NPPES file of Aug 9, 2026

Karen E. Tye, MD

Radiation Oncology Physician · San Diego, CA

Karen E. Tye, MD is a radiation oncology physician with a practice address in San Diego, California, and NPI 1225490147, issued on Mar 22, 2016. Check the license (California A156529, 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
1225490147
Name
Karen E. Tye
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
A156529 CA
Self-reported in NPPES; status is on the state search
Practice location
200 W Arbor Dr, San Diego, CA 92103
Phone
(800) 926-8273
Enumerated
Mar 22, 2016
Record last updated
Mar 20, 2023
Fax
(888) 539-8781
Medicare enrollment
Enrolled (PECOS I20230308002361); accepts Medicare assignment
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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Also registered at 200 W Arbor Dr

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

  1. Alison A'Court, MDAnesthesiology Physician1912218199
  2. Benjamin Abbadessa, M.D.Colon & Rectal Surgery Physician1255593612
  3. Geraldine Abcede, RNCertified Registered Nurse Anesthetist1982384046
  4. Joseph Abdelmalek, M.DNephrology Physician1740485531
  5. Kristy AbelCertified Registered Nurse Anesthetist1962113035
  6. Paula Abeleda, NPFamily Nurse Practitioner1558945022

Verify Karen E. Tye in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A156529
    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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46% more Medicare Part D claims than the average radiation oncology physician in 2024

195 Medicare Part D claims for 99 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Karen Tye195
  2. Specialty average134

Most prescribed

  1. Mometasone Furoate83 claims
  2. Tamsulosin Hcl34 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.

Bills Medicare through one group practice

  1. Regents OF The University OF CaliforniaEncinitas, CA

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

Karen E. Tye among 735 radiation oncology physician records in California

Karen E. Tye, MD 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 2016, is newer than 84% of them.

  • NPI issued2016 · 84% of these records are older, 13% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2016 · median 2005 among the 545 with a school on file
  • Record last updated2023 · 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.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Donald Fuller, M.D.San Diego, CA 921031285632711
  2. Adam Horn, M.D.San Diego, CA 921031982979019
  3. Tahir Ijaz, M.D.San Diego, CA 921031225036742
  4. Anuradha Koka, M.D.San Diego, CA 921031538153549
  5. Jyoti Mayadev, M.DSan Diego, CA 921031902906902
  6. Arno Mundt, M.D.San Diego, CA 921031790708808
  7. Chika Nwachukwu, MDSan Diego, CA 921031194138263
  8. Parag Sanghvi, M.D., M..S.P.H.San Diego, CA 921031801005152

Common questions

What is Karen E. Tye, MD's NPI number?

Karen E. Tye, MD's National Provider Identifier (NPI) is 1225490147, issued on Mar 22, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Karen E. Tye, MD located?

The NPPES record lists a practice address at 200 W Arbor Dr, San Diego, CA, 92103. Phone: (800) 926-8273. Providers update this record themselves, so call before visiting.

How can I verify Karen E. Tye, MD's license?

NPPES lists California license number A156529, 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 Karen E. Tye, MD prescribe under Medicare Part D?

In 2024, Karen E. Tye, MD had 195 Medicare Part D claims for 99 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.

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.