2026 NPPES data Physician Assistant NPI 1508451980 PA
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RITA PETERSON, PA

Physician Assistant in MADISON, 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
811
Medicare Part D claims · 221 beneficiaries · Physician Assistant avg: 790
Generic prescribing
40%
generic claims · 60% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

RITA PETERSON, PA filed 811 Medicare Part D claims in 2023 as a Physician Assistant in MADISON, Wisconsin, prescribing 40% generic.

811
Part D claims, 2023
40%
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.

RITA PETERSON, PA's Medicare Part D volume vs every U.S. prescriber

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

811 Top 27% higher than 73% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 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 RITA PETERSON, PA?

Quality data not reported

NPI registry status

Active

Issued 03/08/2021

NPI 1508451980

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

811 3% 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).

RITA PETERSON, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 451 JUNCTION RD, MADISON, WI, 53717, with a listed phone of (608) 263-5010. NPI 1508451980 was issued on 03/08/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PETERSON 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 811 prescription claims written by this provider, covering 221 Medicare beneficiaries and totaling roughly $605K in drug spend, split 60% brand-name and 40% 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

451 JUNCTION RD
MADISON, WI 53717

Provider Details

NPI 1508451980
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 03/08/2021

Hospital and facility affiliations

Facilities where RITA PETERSON, PA 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.

UNIVERSITY OF WISCONSIN MEDICAL FOUNDATION INC
MADISON, 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 · Brand-heavy

RITA PETERSON, PA — brand share 60.0%
Specialty average (est.)

60% brand-name claims vs 40% generic, on 811 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.

811
Total Claims
$605K
Total Drug Cost
221
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,813
Total Day Supply
53,439
Brand vs Generic
60% brand / 40% generic
Brand Drug Cost
$571K
Generic Drug Cost
$13K

Patient Demographics

Average Patient Age
69.2 years
Avg HCC Risk Score
1.81
Gender Split
60% female / 40% male

Top Prescribed Drugs (Medicare Part D)

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

What RITA PETERSON, PA 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
Levothyroxine Sodium
98
Ozempic
Semaglutide
61
Novolog Flexpen
Insulin Aspart
33
Metformin Hcl
32
Metformin Hcl Er
Metformin Hcl
32
Humalog Kwikpen U-100
Insulin Lispro
26
Trulicity
Dulaglutide
22
Alendronate Sodium
19
Humalog Mix 75-25 Kwikpen
Insulin Lispro Protamin/Lispro
18
Humulin 70/30 Kwikpen
Insulin Nph Hum/Reg Insulin Hm
17

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

Physician Assistant Overview

How RITA PETERSON, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

RITA PETERSON, PA's 811 claims are above 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 PETERSON.

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

Frequently Asked Questions

What is RITA PETERSON, PA's specialty?
RITA PETERSON, PA specializes in Physician Assistant and practices in MADISON, Wisconsin. Credentials: PA.
How much does RITA PETERSON, PA prescribe under Medicare Part D?
In 2023, RITA PETERSON, PA wrote 811 Medicare Part D claims totaling $605K in drug costs for 221 beneficiaries.
Where is RITA PETERSON, PA located?
RITA PETERSON, PA is located at 451 JUNCTION RD, MADISON, WI, 53717. Phone: (608) 263-5010.
What is RITA PETERSON, PA's NPI number?
RITA PETERSON, PA's National Provider Identifier (NPI) is 1508451980, issued on 03/08/2021.
Does RITA PETERSON, PA prescribe more brand-name or generic drugs?
RITA PETERSON, PA's prescribing is 60% brand-name and 40% generic drugs by claim count, with $571K 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 RITA PETERSON, PA prescribe most often?
Based on 2023 Medicare Part D data, RITA PETERSON, PA's most frequently prescribed drugs include Levothyroxine Sodium, Ozempic, Novolog Flexpen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RITA PETERSON, PA accept Medicare?
RITA PETERSON, PA appears in CMS Medicare data with 811 Part D claims and 221 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RITA PETERSON, PA's credentials?
RITA PETERSON, PA's NPI is 1508451980 with credentials PA. 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