2026 NPPES data Internal Medicine Physician NPI 1144271990 MD
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PUNIT KUMAR, MD

Internal Medicine Physician in FOND DU LAC, 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
598
Medicare Part D claims · 51 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

PUNIT KUMAR, MD filed 598 Medicare Part D claims in 2023 as a Internal Medicine Physician in FOND DU LAC, Wisconsin, prescribing 93% generic.

598
Part D claims, 2023
93%
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.

PUNIT KUMAR, MD's Medicare Part D volume vs every U.S. prescriber

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

598 Top 34% higher than 66% 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%). This entry sits in this band. 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)

PUNIT KUMAR, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 PUNIT KUMAR, MD?

Quality data not reported

NPI registry status

Active

Issued 05/15/2006

NPI 1144271990

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

598 78% 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).

PUNIT KUMAR, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 420 E DIVISION ST, FOND DU LAC, WI, 54935, with a listed phone of (920) 926-8420. NPI 1144271990 was issued on 05/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KUMAR 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 598 prescription claims written by this provider, covering 51 Medicare beneficiaries and totaling roughly $41K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 33.4%. 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

420 E DIVISION ST
FOND DU LAC, WI 54935

Provider Details

NPI 1144271990
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 05/15/2006

Hospital and facility affiliations

Facilities where PUNIT KUMAR, 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.

AGNESIAN HEALTHCARE INC
MAYVILLE, WI
BELLIN MEMORIAL HOSPITAL INC
GREEN BAY, 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 · Generic-heavy

PUNIT KUMAR, MD — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 598 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.

598
Total Claims
$41K
Total Drug Cost
51
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,136
Total Day Supply
32,354
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$24K
Generic Drug Cost
$17K
Opioid Claims
200 (33.4% rate)

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
2.83
Gender Split
45% female / 55% male

Top Prescribed Drugs (Medicare Part D)

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

What PUNIT KUMAR, MD 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
Oxycodone Hcl
52
Morphine Sulfate
48
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
24
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
23
Lorazepam
19
Losartan Potassium
16
Fentanyl
15
Pregabalin
15
Atorvastatin Calcium
14
Metoprolol Tartrate
14

* 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 PUNIT KUMAR, MD 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

PUNIT KUMAR, MD's 598 claims are below 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 KUMAR.

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

Frequently Asked Questions

What is PUNIT KUMAR, MD's specialty?
PUNIT KUMAR, MD specializes in Internal Medicine Physician and practices in FOND DU LAC, Wisconsin. Credentials: MD.
How much does PUNIT KUMAR, MD prescribe under Medicare Part D?
In 2023, PUNIT KUMAR, MD wrote 598 Medicare Part D claims totaling $41K in drug costs for 51 beneficiaries.
Where is PUNIT KUMAR, MD located?
PUNIT KUMAR, MD is located at 420 E DIVISION ST, FOND DU LAC, WI, 54935. Phone: (920) 926-8420.
What is PUNIT KUMAR, MD's NPI number?
PUNIT KUMAR, MD's National Provider Identifier (NPI) is 1144271990, issued on 05/15/2006.
Does PUNIT KUMAR, MD prescribe more brand-name or generic drugs?
PUNIT KUMAR, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $24K in brand drug costs.
Does PUNIT KUMAR, MD prescribe opioids?
Yes, PUNIT KUMAR, MD had 200 opioid claims in 2023 with an opioid prescribing rate of 33.4%.
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 PUNIT KUMAR, MD prescribe most often?
Based on 2023 Medicare Part D data, PUNIT KUMAR, MD's most frequently prescribed drugs include Oxycodone Hcl, Morphine Sulfate, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PUNIT KUMAR, MD accept Medicare?
PUNIT KUMAR, MD appears in CMS Medicare data with 598 Part D claims and 51 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PUNIT KUMAR, MD's credentials?
PUNIT KUMAR, MD's NPI is 1144271990 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