NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1538165402 M.D.
Verify on CMS → Stephen Comeau, M.D.
Nephrology Physician in Bangor, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,806 in Nephrology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
594
Medicare Part D claims · 144 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Stephen Comeau, M.D. carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 594 Medicare Part D claims in 2024.
- 75/100
- CMS neutral score · not measured
- 594
- Part D claims, 2024
- 83%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Stephen Comeau, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1538165402), first enumerated 06/24/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 594 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
CMS assigned a neutral MIPS final score of 75/100 where no performance category was scored — not a measured quality rank.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1538165402 · Nephrology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-NEUTRAL · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1538165402
- ENUM-LEGACY 2005
- TAX-MID 11K Nephrology Physician
- MIPS-NEUTRAL 75/100
- RX-LIGHT 594
- BOOK-THIN 43 in Maine
- PHOTO-ENUM James Hasbargen, M.D. · 2005
Stephen Comeau, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
594 ≥ 65th percentile 65% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
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 + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Stephen Comeau, M.D.?
CMS neutral score, not measuredPrimary specialty
Nephrology Physician
Medicare Part D claims
594 61% vs specialty avg
MIPS final score
75/100
Specialty distribution in Maine
How Nephrology Physician compares to other specialties among Maine providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
How MIPS and board certification work
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).
Practice Address
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
CMS neutral threshold · not measured
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.
Mercy Hospital
Portland, ME
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 17.0%
Nephrology Physician average
17% brand-name claims vs 83% generic, on 594 2024 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 2024.
594
Total Claims
$138K
Total Drug Cost
144
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,496.133
- Total Day Supply
- 44,390
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $108K
- Generic Drug Cost
- $30K
Patient Demographics
- Average Patient Age
- 68.2 years
- Avg HCC Risk Score
- 5.30
- Gender Split
- 44% female / 56% male
- Age Distribution
- <65: 44, 65-74: 51, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Stephen Comeau, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Calcitriol
Calcitriol
81 claims
- Furosemide
Furosemide
66 claims
- Losartan Potassium
Losartan Potassium
51 claims
- Sevelamer Carbonate
Sevelamer Carbonate
42 claims
- Amlodipine Besylate
Amlodipine Besylate
36 claims
- Lisinopril 20
Lisinopril
20 claims
- Calcium Acetate 19
Calcium Acetate
19 claims
- Prednisone 19
Prednisone
19 claims
| Drug | Claims |
|---|---|
| Calcitriol | 81 |
| Furosemide | 66 |
| Losartan Potassium | 51 |
| Sevelamer Carbonate | 42 |
| Amlodipine Besylate | 36 |
| Lisinopril | 20 |
| Calcium Acetate | 19 |
| Prednisone | 19 |
| Lokelma Sodium Zirconium Cyclosilicate | 18 |
| Allopurinol | 16 |
* 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.
10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider
Stephen Comeau, M.D.'s 594 claims are below the specialty average of 1,511.
Nationwide Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Comeau, both outside Maine so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 43 Nephrology Physician providers enrolled in Maine, 5 are shown here.
Dr. Michael Akom
M.D.
Portland, ME
Dr. Carl Blond
M.D.
Portland, ME
Dr. Mauricio Botero-Velez
M.D.
Belfast, ME
Dr. Patricia Cantlin
DO
Portland, ME
Dr. Ioan Cosma
MD
Portland, ME
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 2024, Stephen Comeau, M.D. wrote 594 Medicare Part D claims totaling $138K in drug costs for 144 beneficiaries.
What is Stephen Comeau, M.D.'s Medicare quality score? ▼
Stephen Comeau, M.D. has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. 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 17% brand-name and 83% generic drugs by claim count, with $108K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does Stephen Comeau, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Stephen Comeau, M.D.'s most frequently prescribed drugs include Calcitriol, Furosemide, Losartan Potassium. 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 594 Part D claims and 144 Medicare beneficiaries in 2024. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.