2026 NPPES data Hematology & Oncology Physician NPI 1578501847 M.D.
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Priya Kumar, M.D.

Hematology & Oncology Physician in Stillwater, Minnesota. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 11,215 in Hematology & Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 248 beneficiaries · Hematology & Oncology Physician avg: 847
Industry payments
$19.1K
13 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Priya Kumar, M.D. filed 1,329 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in Stillwater, Minnesota.

1K
Part D claims, 2023
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.

Priya Kumar, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,329 Top 21% higher than 79% 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%). This entry sits in this band. 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. 2K+: 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)

Priya Kumar, M.D. 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 Priya Kumar, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/02/2006

NPI 1578501847

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

1,329 57% vs specialty avg

2023 prescription claims

Specialty avg: 847

Specialty distribution in Minnesota

How Hematology & Oncology Physician compares to other specialties among Minnesota providers

Minnesota providers

Largest specialties in Minnesota (% of in-state providers)

Behavior Technician - 11.7%Behavior Technician11.7%Clinical Social Worker - 4.7%Clinical Social Worker4.7%Physical Therapist - 4.1%Physical Therapist4.1%Pharmacist - 3.7%Pharmacist3.7%Student in an Organized Health Care Education/Training Program - 3.4%Student in an Organized Health Care Education/Training Program3.4%Mental Health Counselor - 3.1%Mental Health Counselor3.1%Hematology & Oncology Physician - 0.2%Hematology & Oncology Physician0.2%
Largest specialties in Minnesota (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hematology & Oncology Physician. Verify directly:

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).

Priya Kumar, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 921 GREELEY ST S, Stillwater, MN, 55082, with a listed phone of (651) 439-1234. NPI 1578501847 was issued on 06/02/2006. 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 1,329 prescription claims written by this provider, covering 248 Medicare beneficiaries and totaling roughly $2.6 million in drug spend. 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.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 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

921 GREELEY ST S
Stillwater, MN 55082

Provider Details

NPI 1578501847
Specialty Hematology & Oncology Physician
Credentials M.D.
Gender Female
NPI Issued 06/02/2006

Hospital and facility affiliations

Facilities where Priya Kumar, M.D. 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.

Group Health Plan Inc
Saint Paul, MN

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 Priya Kumar, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$19.1K

Largest payer

Daiichi Sankyo Inc.

Most common payment type

Consulting Fee

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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,329
Total Claims
$2.6M
Total Drug Cost
248
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,430
Total Day Supply
68,122
Generic Drug Cost
$435K
Antibiotic Claims
28

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
1.53
Gender Split
73% female / 27% male

Top Prescribed Drugs (Medicare Part D)

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

What Priya Kumar, M.D. 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
Tamoxifen Citrate
145
Anastrozole
141
Letrozole
87
Prednisone
66
Abiraterone Acetate
58
Xarelto
Rivaroxaban
57
Hydroxyurea
56
Eliquis
Apixaban
52
Prochlorperazine Maleate
46
Gabapentin
45

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

Hematology & Oncology Physician Overview

How Priya Kumar, M.D. fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

Priya Kumar, M.D.'s 1,329 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Minnesota

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

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Minnesota medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Hematology & Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Priya Kumar, M.D.'s specialty?
Priya Kumar, M.D. specializes in Hematology & Oncology Physician and practices in Stillwater, Minnesota. Credentials: M.D..
How much does Priya Kumar, M.D. prescribe under Medicare Part D?
In 2023, Priya Kumar, M.D. wrote 1,329 Medicare Part D claims totaling $2.6M in drug costs for 248 beneficiaries.
Where is Priya Kumar, M.D. located?
Priya Kumar, M.D. is located at 921 GREELEY ST S, Stillwater, MN, 55082. Phone: (651) 439-1234.
What is Priya Kumar, M.D.'s NPI number?
Priya Kumar, M.D.'s National Provider Identifier (NPI) is 1578501847, issued on 06/02/2006.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Priya Kumar, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Priya Kumar, M.D.'s most frequently prescribed drugs include Tamoxifen Citrate, Anastrozole, Letrozole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Priya Kumar, M.D. accept Medicare?
Priya Kumar, M.D. appears in CMS Medicare data with 1,329 Part D claims and 248 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Priya Kumar, M.D.'s credentials?
Priya Kumar, M.D.'s NPI is 1578501847 with credentials M.D.. 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

Compiled from official public sources by the PlainDoctor editorial team.