Peter Greenberg, MD
Radiation Oncology Physician · Palm Desert, CA
Peter Greenberg, MD is a radiation oncology physician with a practice address in Palm Desert, California, and NPI 1568552859, issued on Oct 15, 2006. Check the license (California G48958, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Peter Greenberg
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- G48958 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
- Oct 15, 2006
- Record last updated
- Aug 26, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (760) 200-8877
- Medicaid ID
- GR0063580 CA
- Medicare enrollment
- Enrolled (PECOS I20050125000604); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1981
- 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.
- Xiaolin LiContractor1467095943
- Ted Ling, M.D., M.S.Radiation Oncology Physician1902121544
- Theodore Masek, MDRadiation Oncology Physician1720073935
Verify Peter Greenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G48958Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average radiation oncology physician in 2024
120 Medicare Part D claims for 66 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 14 claims were for opioids.
Most prescribed
- Dexamethasone17 claims
- Ondansetron Odt14 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: $172.99
7 payments; by number, the most common kind was food and beverage; the largest payer was Blue Earth Diagnostics Limited. 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 IncPalm Desert, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter Greenberg among 735 radiation oncology physician records in California
Peter Greenberg, 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 55% 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 updated2009 · 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
- Ted Ling, M.D., M.S.Palm Desert, CA 922111902121544
- Theodore Masek, MDPalm Desert, CA 922111720073935
- 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 Peter Greenberg, MD's NPI number?
Peter Greenberg, MD's National Provider Identifier (NPI) is 1568552859, issued on Oct 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter Greenberg, 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 Peter Greenberg, MD's license?
NPPES lists California license number G48958, 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 Peter Greenberg, MD prescribe under Medicare Part D?
In 2024, Peter Greenberg, MD had 120 Medicare Part D claims for 66 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.