2026 NPPES data Physician Assistant NPI 1356570113 P.A.
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Adam Stillo, P.A.

Physician Assistant in Milwaukee, 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
2K
Medicare Part D claims · 498 beneficiaries · Physician Assistant avg: 790
Generic prescribing
99%
generic claims · 1% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

Adam Stillo, P.A. filed 2,118 Medicare Part D claims in 2023 as a Physician Assistant in Milwaukee, Wisconsin, prescribing 99% generic.

2K
Part D claims, 2023
99%
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.

Adam Stillo, P.A.'s Medicare Part D volume vs every U.S. prescriber

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

2,118 Top 15% higher than 85% 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%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 Adam Stillo, P.A.?

Quality data not reported

NPI registry status

Active

Issued 07/14/2009

NPI 1356570113

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

2,118 168% 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).

Adam Stillo, P.A. appears in the CMS NPPES registry as a Physician Assistant provider holding P.A. credentials at 2901 W KINNICKINNIC RIVER PKWY, Milwaukee, WI, 53215, with a listed phone of (414) 384-6700. NPI 1356570113 was issued on 07/14/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Stillo 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 2,118 prescription claims written by this provider, covering 498 Medicare beneficiaries and totaling roughly $29K in drug spend, split 1% brand-name and 99% generic by claim count, with an opioid prescribing rate of 14.9%. 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

2901 W KINNICKINNIC RIVER PKWY
Milwaukee, WI 53215

Provider Details

NPI 1356570113
Specialty Physician Assistant
Credentials P.A.
Gender Male
NPI Issued 07/14/2009

Hospital and facility affiliations

Facilities where Adam Stillo, P.A. 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.

Holland Community Hospital
★★★★★ 5/5
Holland, MI
Acute Care Hospitals
CMS CCN: 230072

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

Adam Stillo, P.A. — brand share 1.0%
Specialty average (est.)

1% brand-name claims vs 99% generic, on 2,118 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.

2,118
Total Claims
$29K
Total Drug Cost
498
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,276
Total Day Supply
43,883
Brand vs Generic
1% brand / 99% generic
Brand Drug Cost
$9K
Generic Drug Cost
$20K
Opioid Claims
316 (14.9% rate)
Antibiotic Claims
289

Patient Demographics

Average Patient Age
73.3 years
Avg HCC Risk Score
0.66
Gender Split
57% female / 43% male

Top Prescribed Drugs (Medicare Part D)

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

What Adam Stillo, P.A. 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
Celecoxib
425
Meloxicam
425
Cyclobenzaprine Hcl
321
Pregabalin
305
Oxycodone Hcl
289
Cephalexin
224
Amoxicillin
52
Tramadol Hcl
23
Xarelto
Rivaroxaban
15
Clindamycin Hcl
13

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

Physician Assistant Overview

How Adam Stillo, P.A. fits within the Physician Assistant landscape nationally.

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

Adam Stillo, P.A.'s 2,118 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 Stillo.

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

Frequently Asked Questions

What is Adam Stillo, P.A.'s specialty?
Adam Stillo, P.A. specializes in Physician Assistant and practices in Milwaukee, Wisconsin. Credentials: P.A..
How much does Adam Stillo, P.A. prescribe under Medicare Part D?
In 2023, Adam Stillo, P.A. wrote 2,118 Medicare Part D claims totaling $29K in drug costs for 498 beneficiaries.
Where is Adam Stillo, P.A. located?
Adam Stillo, P.A. is located at 2901 W KINNICKINNIC RIVER PKWY, Milwaukee, WI, 53215. Phone: (414) 384-6700.
What is Adam Stillo, P.A.'s NPI number?
Adam Stillo, P.A.'s National Provider Identifier (NPI) is 1356570113, issued on 07/14/2009.
Does Adam Stillo, P.A. prescribe more brand-name or generic drugs?
Adam Stillo, P.A.'s prescribing is 1% brand-name and 99% generic drugs by claim count, with $9K in brand drug costs.
Does Adam Stillo, P.A. prescribe opioids?
Yes, Adam Stillo, P.A. had 316 opioid claims in 2023 with an opioid prescribing rate of 14.9%.
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 Adam Stillo, P.A. prescribe most often?
Based on 2023 Medicare Part D data, Adam Stillo, P.A.'s most frequently prescribed drugs include Celecoxib, Meloxicam, Cyclobenzaprine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Adam Stillo, P.A. accept Medicare?
Adam Stillo, P.A. appears in CMS Medicare data with 2,118 Part D claims and 498 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Adam Stillo, P.A.'s credentials?
Adam Stillo, P.A.'s NPI is 1356570113 with credentials P.A.. 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