2026 NPPES data Nephrology Physician NPI 1538165402 M.D.
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STEPHEN COMEAU, M.D.

Nephrology Physician in BANGOR, 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
576
Medicare Part D claims · 156 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
▼ 8 pts below national avg 83.1 · [object Object]
What the federal data reveals: STEPHEN COMEAU, M.D. is a Nephrology Physician ([object Object]) practicing in BANGOR, Maine with a Medicare Part D prescribing footprint of 576 claims across 156 beneficiaries — 15% brand-name prescribing . Their CMS MIPS Final Score of 75/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: STEPHEN COMEAU, M.D. reported a CMS MIPS final score of 75 out of 100, below the 83.1 national average, and filed 576 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)

STEPHEN COMEAU, 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).

STEPHEN COMEAU, M.D. at a glance

Below national average

NPI registry status

Active

Issued 06/24/2005

NPI 1538165402

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

576 60% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

75/100 8.099999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Maine

How Nephrology Physician compares to other specialties among Maine providers

Maine providers

Nephrology Physician share within Maine

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

Medicare quality performance — MIPS

STEPHEN COMEAU, M.D.'s 2023 MIPS final score plotted against the Nephrology Physician national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (Nephrology Physician) — 75/100 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).

STEPHEN COMEAU, M.D. is a Nephrology Physician provider practicing in BANGOR, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1538165402. 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.

STEPHEN COMEAU, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 417 STATE ST, BANGOR, ME, 04401, with a listed phone of (207) 973-8833. NPI 1538165402 was issued on 06/24/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COMEAU 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 576 prescription claims written by this provider, covering 156 Medicare beneficiaries and totaling roughly $125K in drug spend, split 15% brand-name and 85% 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 75/100 for the 2023 performance year, compared with the national average of 83.1.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

417 STATE ST
BANGOR, ME 04401

Provider Details

NPI 1538165402
Specialty Nephrology Physician
Credentials M.D.
Gender Male
NPI Issued 06/24/2005

CMS Quality Score (MIPS)

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

75
Final Score
Avg: 83.1

Reporting: Group practice

Hospital and facility affiliations

Facilities where STEPHEN COMEAU, 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.

NORTHEAST NEPHROLOGY PA
BANGOR, ME

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

STEPHEN COMEAU, M.D. — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 576 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.

576
Total Claims
$125K
Total Drug Cost
156
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,510
Total Day Supply
44,673
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$81K
Generic Drug Cost
$44K
Antibiotic Claims
14

Patient Demographics

Average Patient Age
67.7 years
Avg HCC Risk Score
5.60
Gender Split
43% female / 57% male
Age Distribution
<65: 52, 65-74: 52, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Calcitriol
83
Furosemide
71
Sevelamer Carbonate
38
Lisinopril
37
Amlodipine Besylate
31
Losartan Potassium
30
Farxiga
Dapagliflozin Propanediol
23
Prednisone
22
Allopurinol
21
Calcium Acetate
19

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

Nephrology Physician Overview

How STEPHEN COMEAU, M.D. fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

STEPHEN COMEAU, M.D.'s 576 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Maine

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

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

Frequently Asked Questions

What is STEPHEN COMEAU, M.D.'s specialty?
STEPHEN COMEAU, M.D. specializes in Nephrology Physician and practices in BANGOR, Maine. Credentials: M.D..
How much does STEPHEN COMEAU, M.D. prescribe under Medicare Part D?
In 2023, STEPHEN COMEAU, M.D. wrote 576 Medicare Part D claims totaling $125K in drug costs for 156 beneficiaries.
What is STEPHEN COMEAU, M.D.'s Medicare quality score?
STEPHEN COMEAU, M.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STEPHEN COMEAU, M.D. located?
STEPHEN COMEAU, M.D. is located at 417 STATE ST, BANGOR, ME, 04401. Phone: (207) 973-8833.
What is STEPHEN COMEAU, M.D.'s NPI number?
STEPHEN COMEAU, M.D.'s National Provider Identifier (NPI) is 1538165402, issued on 06/24/2005.
Does STEPHEN COMEAU, M.D. prescribe more brand-name or generic drugs?
STEPHEN COMEAU, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $81K in brand drug costs.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does STEPHEN COMEAU, M.D. prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN COMEAU, M.D.'s most frequently prescribed drugs include Calcitriol, Furosemide, Sevelamer Carbonate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN COMEAU, M.D. accept Medicare?
STEPHEN COMEAU, M.D. appears in CMS Medicare data with 576 Part D claims and 156 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN COMEAU, M.D.'s credentials?
STEPHEN COMEAU, M.D.'s NPI is 1538165402 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