NPPES file of Aug 9, 2026

Daniel Carl Schiffner, M.D.

Radiation Oncology Physician · Palo Alto, CA

Daniel Carl Schiffner, M.D. is a radiation oncology physician with a practice address in Palo Alto, California, and NPI 1972791671, issued on Oct 9, 2007. Check the license (California A 97515, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1972791671
Name
Daniel Carl Schiffner
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
A 97515 CA
Self-reported in NPPES; status is on the state search
Practice location
795 EL Camino Real, Palo Alto, CA 94301
Phone
(650) 321-4121
Enumerated
Oct 9, 2007
Record last updated
May 28, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20100910000470); accepts Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 2005
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →

Also registered at 795 EL Camino Real

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

  1. Hamza AbbasiInternal Medicine Physician1821545484
  2. Arman Abdalkhani, MDOtolaryngology Physician1356536130
  3. Sara AbrahamsInternal Medicine Physician1952988354
  4. Nana Efua Adabie, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1437647732
  5. Amy Adams, M.D.Dermatology Physician1679643928
  6. William Adams, DPMFoot & Ankle Surgery Podiatrist1447487830

Verify Daniel Carl Schiffner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A 97515    Check 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.

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

80 Medicare Part D claims for 44 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. Daniel Schiffner80
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl26 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: $789.26

13 payments; by number, the most common kind was food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Daniel Schiffner$789.26
  2. Specialty average$1,897.85

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

Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationPalo Alto, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Daniel Carl Schiffner among 735 radiation oncology physician records in California

Daniel Carl Schiffner, M.D. is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.

  • NPI issued2007 · 45% of these records are older, 43% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2005 · median 2005 among the 545 with a school on file
  • Record last updated2020 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in California

There are 735 radiation oncology physician records in California.

All 735 in California → Every provider in Palo Alto → Radiation Oncology Physician nationwide →

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Robert Lundahl, MDPalo Alto, CA 943011578675724
  2. David Shultz, M.D.Palo Alto, CA 943011396989711
  3. Alexander Chin, MDPalo Alto, CA 943041518385251
  4. Hailey Choi, M.D.Palo Alto, CA 943041386900249
  5. Michael Gensheimer, M.D.Palo Alto, CA 943041407172687
  6. Iris Gibbs, MDPalo Alto, CA 943041407994429
  7. Daniella KlebanerPalo Alto, CA 943041023638269
  8. Susan Knox, M.D.,PH.D.Palo Alto, CA 943041912034240

Common questions

What is Daniel Carl Schiffner, M.D.'s NPI number?

Daniel Carl Schiffner, M.D.'s National Provider Identifier (NPI) is 1972791671, issued on Oct 9, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Daniel Carl Schiffner, M.D. located?

The NPPES record lists a practice address at 795 EL Camino Real, Palo Alto, CA, 94301. Phone: (650) 321-4121. Providers update this record themselves, so call before visiting.

How can I verify Daniel Carl Schiffner, M.D.'s license?

NPPES lists California license number A 97515, as entered by the provider. 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 Daniel Carl Schiffner, M.D. prescribe under Medicare Part D?

In 2024, Daniel Carl Schiffner, M.D. had 80 Medicare Part D claims for 44 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.