2026 NPPES data Child & Adolescent Psychiatry Physician NPI 1639731177 MD
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SAMUEL WARN, MD

Child & Adolescent Psychiatry Physician 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
57
Medicare Part D claims · Child & Adolescent Psychiatry Physician avg: 600
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

SAMUEL WARN, MD filed 57 Medicare Part D claims in 2023 as a Child & Adolescent Psychiatry Physician in MADISON, Wisconsin, prescribing 77% generic.

57
Part D claims, 2023
77%
generic prescribing
Likely
board-certified (heuristic)

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.

SAMUEL WARN, MD's Medicare Part D volume vs every U.S. prescriber

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

57 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 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

Board certification likely (heuristic — not verified)

SAMUEL WARN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about SAMUEL WARN, MD?

Quality data not reported

NPI registry status

Active

Issued 07/04/2019

NPI 1639731177

Primary specialty

Child & Adolescent Psychiatry Physician

Mid-sized

6,160 US NPIs in this specialty

Medicare Part D claims

57 90% vs specialty avg

2023 prescription claims

Specialty avg: 600

Specialty distribution in Wisconsin

How Child & Adolescent Psychiatry Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Child & Adolescent Psychiatry Physician share within Wisconsin

1. Child & Adolescent Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Child & Adolescent Psychiatry Physician share within Wisconsin

Specialty board-certification context

Estimated specialty board-certified rate — Child & Adolescent Psychiatry Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Child & Adolescent Psychiatry Physician ABMS/AOA estimate

Est. board-certified rate (Child & Adolescent Psychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Child & Adolescent Psychiatry Physician) — 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).

SAMUEL WARN, MD appears in the CMS NPPES registry as a Child & Adolescent Psychiatry Physician provider holding MD credentials at 6001 RESEARCH PARK BLVD, MADISON, WI, 53719, with a listed phone of (608) 232-3171. NPI 1639731177 was issued on 07/04/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WARN 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 57 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $101K in drug spend, split 23% brand-name and 77% 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.

Child & Adolescent Psychiatry Physician is a mid-sized specialty nationwide, with 6,160 enrolled providers across 54 states and an average of 600 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

6001 RESEARCH PARK BLVD
MADISON, WI 53719

Provider Details

NPI 1639731177
Specialty Child & Adolescent Psychiatry Physician
Credentials MD
Gender Male
NPI Issued 07/04/2019

Hospital and facility affiliations

Facilities where SAMUEL WARN, MD 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 · Typical

SAMUEL WARN, MD — brand share 23.0%
Specialty average (est.)

23% brand-name claims vs 77% generic, on 57 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.

57
Total Claims
$101K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
57
Total Day Supply
1,604
Brand vs Generic
23% brand / 77% generic
Brand Drug Cost
$100K
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
52.4 years
Avg HCC Risk Score
0.95

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Ingrezza
Valbenazine Tosylate
13
Venlafaxine Hcl Er
Venlafaxine Hcl
11

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

Child & Adolescent Psychiatry Physician Overview

How SAMUEL WARN, MD fits within the Child & Adolescent Psychiatry Physician landscape nationally.

6,160
Child & Adolescent Psychiatry Physician Providers in US
54
States with Child & Adolescent Psychiatry Physician
600
Avg Claims per Provider

SAMUEL WARN, MD's 57 claims are below the specialty average of 600.

Nearby Child & Adolescent Psychiatry Physician Providers in Wisconsin

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

Compare Child & Adolescent Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SAMUEL WARN, MD's specialty?
SAMUEL WARN, MD specializes in Child & Adolescent Psychiatry Physician and practices in MADISON, Wisconsin. Credentials: MD.
How much does SAMUEL WARN, MD prescribe under Medicare Part D?
In 2023, SAMUEL WARN, MD wrote 57 Medicare Part D claims totaling $101K in drug costs for N/A beneficiaries.
Where is SAMUEL WARN, MD located?
SAMUEL WARN, MD is located at 6001 RESEARCH PARK BLVD, MADISON, WI, 53719. Phone: (608) 232-3171.
What is SAMUEL WARN, MD's NPI number?
SAMUEL WARN, MD's National Provider Identifier (NPI) is 1639731177, issued on 07/04/2019.
Does SAMUEL WARN, MD prescribe more brand-name or generic drugs?
SAMUEL WARN, MD's prescribing is 23% brand-name and 77% generic drugs by claim count, with $100K in brand drug costs.
How many Child & Adolescent Psychiatry Physician providers are there in the US?
There are 6,160 Child & Adolescent Psychiatry Physician providers across 54 states in the US. The average Child & Adolescent Psychiatry Physician provider writes 600 Medicare Part D claims per year.
What drugs does SAMUEL WARN, MD prescribe most often?
Based on 2023 Medicare Part D data, SAMUEL WARN, MD's most frequently prescribed drugs include Ingrezza, Venlafaxine Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SAMUEL WARN, MD accept Medicare?
SAMUEL WARN, MD appears in CMS Medicare data with 57 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SAMUEL WARN, MD's credentials?
SAMUEL WARN, MD's NPI is 1639731177 with credentials MD. 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