NPI registry status
Active
2026 NPPES data Addiction Psychiatry Physician NPI 1023228327 MD
Verify on CMS → Harold Amsel, MD
Addiction Psychiatry Physician in Ellsworth, 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 683 in Addiction Psychiatry 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
623
Medicare Part D claims · 68 beneficiaries · Addiction Psychiatry Physician avg: 789
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.1/100
▲ 15 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Harold Amsel, MD reported a CMS MIPS final score of 98.1/100 - above the 83.5 national average - and filed 623 Medicare Part D claims in 2024.
- 98.1/100
- MIPS score · +15 vs avg
- 623
- Part D claims, 2024
- 95%
- 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 Harold Amsel, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1023228327), first enumerated 05/23/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 623 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)
Reported a CMS MIPS final score of 98.1/100 in the Quality Payment Program — a federal quality measure, not a patient review.
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
1 CMS Care Compare hospital affiliation 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 1023228327 · Addiction Psychiatry Physician
NPI-10 · ENUM-MID · TAX-NARROW · MIPS-ELITE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1023228327
- ENUM-MID 2007
- TAX-NARROW 683
- MIPS-ELITE 98.1/100
- RX-LIGHT 623
- BOOK-THIN 6 in Maine
- PHOTO-FINISH Richard Rosenthal, MD · ±0.4
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Michael Dekker, …
Michael Dekker, D.O.
96.9 MIPS pts
- India Reddy, MD …
India Reddy, MD
97.1 MIPS pts
- Alexis Ritvo, MD…
Alexis Ritvo, MD MPH
97.6 MIPS pts
- Amsel · this pro…
Amsel · this provider
98.1 MIPS pts
- Richard Rosentha…
Richard Rosenthal, MD
98.5 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Harold Amsel, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
98 ≥ 89th percentile 89% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Harold Amsel, MD sits
This provider among addiction psychiatry physician peers
Across the 73 addiction psychiatry physician providers who report both Medicare Part D prescribing and a MIPS quality score, Harold Amsel, MD writes more Part D claims than 78% of them and scores higher on MIPS quality than 82% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one addiction psychiatry physician peer from a representative sample of 60; the gold marker is Harold Amsel, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Harold Amsel, MD 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).
What does the federal data show about Harold Amsel, MD?
High performer (top quartile)Primary specialty
Addiction Psychiatry Physician
Medicare Part D claims
623 21% vs specialty avg
MIPS final score
98.1/100 14.6 pts vs avg
Specialty distribution in Maine
How Addiction Psychiatry Physician compares to other specialties among Maine providers
Medicare quality performance, MIPS
Harold Amsel, MD's 2023 MIPS final score plotted against the Addiction Psychiatry Physician national average
- MIPS Final Score
- 98.1/100
- vs 83.5 national avg · 2023 performance year
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 | 1023228327 |
|---|---|
| Specialty | Addiction Psychiatry Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/23/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
98.0699
Final Score
Measured-score avg: 83.5
86.1398
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Harold Amsel, MD 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.
Aroostook Mental Health Services, Inc.
Ellsworth, 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 · Generic-heavy
Harold Amsel, MD - brand share 5.0%
Addiction Psychiatry Physician average
5% brand-name claims vs 95% generic, on 623 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.
623
Total Claims
$60K
Total Drug Cost
68
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 807.733
- Total Day Supply
- 22,983
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $41K
- Generic Drug Cost
- $19K
Patient Demographics
- Average Patient Age
- 49.7 years
- Avg HCC Risk Score
- 1.06
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Harold Amsel, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Duloxetine Hcl
Duloxetine Hcl
38 claims
- Aripiprazole
Aripiprazole
32 claims
- Gabapentin
Gabapentin
32 claims
- Sertraline Hcl
Sertraline Hcl
30 claims
- Clonazepam
Clonazepam
27 claims
- Lamotrigine
Lamotrigine
27 claims
- Trazodone Hcl
Trazodone Hcl
27 claims
- Venlafaxine Hcl Er
Venlafaxine Hcl Er
26 claims
| Drug | Claims |
|---|---|
| Duloxetine Hcl | 38 |
| Aripiprazole | 32 |
| Gabapentin | 32 |
| Sertraline Hcl | 30 |
| Clonazepam | 27 |
| Lamotrigine | 27 |
| Trazodone Hcl | 27 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 26 |
| Lorazepam | 23 |
| Prazosin Hcl | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Addiction Psychiatry Physician Overview
How Harold Amsel, MD fits within the Addiction Psychiatry Physician landscape nationally.
683
Addiction Psychiatry Physician Providers in US
49
States with Addiction Psychiatry Physician
789
Avg Claims per Provider
Harold Amsel, MD's 623 claims are below the specialty average of 789.
Nationwide Addiction Psychiatry Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Amsel, both outside Maine so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (98.1 here).
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Addiction Psychiatry Physician Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Amsel.
One of 6 Addiction Psychiatry Physician providers enrolled in Maine, 5 are shown here.
Dr. Mary Louisa Barnhart
MD
Waterville, ME
Nathaniel Bridgeo
LADC, MHRT/C, BHP
Bangor, ME
Dr. Christopher Buttarazzi
MD
Portland, ME
Ryan Jones
CADC
Brunswick, ME
Dr. Kathryn Yung
MD
Brunswick, ME
Compare Addiction Psychiatry Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Harold Amsel, MD's specialty? ▼
Harold Amsel, MD specializes in Addiction Psychiatry Physician and practices in Ellsworth, Maine. Credentials: MD.
How much does Harold Amsel, MD prescribe under Medicare Part D? ▼
In 2024, Harold Amsel, MD wrote 623 Medicare Part D claims totaling $60K in drug costs for 68 beneficiaries.
What is Harold Amsel, MD's Medicare quality score? ▼
Harold Amsel, MD has a CMS MIPS Final Score of 98.1/100 (Quality: 86.1). 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 Harold Amsel, MD located? ▼
Harold Amsel, MD is located at 70 KINGSLAND XING, Ellsworth, ME, 04605. Phone: (207) 667-6890.
What is Harold Amsel, MD's NPI number? ▼
Harold Amsel, MD's National Provider Identifier (NPI) is 1023228327, issued on 05/23/2007.
Does Harold Amsel, MD prescribe more brand-name or generic drugs? ▼
Harold Amsel, MD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $41K in brand drug costs.
How many Addiction Psychiatry Physician providers are there in the US? ▼
There are 683 Addiction Psychiatry Physician providers across 49 states in the US. The average Addiction Psychiatry Physician provider writes 789 Medicare Part D claims per year.
What drugs does Harold Amsel, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Harold Amsel, MD's most frequently prescribed drugs include Duloxetine Hcl, Aripiprazole, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Harold Amsel, MD accept Medicare? ▼
Harold Amsel, MD appears in CMS Medicare data with 623 Part D claims and 68 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Harold Amsel, MD's credentials? ▼
Harold Amsel, MD's NPI is 1023228327 with credentials MD. 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.