2026 NPPES data Hospitalist Physician NPI 1891948089 D.O.
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ASHWIN UTTAM, D.O.

Hospitalist Physician in WAUKESHA, 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
805
Medicare Part D claims · 92 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
72%
generic claims · 28% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$18.96
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ASHWIN UTTAM, D.O. filed 805 Medicare Part D claims in 2023 as a Hospitalist Physician in WAUKESHA, Wisconsin, prescribing 72% generic.

805
Part D claims, 2023
72%
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.

ASHWIN UTTAM, D.O.'s Medicare Part D volume vs every U.S. prescriber

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

805 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

Board certification likely (heuristic — not verified)

ASHWIN UTTAM, D.O. 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 ASHWIN UTTAM, D.O.?

Quality data not reported

NPI registry status

Active

Issued 10/31/2008

NPI 1891948089

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

805 9% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Wisconsin

How Hospitalist Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Hospitalist Physician share within Wisconsin

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within Wisconsin

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Hospitalist 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).

ASHWIN UTTAM, D.O. appears in the CMS NPPES registry as a Hospitalist Physician provider holding D.O. credentials at 725 AMERICAN AVE RM 2036, WAUKESHA, WI, 53188, with a listed phone of (262) 928-5400. NPI 1891948089 was issued on 10/31/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what UTTAM 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 805 prescription claims written by this provider, covering 92 Medicare beneficiaries and totaling roughly $47K in drug spend, split 28% brand-name and 72% 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

725 AMERICAN AVE RM 2036
WAUKESHA, WI 53188

Provider Details

NPI 1891948089
Specialty Hospitalist Physician
Credentials D.O.
Gender Male
NPI Issued 10/31/2008

Hospital and facility affiliations

Facilities where ASHWIN UTTAM, D.O. 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.

ASCENSION MEDICAL GROUP-SOUTHEAST WISCONSIN INC
BROOKFIELD, 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).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for ASHWIN UTTAM, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$19

Largest payer

Boston Scientific Corporation

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

ASHWIN UTTAM, D.O. — brand share 28.0%
Specialty average (est.)

28% brand-name claims vs 72% generic, on 805 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.

805
Total Claims
$47K
Total Drug Cost
92
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
884
Total Day Supply
21,092
Brand vs Generic
28% brand / 72% generic
Brand Drug Cost
$30K
Generic Drug Cost
$18K
Antibiotic Claims
40

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
3.10
Gender Split
58% female / 42% male
Age Distribution
<65: 13, 65-74: 38, 75-84: 24, 85+: 17

Top Prescribed Drugs (Medicare Part D)

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

What ASHWIN UTTAM, D.O. 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
Furosemide
91
Atorvastatin Calcium
62
Levothyroxine Sodium
37
Potassium Chloride
35
Doxazosin Mesylate
33
Prednisone
31
Amlodipine Besylate
27
Clopidogrel
Clopidogrel Bisulfate
25
Eliquis
Apixaban
25
Xarelto
Rivaroxaban
23

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

Hospitalist Physician Overview

How ASHWIN UTTAM, D.O. fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

ASHWIN UTTAM, D.O.'s 805 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in Wisconsin

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

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

Frequently Asked Questions

What is ASHWIN UTTAM, D.O.'s specialty?
ASHWIN UTTAM, D.O. specializes in Hospitalist Physician and practices in WAUKESHA, Wisconsin. Credentials: D.O..
How much does ASHWIN UTTAM, D.O. prescribe under Medicare Part D?
In 2023, ASHWIN UTTAM, D.O. wrote 805 Medicare Part D claims totaling $47K in drug costs for 92 beneficiaries.
Where is ASHWIN UTTAM, D.O. located?
ASHWIN UTTAM, D.O. is located at 725 AMERICAN AVE RM 2036, WAUKESHA, WI, 53188. Phone: (262) 928-5400.
What is ASHWIN UTTAM, D.O.'s NPI number?
ASHWIN UTTAM, D.O.'s National Provider Identifier (NPI) is 1891948089, issued on 10/31/2008.
Does ASHWIN UTTAM, D.O. prescribe more brand-name or generic drugs?
ASHWIN UTTAM, D.O.'s prescribing is 28% brand-name and 72% generic drugs by claim count, with $30K in brand drug costs.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does ASHWIN UTTAM, D.O. prescribe most often?
Based on 2023 Medicare Part D data, ASHWIN UTTAM, D.O.'s most frequently prescribed drugs include Furosemide, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ASHWIN UTTAM, D.O. accept Medicare?
ASHWIN UTTAM, D.O. appears in CMS Medicare data with 805 Part D claims and 92 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ASHWIN UTTAM, D.O.'s credentials?
ASHWIN UTTAM, D.O.'s NPI is 1891948089 with credentials D.O.. 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