2026 NPPES data Internal Medicine Physician NPI 1164647376 D.O.
Verify on CMS →

AMAR AMBARDEKAR, D.O.

Internal Medicine Physician 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
12K
Medicare Part D claims · 752 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: AMAR AMBARDEKAR, D.O. is a Internal Medicine Physician ([object Object]) practicing in MILWAUKEE, Wisconsin with a Medicare Part D prescribing footprint of 12K claims across 752 beneficiaries — 13% brand-name prescribing .

What stands out: AMAR AMBARDEKAR, D.O. filed 12,227 Medicare Part D claims in 2023 across MILWAUKEE, Wisconsin. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

AMAR AMBARDEKAR, 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).

AMAR AMBARDEKAR, D.O. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/13/2007

NPI 1164647376

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

12,227 350% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Wisconsin

How Internal Medicine Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Internal Medicine Physician share within Wisconsin

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

Specialty board-certification context

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

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

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

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

AMAR AMBARDEKAR, D.O. is a Internal Medicine Physician provider practicing in MILWAUKEE, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1164647376. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

AMAR AMBARDEKAR, D.O. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding D.O. credentials at 3003 W GOOD HOPE RD, MILWAUKEE, WI, 53209, with a listed phone of (414) 352-3100. NPI 1164647376 was issued on 04/13/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AMBARDEKAR 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 12,227 prescription claims written by this provider, covering 752 Medicare beneficiaries and totaling roughly $1.5 million in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 0.7%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

3003 W GOOD HOPE RD
MILWAUKEE, WI 53209

Provider Details

NPI 1164647376
Specialty Internal Medicine Physician
Credentials D.O.
Gender Male
NPI Issued 04/13/2007

Hospital and facility affiliations

Facilities where AMAR AMBARDEKAR, 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.

AAMG REACH PLLC
KENOSHA, 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

AMAR AMBARDEKAR, D.O. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 12,227 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.

12,227
Total Claims
$1.5M
Total Drug Cost
752
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
27,979
Total Day Supply
820,971
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$1.3M
Generic Drug Cost
$201K
Opioid Claims
88 (0.7% rate)
Antibiotic Claims
95

Patient Demographics

Average Patient Age
73.4 years
Avg HCC Risk Score
1.51
Gender Split
41% female / 59% male
Age Distribution
<65: 76, 65-74: 346, 75-84: 258, 85+: 72

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
1,011
Amlodipine Besylate
778
Losartan Potassium
607
Hydrochlorothiazide
563
Lisinopril
430
Metoprolol Succinate
353
Metformin Hcl
312
Omeprazole
275
Levothyroxine Sodium
269
Allopurinol
263

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

Internal Medicine Physician Overview

How AMAR AMBARDEKAR, D.O. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

AMAR AMBARDEKAR, D.O.'s 12,227 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Wisconsin

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is AMAR AMBARDEKAR, D.O.'s specialty?
AMAR AMBARDEKAR, D.O. specializes in Internal Medicine Physician and practices in MILWAUKEE, Wisconsin. Credentials: D.O..
How much does AMAR AMBARDEKAR, D.O. prescribe under Medicare Part D?
In 2023, AMAR AMBARDEKAR, D.O. wrote 12,227 Medicare Part D claims totaling $1.5M in drug costs for 752 beneficiaries.
Where is AMAR AMBARDEKAR, D.O. located?
AMAR AMBARDEKAR, D.O. is located at 3003 W GOOD HOPE RD, MILWAUKEE, WI, 53209. Phone: (414) 352-3100.
What is AMAR AMBARDEKAR, D.O.'s NPI number?
AMAR AMBARDEKAR, D.O.'s National Provider Identifier (NPI) is 1164647376, issued on 04/13/2007.
Does AMAR AMBARDEKAR, D.O. prescribe more brand-name or generic drugs?
AMAR AMBARDEKAR, D.O.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $1.3M in brand drug costs.
Does AMAR AMBARDEKAR, D.O. prescribe opioids?
Yes, AMAR AMBARDEKAR, D.O. had 88 opioid claims in 2023 with an opioid prescribing rate of 0.7%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does AMAR AMBARDEKAR, D.O. prescribe most often?
Based on 2023 Medicare Part D data, AMAR AMBARDEKAR, D.O.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AMAR AMBARDEKAR, D.O. accept Medicare?
AMAR AMBARDEKAR, D.O. appears in CMS Medicare data with 12,227 Part D claims and 752 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AMAR AMBARDEKAR, D.O.'s credentials?
AMAR AMBARDEKAR, D.O.'s NPI is 1164647376 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