NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1467943100 PA-C
Verify on CMS → William Mohn, PA-C
Medical Physician Assistant in Springfield, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,694 in Medical Physician Assistant, 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
201
Medicare Part D claims · 152 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
William Mohn, PA-C filed 201 Medicare Part D claims in 2024 as a Medical Physician Assistant in Springfield, Massachusetts, prescribing 90% generic.
- 201
- Part D claims, 2024
- 90%
- generic prescribing
- ≥48th
- pct by Part D claim volume (lower-bound band)
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 William Mohn, PA-C
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1467943100), first enumerated 05/29/2018.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 201 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not William Mohn, PA-C's individual license status. Verify directly with the state medical board.
Source: BORIM 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 1467943100 · Medical Physician Assistant
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1467943100
- ENUM-RECENT 2018
- TAX-MID 41K Medical Physician
- RX-LIGHT 201
- BOOK-LIGHT 919 in Massachusetts
- PHOTO-ENUM Natalie Brewster, PA · 2018
William Mohn, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
201 ≥ 48th percentile 48% 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
What does the federal data show about William Mohn, PA-C?
Quality data not reportedPrimary specialty
Medical Physician Assistant
Medicare Part D claims
201 82% vs specialty avg
Specialty distribution in Massachusetts
How Medical Physician Assistant compares to other specialties among Massachusetts providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Medical Physician Assistant. Verify directly:
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 | 1467943100 |
|---|---|
| Specialty | Medical Physician Assistant |
| Credentials | PA-C |
| Gender | Male |
| NPI Issued | 05/29/2018 |
License & disciplinary context - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to William Mohn, PA-C. To verify William Mohn, PA-C's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
William Mohn, PA-C - brand share 10.0%
Medical Physician Assistant average
10% brand-name claims vs 90% generic, on 201 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.
201
Total Claims
$5K
Total Drug Cost
152
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 204
- Total Day Supply
- 1,845
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $3K
- Generic Drug Cost
- $2K
- Opioid Claims
- 26 (12.9% rate)
- Antibiotic Claims
- 100
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 1.29
- Gender Split
- 50% female / 50% male
- Age Distribution
- <65: 26, 65-74: 54, 75-84: 49, 85+: 23
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Mohn, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
20 claims
- Doxycycline Monohy…
Doxycycline Monohydrate
19 claims
- Oxycodone Hcl
Oxycodone Hcl
14 claims
- Cefpodoxime Proxetil
Cefpodoxime Proxetil
13 claims
- Prednisone
Prednisone
12 claims
- Cephalexin
Cephalexin
11 claims
| Drug | Claims |
|---|---|
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 20 |
| Doxycycline Monohydrate | 19 |
| Oxycodone Hcl | 14 |
| Cefpodoxime Proxetil | 13 |
| Prednisone | 12 |
| Cephalexin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Physician Assistant Overview
How William Mohn, PA-C fits within the Medical Physician Assistant landscape nationally.
40,694
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,139
Avg Claims per Provider
William Mohn, PA-C's 201 claims are below the specialty average of 1,139.
Nationwide Medical Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Mohn, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Medical Physician Assistant Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Mohn.
One of 919 Medical Physician Assistant providers enrolled in Massachusetts, 5 are shown here.
Matthew Abar
PA
Provincetown, MA
Jaime Abbiati
PA-C
Springfield, MA
Emily Adams
PA-C
Belmont, MA
Stephanie Adamski
PA-C
Holyoke, MA
Whitney Adrien Dadaille
PA-C
Peabody, MA
Compare Medical Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Mohn, PA-C's specialty? ▼
William Mohn, PA-C specializes in Medical Physician Assistant and practices in Springfield, Massachusetts. Credentials: PA-C.
How much does William Mohn, PA-C prescribe under Medicare Part D? ▼
In 2024, William Mohn, PA-C wrote 201 Medicare Part D claims totaling $5K in drug costs for 152 beneficiaries.
Where is William Mohn, PA-C located? ▼
William Mohn, PA-C is located at 759 CHESTNUT ST, Springfield, MA, 01107. Phone: (413) 794-3233.
What is William Mohn, PA-C's NPI number? ▼
William Mohn, PA-C's National Provider Identifier (NPI) is 1467943100, issued on 05/29/2018.
Does William Mohn, PA-C prescribe more brand-name or generic drugs? ▼
William Mohn, PA-C's prescribing is 10% brand-name and 90% generic drugs by claim count, with $3K in brand drug costs.
Does William Mohn, PA-C prescribe opioids? ▼
Yes, William Mohn, PA-C had 26 opioid claims in 2024 with an opioid prescribing rate of 12.9%.
How many Medical Physician Assistant providers are there in the US? ▼
There are 40,694 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,139 Medicare Part D claims per year.
What drugs does William Mohn, PA-C prescribe most often? ▼
Based on 2024 Medicare Part D data, William Mohn, PA-C's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Doxycycline Monohydrate, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Mohn, PA-C accept Medicare? ▼
William Mohn, PA-C appears in CMS Medicare data with 201 Part D claims and 152 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Mohn, PA-C's credentials? ▼
William Mohn, PA-C's NPI is 1467943100 with credentials PA-C. 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.
- 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.