2026 NPPES data Physician Assistant NPI 1245208230 PA C
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DIANE ABEL WILLIAMS, PA C

Physician Assistant in MILFORD, Michigan. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 321 beneficiaries · Physician Assistant avg: 790
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: DIANE ABEL WILLIAMS, PA C is a Physician Assistant ([object Object]) practicing in MILFORD, Michigan with a Medicare Part D prescribing footprint of 1K claims across 321 beneficiaries — 9% brand-name prescribing .

What stands out: DIANE ABEL WILLIAMS, PA C filed 1,059 Medicare Part D claims in 2023 across MILFORD, Michigan. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

DIANE ABEL WILLIAMS, PA C at a glance

Quality data not reported

NPI registry status

Active

Issued 03/08/2006

NPI 1245208230

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

1,059 34% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Michigan

How Physician Assistant compares to other specialties among Michigan providers

Michigan providers

Physician Assistant share within Michigan

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within Michigan

Specialty board-certification context

Estimated specialty board-certified rate — Physician Assistant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physician Assistant ABMS/AOA estimate

Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

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 is a Physician Assistant provider practicing in MILFORD, Michigan, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA C. NPI: 1245208230. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ABEL WILLIAMS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

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 91% generic by claim count, with an opioid prescribing rate of 1.1%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Physician Assistant is a high-volume specialty nationwide, with 149,975 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

1265 N MILFORD RD
MILFORD, MI 48381

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%
Specialty average (est.)

9% brand-name claims vs 91% 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 / 91% 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.

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.

149,975
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.

Compare Physician Assistant nationally: see state-by-state distribution →

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 91% 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 149,975 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

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