2026 NPPES data Internal Medicine Physician NPI 1225121726 M.D.
Verify on CMS →

WILLIAM COOMEY, M.D.

Internal Medicine Physician in ELIOT, Maine. 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
5K
Medicare Part D claims · 310 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.0699/100
▲ 15 pts above national avg 83.1 · [object Object]
What the federal data reveals: WILLIAM COOMEY, M.D. is a Internal Medicine Physician ([object Object]) practicing in ELIOT, Maine with a Medicare Part D prescribing footprint of 5K claims across 310 beneficiaries — 11% brand-name prescribing . Their CMS MIPS Final Score of 98.0699/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: WILLIAM COOMEY, M.D. reported a CMS MIPS final score of 98.0699 out of 100, above the 83.1 national average, and filed 4,800 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)

WILLIAM COOMEY, 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).

WILLIAM COOMEY, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 10/02/2006

NPI 1225121726

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

4,800 77% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

98.0699/100 14.96990000000001% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Maine

How Internal Medicine Physician compares to other specialties among Maine providers

Maine providers

Internal Medicine Physician share within Maine

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

Medicare quality performance — MIPS

WILLIAM COOMEY, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average

High performer (top quartile)
MIPS Final Score
98.0699/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 98.0699/100 vs national avg 83.1

0%100%National avg83%98.1%
MIPS final score (Internal Medicine Physician) — 98.0699/100 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).

WILLIAM COOMEY, M.D. is a Internal Medicine Physician provider practicing in ELIOT, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1225121726. 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.

WILLIAM COOMEY, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 17 LEVESQUE DRIVE, ELIOT, ME, 03903, with a listed phone of (207) 439-2774. NPI 1225121726 was issued on 10/02/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COOMEY 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 4,800 prescription claims written by this provider, covering 310 Medicare beneficiaries and totaling roughly $540K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 3.6%. 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 98.0699/100 for the 2023 performance year (Quality 86.1398), compared with the national average of 83.1.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

17 LEVESQUE DRIVE
ELIOT, ME 03903

Provider Details

NPI 1225121726
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 10/02/2006

CMS Quality Score (MIPS)

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

98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where WILLIAM COOMEY, 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.

YORK HOSPITAL
★★★★☆ 4/5
YORK, ME
Acute Care Hospitals
CMS CCN: 200020

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 · Typical

WILLIAM COOMEY, M.D. — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 4,800 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.

4,800
Total Claims
$540K
Total Drug Cost
310
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
11,167
Total Day Supply
322,374
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$434K
Generic Drug Cost
$103K
Opioid Claims
171 (3.6% rate)
Antibiotic Claims
240

Patient Demographics

Average Patient Age
75.4 years
Avg HCC Risk Score
0.87
Gender Split
50% female / 50% male
Age Distribution
<65: 12, 65-74: 129, 75-84: 135, 85+: 34

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
207
Amlodipine Besylate
204
Hydrochlorothiazide
193
Lisinopril
192
Losartan Potassium
170
Omeprazole
156
Levothyroxine Sodium
153
Rosuvastatin Calcium
108
Pantoprazole Sodium
96
Metoprolol Succinate
90

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

Internal Medicine Physician Overview

How WILLIAM COOMEY, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

WILLIAM COOMEY, M.D.'s 4,800 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Maine

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM COOMEY, M.D.'s specialty?
WILLIAM COOMEY, M.D. specializes in Internal Medicine Physician and practices in ELIOT, Maine. Credentials: M.D..
How much does WILLIAM COOMEY, M.D. prescribe under Medicare Part D?
In 2023, WILLIAM COOMEY, M.D. wrote 4,800 Medicare Part D claims totaling $540K in drug costs for 310 beneficiaries.
What is WILLIAM COOMEY, M.D.'s Medicare quality score?
WILLIAM COOMEY, M.D. has a CMS MIPS Final Score of 98.0699/100 (Quality: 86.1398). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is WILLIAM COOMEY, M.D. located?
WILLIAM COOMEY, M.D. is located at 17 LEVESQUE DRIVE, ELIOT, ME, 03903. Phone: (207) 439-2774.
What is WILLIAM COOMEY, M.D.'s NPI number?
WILLIAM COOMEY, M.D.'s National Provider Identifier (NPI) is 1225121726, issued on 10/02/2006.
Does WILLIAM COOMEY, M.D. prescribe more brand-name or generic drugs?
WILLIAM COOMEY, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $434K in brand drug costs.
Does WILLIAM COOMEY, M.D. prescribe opioids?
Yes, WILLIAM COOMEY, M.D. had 171 opioid claims in 2023 with an opioid prescribing rate of 3.6%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does WILLIAM COOMEY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM COOMEY, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Hydrochlorothiazide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM COOMEY, M.D. accept Medicare?
WILLIAM COOMEY, M.D. appears in CMS Medicare data with 4,800 Part D claims and 310 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM COOMEY, M.D.'s credentials?
WILLIAM COOMEY, M.D.'s NPI is 1225121726 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