Theodore D. Masek, MD
Radiation Oncology Physician · Palm Desert, CA
Theodore D. Masek, MD is a radiation oncology physician with a practice address in Palm Desert, California, and NPI 1720073935, issued on Sep 14, 2005. Check the license (California A39531, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Theodore D. Masek
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A39531 CA
Self-reported in NPPES; status is on the state search - Practice location
- 77840 Flora RD, Palm Desert, CA 92211
- Phone
- (760) 200-8777
- Enumerated
- Sep 14, 2005
- Record last updated
- Aug 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (760) 200-8877
- Medicaid ID
- 00A395310 CA
- Medicare enrollment
- Enrolled (PECOS I20040322000973); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 77840 Flora RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Greenberg, MDRadiation Oncology Physician1568552859
- Xiaolin LiContractor1467095943
- Ted Ling, M.D., M.S.Radiation Oncology Physician1902121544
Verify Theodore D. Masek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A39531Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average radiation oncology physician in 2024
76 Medicare Part D claims for 29 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl36 claims
- Ciprofloxacin Hcl14 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: $40.68
2 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. 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.
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
- Paragon Chico Medical Group IncChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theodore D. Masek among 735 radiation oncology physician records in California
Theodore D. Masek, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 84% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1981 · median 2005 among the 545 with a school on file
- Record last updated2008 · 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 Palm Desert → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Peter Greenberg, MDPalm Desert, CA 922111568552859
- Ted Ling, M.D., M.S.Palm Desert, CA 922111902121544
- Yuji Seo, M.D.El Centro, CA 922431740493774
- Rosemonde Woel, M.D.El Centro, CA 922431538159694
- Perry Zong, MDPalm Desert, CA 922601548729502
- Judy Jackson, M.D.Palm Springs, CA 922621376512145
- Amir Lavaf, M.D.Palm Springs, CA 922621508024852
- Carolyn Barnes, M.D.Rancho Mirage, CA 922701346484490
Common questions
What is Theodore D. Masek, MD's NPI number?
Theodore D. Masek, MD's National Provider Identifier (NPI) is 1720073935, issued on Sep 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Theodore D. Masek, MD located?
The NPPES record lists a practice address at 77840 Flora RD, Palm Desert, CA, 92211. Phone: (760) 200-8777. Providers update this record themselves, so call before visiting.
How can I verify Theodore D. Masek, MD's license?
NPPES lists California license number A39531, 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 Theodore D. Masek, MD prescribe under Medicare Part D?
In 2024, Theodore D. Masek, MD had 76 Medicare Part D claims for 29 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.