2026 NPPES data Physician Assistant NPI 1538721329 PA-C
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ANNE EPLEY BIRTWISTLE, PA-C

Physician Assistant in WAUWATOSA, Wisconsin. 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
527
Medicare Part D claims · 213 beneficiaries · Physician Assistant avg: 790
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ANNE EPLEY BIRTWISTLE, PA-C filed 527 Medicare Part D claims in 2023 as a Physician Assistant in WAUWATOSA, Wisconsin, prescribing 93% generic.

527
Part D claims, 2023
93%
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.

ANNE EPLEY BIRTWISTLE, PA-C's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

527 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 ANNE EPLEY BIRTWISTLE, PA-C?

Quality data not reported

NPI registry status

Active

Issued 07/02/2019

NPI 1538721329

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

527 33% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Wisconsin

How Physician Assistant compares to other specialties among Wisconsin providers

Wisconsin providers

Physician Assistant share within Wisconsin

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

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).

ANNE EPLEY BIRTWISTLE, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 10000 W BLUEMOUND RD, WAUWATOSA, WI, 53226, with a listed phone of (414) 454-8000. NPI 1538721329 was issued on 07/02/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what EPLEY BIRTWISTLE 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 527 prescription claims written by this provider, covering 213 Medicare beneficiaries and totaling roughly $148K in drug spend, split 7% brand-name and 93% generic by claim count. 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

10000 W BLUEMOUND RD
WAUWATOSA, WI 53226

Provider Details

NPI 1538721329
Specialty Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 07/02/2019

Hospital and facility affiliations

Facilities where ANNE EPLEY BIRTWISTLE, 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.

FROEDTERT ANDTHE MEDICAL COLLEGE OF WISCONSIN COMMUNITY PHYSICIANS INC
GERMANTOWN, WI
THE MEDICAL COLLEGE OF WISCONSIN INC
WAUWATOSA, WI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

ANNE EPLEY BIRTWISTLE, PA-C — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 527 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.

527
Total Claims
$148K
Total Drug Cost
213
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
652
Total Day Supply
15,760
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$131K
Generic Drug Cost
$18K
Antibiotic Claims
26

Patient Demographics

Average Patient Age
70.7 years
Avg HCC Risk Score
1.41
Gender Split
63% female / 37% male
Age Distribution
<65: 36, 65-74: 104, 75-84: 53, 85+: 20

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What ANNE EPLEY BIRTWISTLE, PA-C prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Ketoconazole
116
Triamcinolone Acetonide
60
Clobetasol Propionate
48
Fluocinonide
30
Hydrocortisone
24
Clindamycin Phosphate
21
Doxycycline Monohydrate
17
Betamethasone Diprop Augmented
Betamethasone/Propylene Glyc
16
Dupixent Pen
Dupilumab
14
Fluorouracil
14

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Physician Assistant Overview

How ANNE EPLEY BIRTWISTLE, 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

ANNE EPLEY BIRTWISTLE, PA-C's 527 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Wisconsin

Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as EPLEY BIRTWISTLE.

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

Frequently Asked Questions

What is ANNE EPLEY BIRTWISTLE, PA-C's specialty?
ANNE EPLEY BIRTWISTLE, PA-C specializes in Physician Assistant and practices in WAUWATOSA, Wisconsin. Credentials: PA-C.
How much does ANNE EPLEY BIRTWISTLE, PA-C prescribe under Medicare Part D?
In 2023, ANNE EPLEY BIRTWISTLE, PA-C wrote 527 Medicare Part D claims totaling $148K in drug costs for 213 beneficiaries.
Where is ANNE EPLEY BIRTWISTLE, PA-C located?
ANNE EPLEY BIRTWISTLE, PA-C is located at 10000 W BLUEMOUND RD, WAUWATOSA, WI, 53226. Phone: (414) 454-8000.
What is ANNE EPLEY BIRTWISTLE, PA-C's NPI number?
ANNE EPLEY BIRTWISTLE, PA-C's National Provider Identifier (NPI) is 1538721329, issued on 07/02/2019.
Does ANNE EPLEY BIRTWISTLE, PA-C prescribe more brand-name or generic drugs?
ANNE EPLEY BIRTWISTLE, PA-C's prescribing is 7% brand-name and 93% generic drugs by claim count, with $131K in brand drug costs.
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 ANNE EPLEY BIRTWISTLE, PA-C prescribe most often?
Based on 2023 Medicare Part D data, ANNE EPLEY BIRTWISTLE, PA-C's most frequently prescribed drugs include Ketoconazole, Triamcinolone Acetonide, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANNE EPLEY BIRTWISTLE, PA-C accept Medicare?
ANNE EPLEY BIRTWISTLE, PA-C appears in CMS Medicare data with 527 Part D claims and 213 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANNE EPLEY BIRTWISTLE, PA-C's credentials?
ANNE EPLEY BIRTWISTLE, PA-C's NPI is 1538721329 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