Registry data as of Aug 27, 2026

Seth Rosenthal, M.D.

Radiation Oncology Physician · Sacramento, CA

Seth Rosenthal, M.D. is a radiation oncology physician with a practice address in Sacramento, California, and NPI 1881690584, issued on Jun 27, 2005. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1881690584
Name
Seth Rosenthal
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
Practice location
2801 K St, Sacramento, CA 95816
Phone
(877) 515-0053
Enumerated
Jun 27, 2005
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2801 K St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Farah Ajmal, M.D.Internal Medicine Physician1487672374
  2. Ellis Andras, MDRadiation Oncology Physician1306842299
  3. Letizia Antonietti, M.D.Specialist1881866341
  4. Maheswari Balasubramanian, MDInternal Medicine Physician1235217357
  5. Maxine Barish-Wreden, MDInternal Medicine Physician1730190471
  6. Maude Blundell, MSGenetic Counselor (M.S.)1083152177

Verify Seth Rosenthal in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

40% more Medicare Part D claims than the average radiation oncology physician in 2024

189 Medicare Part D claims for 65 beneficiaries, against an average of 135 among the 4,225 providers of this specialty who prescribed in Part D.

  1. Seth Rosenthal189
  2. Specialty average135

Most prescribed

  1. Tamsulosin Hcl107 claims
  2. Bicalutamide50 claims
  3. Venlafaxine Hcl Er11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $116.07

1 payment, mostly food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 2,851 providers of this specialty with any payment received $1,903.20 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Seth Rosenthal$116.07
  2. Specialty average$1,903.20

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. Sutter Valley Medical FoundationRoseville, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Radiation Oncology Physician providers in California

There are 643 radiation oncology physician records in California.

Other radiation oncology physician records in California

  1. Christina Abel, NURSE PRACTITIONEROrange, CA1033638911
  2. Roy Abendroth, MDSan Francisco, CA1811988421
  3. Sunil Advani, M.D.La Jolla, CA1669649844
  4. Faisal Ahmed, MDStanford, CA1427314855
  5. Eugene Ahn, MDSimi Valley, CA1912999533
  6. Raag Airan, MDStanford, CA1912223017
  7. Zahora Ally, MDAntioch, CA1306839915
  8. Munther Alqaisi, M.D.San Bernardino, CA1356454300
  9. Farhan Amanullah, MDStanford, CA1548528813
  10. Arya Amini, M.D.Duarte, CA1487910774

Common questions

What is Seth Rosenthal, M.D.'s NPI number?

Seth Rosenthal, M.D.'s National Provider Identifier (NPI) is 1881690584, issued on Jun 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Seth Rosenthal, M.D. located?

The NPPES record lists a practice address at 2801 K St, Sacramento, CA, 95816. Phone: (877) 515-0053. Providers update this record themselves, so call before visiting.

How can I verify Seth Rosenthal, M.D.'s license?

Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Seth Rosenthal, M.D. prescribe under Medicare Part D?

In 2024, Seth Rosenthal, M.D. had 189 Medicare Part D claims for 65 beneficiaries; the average among radiation oncology physician prescribers was 135. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.