NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1245208230 PA C
Verify on CMS → Diane Abel Williams, PA C
Physician Assistant in Milford, Michigan.
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
1K
Medicare Part D claims · 321 beneficiaries · Physician Assistant avg: 790
Generic prescribing
89%
generic claims · 9% 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
Diane Abel Williams, PA C filed 1,059 Medicare Part D claims in 2023 as a Physician Assistant in Milford, Michigan, prescribing 89% generic.
- 1K
- Part D claims, 2023
- 89%
- 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.
Diane Abel Williams, PA C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,059 Top 24% higher than 76% 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 Diane Abel Williams, PA C?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
1,059 34% vs specialty avg
Specialty distribution in Michigan
How Physician Assistant compares to other specialties among Michigan 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).
Diane Abel Williams, PA C appears in the CMS NPPES registry as a Physician Assistant provider holding PA C credentials at 1265 N MILFORD RD, Milford, MI, 48381, with a listed phone of (248) 685-3600. NPI 1245208230 was issued on 03/08/2006.
Medicare Part D records for calendar year 2023 show 1,059 prescription claims written by this provider, covering 321 Medicare beneficiaries and totaling roughly $48K in drug spend, split 9% brand-name and 89% generic by claim count, with an opioid prescribing rate of 1.1%.
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 | 1245208230 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA C |
| Gender | Female |
| NPI Issued | 03/08/2006 |
Hospital and facility affiliations
Facilities where Diane Abel Williams, PA C 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.
Henry Ford Health System
Detroit, MI
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 - Michigan MI-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 ~41K Michigan medical licensees in 2023 - they are NOT specific to Diane Abel Williams, PA C. To verify Diane Abel Williams, PA C's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases
MI-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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Diane Abel Williams, PA C - brand share 9.0%
Physician Assistant average
9% brand-name claims vs 89% generic, on 1,059 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.
1,059
Total Claims
$48K
Total Drug Cost
321
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,117
- Total Day Supply
- 57,930
- Brand vs Generic
- 9% brand / 89% generic
- Brand Drug Cost
- $29K
- Generic Drug Cost
- $19K
- Opioid Claims
- 12 (1.1% rate)
- Antibiotic Claims
- 112
Patient Demographics
- Average Patient Age
- 72.7 years
- Avg HCC Risk Score
- 0.99
- Gender Split
- 77% female / 23% male
- Age Distribution
- <65: 24, 65-74: 168, 75-84: 96, 85+: 33
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Diane Abel Williams, PA C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Rosuvastatin Calcium
Rosuvastatin Calcium
74 claims
- Levothyroxine Sodium
Levothyroxine Sodium
65 claims
- Methylprednisolone
Methylprednisolone
61 claims
- Atorvastatin Calcium
Atorvastatin Calcium
46 claims
- Lisinopril
Lisinopril
43 claims
- Doxycycline Hyclate
Doxycycline Hyclate
39 claims
- Losartan Potassium
Losartan Potassium
38 claims
- Amlodipine Besylate
Amlodipine Besylate
33 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 74 |
| Levothyroxine Sodium | 65 |
| Methylprednisolone | 61 |
| Atorvastatin Calcium | 46 |
| Lisinopril | 43 |
| Doxycycline Hyclate | 39 |
| Losartan Potassium | 38 |
| Amlodipine Besylate | 33 |
| Metformin Hcl | 33 |
| Simvastatin | 28 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Diane Abel Williams, 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
Diane Abel Williams, PA C's 1,059 claims are above the specialty average of 790.
Nearby Physician Assistant Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Abel Williams.
Dr. Hauraa Aalabdulrasul
PA
Detroit, MI
Dr. Kilee Aamodt
PA-C
Muskegon, MI
Dr. Layan Abbasi
PA-C
Ypsilanti, MI
Dr. Veronica Abbo
PA-C
Roseville, MI
Dr. Stephanie Abbott
PA-C
Grand Rapids, MI
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 Michigan 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.
Healthcare Guides
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Frequently Asked Questions
What is Diane Abel Williams, PA C's specialty? ▼
Diane Abel Williams, PA C specializes in Physician Assistant and practices in Milford, Michigan. Credentials: PA C.
How much does Diane Abel Williams, PA C prescribe under Medicare Part D? ▼
In 2023, Diane Abel Williams, PA C wrote 1,059 Medicare Part D claims totaling $48K in drug costs for 321 beneficiaries.
Where is Diane Abel Williams, PA C located? ▼
Diane Abel Williams, PA C is located at 1265 N MILFORD RD, Milford, MI, 48381. Phone: (248) 685-3600.
What is Diane Abel Williams, PA C's NPI number? ▼
Diane Abel Williams, PA C's National Provider Identifier (NPI) is 1245208230, issued on 03/08/2006.
Does Diane Abel Williams, PA C prescribe more brand-name or generic drugs? ▼
Diane Abel Williams, PA C's prescribing is 9% brand-name and 89% generic drugs by claim count, with $29K in brand drug costs.
Does Diane Abel Williams, PA C prescribe opioids? ▼
Yes, Diane Abel Williams, PA C had 12 opioid claims in 2023 with an opioid prescribing rate of 1.1%.
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 Diane Abel Williams, PA C prescribe most often? ▼
Based on 2023 Medicare Part D data, Diane Abel Williams, PA C's most frequently prescribed drugs include Rosuvastatin Calcium, Levothyroxine Sodium, Methylprednisolone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Diane Abel Williams, PA C accept Medicare? ▼
Diane Abel Williams, PA C appears in CMS Medicare data with 1,059 Part D claims and 321 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Diane Abel Williams, PA C's credentials? ▼
Diane Abel Williams, PA C's NPI is 1245208230 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.