicare beneficiaries and totaling roughly $7K in drug spend, split 26% brand-name and 74% 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.

Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 558 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

933 RED APPLE RD
WENATCHEE, WA 98801

Provider Details

NPI 1548616485
Specialty Retina Specialist (Ophthalmology) Physician
Credentials M.D.
Gender Male
NPI Issued 05/10/2016

Hospital and facility affiliations

Facilities where PETER CLARK, 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.

CENTRAL WASHINGTON HEALTH SERVICES ASSOCIATION
WENATCHEE, WA

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 PETER CLARK, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$5.9K

Largest payer

Carl Zeiss Meditec Digital Innovations LLC

Most common payment type

Debt forgiveness

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.

License & disciplinary context — Washington WMC 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 ~34K Washington medical licensees in 2023 — they are NOT specific to PETER CLARK, M.D.. To verify PETER CLARK, M.D.'s current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

PETER CLARK, M.D. — brand share 26.0%
Specialty average (est.)

26% brand-name claims vs 74% generic, on 210 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.

210
Total Claims
$7K
Total Drug Cost
68
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
294
Total Day Supply
7,423
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$3K
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.60
Gender Split
51% female / 49% 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
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
47
Ketorolac Tromethamine
32
Prednisolone Acetate
32
Brimonidine Tartrate
22
Latanoprost
19

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

Retina Specialist (Ophthalmology) Physician Overview

How PETER CLARK, M.D. fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.

913
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider

PETER CLARK, M.D.'s 210 claims are below the specialty average of 558.

Nearby Retina Specialist (Ophthalmology) Physician Providers in Washington

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

Compare Retina Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is PETER CLARK, M.D.'s specialty?
PETER CLARK, M.D. specializes in Retina Specialist (Ophthalmology) Physician and practices in WENATCHEE, Washington. Credentials: M.D..
How much does PETER CLARK, M.D. prescribe under Medicare Part D?
In 2023, PETER CLARK, M.D. wrote 210 Medicare Part D claims totaling $7K in drug costs for 68 beneficiaries.
Where is PETER CLARK, M.D. located?
PETER CLARK, M.D. is located at 933 RED APPLE RD, WENATCHEE, WA, 98801. Phone: (509) 663-8711.
What is PETER CLARK, M.D.'s NPI number?
PETER CLARK, M.D.'s National Provider Identifier (NPI) is 1548616485, issued on 05/10/2016.
Does PETER CLARK, M.D. prescribe more brand-name or generic drugs?
PETER CLARK, M.D.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $3K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US?
There are 913 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
What drugs does PETER CLARK, M.D. prescribe most often?
Based on 2023 Medicare Part D data, PETER CLARK, M.D.'s most frequently prescribed drugs include Dorzolamide-Timolol, Ketorolac Tromethamine, Prednisolone Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PETER CLARK, M.D. accept Medicare?
PETER CLARK, M.D. appears in CMS Medicare data with 210 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 PETER CLARK, M.D.'s credentials?
PETER CLARK, M.D.'s NPI is 1548616485 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