NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1760648158 PA-C
Verify on CMS → John Ashton, PA-C
Physician Assistant in Chester, 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 150,974 in 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
2K
Medicare Part D claims · 353 beneficiaries · Physician Assistant avg: 790
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Ashton, PA-C filed 2,146 Medicare Part D claims in 2023 as a Physician Assistant in Chester, Pennsylvania, prescribing 85% generic.
- 2K
- Part D claims, 2023
- 85%
- generic prescribing
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.
John Ashton, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,146 Top 15% higher than 85% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about John Ashton, PA-C?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
2,146 172% vs specialty avg
Specialty distribution in Pennsylvania
How Physician Assistant compares to other specialties among Pennsylvania 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 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).
John Ashton, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 1 MEDICAL CENTER BLVD, Chester, PA, 19013, with a listed phone of (610) 447-6788. NPI 1760648158 was issued on 08/05/2008.
Medicare Part D records for calendar year 2023 show 2,146 prescription claims written by this provider, covering 353 Medicare beneficiaries and totaling roughly $184K in drug spend, split 14% brand-name and 85% generic by claim count, with an opioid prescribing rate of 1.5%.
Physician Assistant is a high-volume specialty nationwide, with 150,974 enrolled providers across 56 states and an average of 790 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
Provider Details
| NPI | 1760648158 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA-C |
| Gender | Male |
| NPI Issued | 08/05/2008 |
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 John Ashton, PA-C. To verify John Ashton, PA-C'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
John Ashton, PA-C - brand share 14.0%
Physician Assistant average
14% brand-name claims vs 85% generic, on 2,146 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.
2,146
Total Claims
$184K
Total Drug Cost
353
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,305
- Total Day Supply
- 124,965
- Brand vs Generic
- 14% brand / 85% generic
- Brand Drug Cost
- $143K
- Generic Drug Cost
- $40K
- Opioid Claims
- 33 (1.5% rate)
- Antibiotic Claims
- 44
Patient Demographics
- Average Patient Age
- 70.1 years
- Avg HCC Risk Score
- 1.46
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 75, 65-74: 155, 75-84: 93, 85+: 30
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Ashton, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
217 claims
- Omeprazole
Omeprazole
134 claims
- Amlodipine Besylate
Amlodipine Besylate
128 claims
- Metoprolol Succinate 83
Metoprolol Succinate
83 claims
- Lisinopril 81
Lisinopril
81 claims
- Fluticasone Propio… 67
Fluticasone Propionate
67 claims
- Levothyroxine Sodium 60
Levothyroxine Sodium
60 claims
- Hydrochlorothiazide 54
Hydrochlorothiazide
54 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 217 |
| Omeprazole | 134 |
| Amlodipine Besylate | 128 |
| Metoprolol Succinate | 83 |
| Lisinopril | 81 |
| Fluticasone Propionate | 67 |
| Levothyroxine Sodium | 60 |
| Hydrochlorothiazide | 54 |
| Gabapentin | 50 |
| Metformin Hcl | 47 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How John Ashton, PA-C fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
John Ashton, PA-C's 2,146 claims are above the specialty average of 790.
Nearby Physician Assistant Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Ashton.
Matthew Abad
Lansdowne, PA
Dr. Ariane Abadi
PA-C
Philadelphia, PA
Dr. Rama Abbireddy
PA
Bethlehem, PA
Dr. Marianne Abdalah
PA
Sewickley, PA
Dr. Safiyya Abdul-Ghani
PA
Oaks, PA
Compare Physician Assistant nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Pennsylvania medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is John Ashton, PA-C's specialty? ▼
John Ashton, PA-C specializes in Physician Assistant and practices in Chester, Pennsylvania. Credentials: PA-C.
How much does John Ashton, PA-C prescribe under Medicare Part D? ▼
In 2023, John Ashton, PA-C wrote 2,146 Medicare Part D claims totaling $184K in drug costs for 353 beneficiaries.
Where is John Ashton, PA-C located? ▼
John Ashton, PA-C is located at 1 MEDICAL CENTER BLVD, Chester, PA, 19013. Phone: (610) 447-6788.
What is John Ashton, PA-C's NPI number? ▼
John Ashton, PA-C's National Provider Identifier (NPI) is 1760648158, issued on 08/05/2008.
Does John Ashton, PA-C prescribe more brand-name or generic drugs? ▼
John Ashton, PA-C's prescribing is 14% brand-name and 85% generic drugs by claim count, with $143K in brand drug costs.
Does John Ashton, PA-C prescribe opioids? ▼
Yes, John Ashton, PA-C had 33 opioid claims in 2023 with an opioid prescribing rate of 1.5%.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does John Ashton, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, John Ashton, PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Omeprazole, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Ashton, PA-C accept Medicare? ▼
John Ashton, PA-C appears in CMS Medicare data with 2,146 Part D claims and 353 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Ashton, PA-C's credentials? ▼
John Ashton, PA-C's NPI is 1760648158 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 (2023). 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 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
Compiled from official public sources by the PlainDoctor editorial team.
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.