NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1235456328 D.O.
Verify on CMS → Alison McMaster, D.O.
Family Medicine Physician in Hanover, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine 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
6K
Medicare Part D claims · 434 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
82.5/100
▼ 1 pts below national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Alison McMaster, D.O. reported a CMS MIPS final score of 82.5/100 - below the 83.5 national average - and filed 5,578 Medicare Part D claims in 2023.
- 82.5/100
- MIPS score · -1 vs avg
- 6K
- Part D claims, 2023
- 88%
- 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 Alison McMaster, D.O.
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 1235456328), first enumerated 04/28/2010.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 5,578 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 82.5/100 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
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Pennsylvania statewide board action statistics are published annually — these figures describe aggregate state activity, not Alison McMaster, D.O.'s individual license status. Verify directly with the state medical board.
Source: PA-BOM annual report 2023
- 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 1235456328 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-INLINE · RX-MID · BOOK-MID · PHOTO-FINISH
- NPI-10 1235456328
- ENUM-MID 2010
- TAX-MEGA 148K Family Medicine
- MIPS-INLINE 82.5/100
- RX-MID 5,578
- BOOK-MID 7,200 in Pennsylvania
- PHOTO-FINISH Fotini Debonera · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- McMaster · this …
McMaster · this provider
82.5 MIPS pts
- Jenna Van Dusen …
Jenna Van Dusen
82.5 MIPS pts
- Fotini Debonera …
Fotini Debonera
82.5 MIPS pts
- Tierra Leak · near
Tierra Leak
82.5 MIPS pts
- Monica Stallwort…
Monica Stallworth-Kolimas
82.5 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Alison McMaster, D.O.'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.
83 ≥ 36th percentile 36% 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 Alison McMaster, D.O. sits
This provider among family medicine physician peers
Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Alison McMaster, D.O. writes more Part D claims than 71% of them and scores higher on MIPS quality than 35% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Alison McMaster, D.O.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Alison McMaster, D.O. 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 Alison McMaster, D.O.?
Near national averagePrimary specialty
Family Medicine Physician
Medicare Part D claims
5,578 63% vs specialty avg
MIPS final score
82.5/100 1 pts vs avg
Specialty distribution in Pennsylvania
How Family Medicine Physician compares to other specialties among Pennsylvania providers
Medicare quality performance, MIPS
Alison McMaster, D.O.'s 2023 MIPS final score plotted against the Family Medicine Physician national average
- MIPS Final Score
- 82.5/100
- 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 | 1235456328 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 04/28/2010 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
82.5421
Final Score
Measured-score avg: 83.5
76.6258
Quality
65.1813
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Alison McMaster, D.O. 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.
Phoenix Rehabilitation And Health Services Inc
Cranberry Township, PA
Pinnacle Health Medical Services
Hanover, PA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Alison McMaster, D.O.. To verify Alison McMaster, D.O.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Alison McMaster, D.O. - brand share 11.0%
Family Medicine Physician average
11% brand-name claims vs 88% generic, on 5,578 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.
5,578
Total Claims
$562K
Total Drug Cost
434
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 12,717
- Total Day Supply
- 372,499
- Brand vs Generic
- 11% brand / 88% generic
- Brand Drug Cost
- $464K
- Generic Drug Cost
- $94K
- Opioid Claims
- 51 (0.9% rate)
- Antibiotic Claims
- 82
Patient Demographics
- Average Patient Age
- 74.2 years
- Avg HCC Risk Score
- 0.89
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 21, 65-74: 227, 75-84: 127, 85+: 59
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alison McMaster, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Lisinopril
Lisinopril
326 claims
- Atorvastatin Calcium
Atorvastatin Calcium
312 claims
- Pantoprazole Sodium
Pantoprazole Sodium
219 claims
- Levothyroxine Sodium
Levothyroxine Sodium
207 claims
- Amlodipine Besylate
Amlodipine Besylate
204 claims
- Metoprolol Succinate
Metoprolol Succinate
149 claims
- Omeprazole
Omeprazole
140 claims
- Sertraline Hcl 104
Sertraline Hcl
104 claims
| Drug | Claims |
|---|---|
| Lisinopril | 326 |
| Atorvastatin Calcium | 312 |
| Pantoprazole Sodium | 219 |
| Levothyroxine Sodium | 207 |
| Amlodipine Besylate | 204 |
| Metoprolol Succinate | 149 |
| Omeprazole | 140 |
| Sertraline Hcl | 104 |
| Metformin Hcl | 100 |
| Gabapentin | 99 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Alison McMaster, D.O. fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Alison McMaster, D.O.'s 5,578 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for McMaster, both outside Pennsylvania so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (82.5 here).
Same NPPES enumeration year (2010)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as McMaster.
One of 7,200 Family Medicine Physician providers enrolled in Pennsylvania, 5 are shown here.
Christopher Aaron
Cresson, PA
Dr. Jose Abad
MD
Pittsburgh, PA
Dr. Ray Abarintos
MD
Philadelphia, PA
Dr. Jasim Abbasi
DO
Erie, PA
Dr. Alyssa Abbott
CRNP
Hermitage, PA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Alison McMaster, D.O.'s specialty? ▼
Alison McMaster, D.O. specializes in Family Medicine Physician and practices in Hanover, Pennsylvania. Credentials: D.O..
How much does Alison McMaster, D.O. prescribe under Medicare Part D? ▼
In 2023, Alison McMaster, D.O. wrote 5,578 Medicare Part D claims totaling $562K in drug costs for 434 beneficiaries.
What is Alison McMaster, D.O.'s Medicare quality score? ▼
Alison McMaster, D.O. has a CMS MIPS Final Score of 82.5/100 (Quality: 76.6, Cost: 65.2). 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 Alison McMaster, D.O. located? ▼
Alison McMaster, D.O. is located at 250 FAME AVE STE 206A, Hanover, PA, 17331. Phone: (717) 316-2248.
What is Alison McMaster, D.O.'s NPI number? ▼
Alison McMaster, D.O.'s National Provider Identifier (NPI) is 1235456328, issued on 04/28/2010.
Does Alison McMaster, D.O. prescribe more brand-name or generic drugs? ▼
Alison McMaster, D.O.'s prescribing is 11% brand-name and 88% generic drugs by claim count, with $464K in brand drug costs.
Does Alison McMaster, D.O. prescribe opioids? ▼
Yes, Alison McMaster, D.O. had 51 opioid claims in 2023 with an opioid prescribing rate of 0.9%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Alison McMaster, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Alison McMaster, D.O.'s most frequently prescribed drugs include Lisinopril, Atorvastatin Calcium, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alison McMaster, D.O. accept Medicare? ▼
Alison McMaster, D.O. appears in CMS Medicare data with 5,578 Part D claims and 434 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alison McMaster, D.O.'s credentials? ▼
Alison McMaster, D.O.'s NPI is 1235456328 with credentials D.O.. 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 (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
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 May 2026.