Giribala R. Patel, M.D.
Medical Oncology Physician · Fullerton, CA
Giribala R. Patel, M.D. is a medical oncology physician with a practice address in Fullerton, California, and NPI 1033106562, issued on Sep 30, 2005. Check the license (California A43865, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Giribala R. Patel
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- A43865 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2151 N Harbor Blvd Ste 3200, Fullerton, CA 92835
- Phone
- (714) 446-5900
- Enumerated
- Sep 30, 2005
- Record last updated
- Nov 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (714) 446-5800
- Medicare enrollment
- Enrolled (PECOS I20040526001710); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 447 in California → Look up another NPI →
Also registered at 2151 N Harbor Blvd Ste 3200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Diosdado, NPFamily Nurse Practitioner1700628385
- Steven Kim, MDHematology & Oncology Physician1003886698
- Monica Lee, M.D.Hematology & Oncology Physician1215129309
- Richard Lloyd, M.D.Medical Oncology Physician1073509030
- Steven Luminais, MDInternal Medicine Physician1427518752
- Yung Lyou, M.D., PH.D.Hematology & Oncology Physician1013277342
Verify Giribala R. Patel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A43865Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average medical oncology physician in 2024
1,571 Medicare Part D claims for 302 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 18 claims were for opioids.
Most prescribed
- Anastrozole312 claims
- Exemestane108 claims
- Potassium Chloride102 claims
- Letrozole79 claims
- Ondansetron Hcl78 claims
- Prochlorperazine Maleate71 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: $1,878.52
104 payments; by number, the most common kind was food and beverage; the largest payer was Celgene Corporation. The 3,343 providers of this specialty with any payment received $11,773.47 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
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Giribala R. Patel among 447 medical oncology physician records in California
Giribala R. Patel, M.D. is one of 447 medical oncology physician records with a practice address in California. 82% 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, 94% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1980 · median 2004 among the 312 with a school on file
- Record last updated2021 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in California
There are 447 medical oncology physician records in California.
All 447 in California → Every provider in Fullerton → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Richard Lloyd, M.D.Fullerton, CA 928351073509030
- David Park, M.D.Fullerton, CA 928351275619447
- Sanjay Sharma, M.D.Fullerton, CA 928351174609358
- Farshid Dayyani, M.D., PH.D.Orange, CA 928681376710434
- Samuel Ejadi, MDOrange, CA 928681285605212
- Sayeh Lavasani, MDOrange, CA 928681205130572
- Susan O'Brien, M.D.Orange, CA 928681669577276
- Jennifer Valerin, M.D.Orange, CA 928681376770255
Common questions
What is Giribala R. Patel, M.D.'s NPI number?
Giribala R. Patel, M.D.'s National Provider Identifier (NPI) is 1033106562, issued on Sep 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Giribala R. Patel, M.D. located?
The NPPES record lists a practice address at 2151 N Harbor Blvd Ste 3200, Fullerton, CA, 92835. Phone: (714) 446-5900. Providers update this record themselves, so call before visiting.
How can I verify Giribala R. Patel, M.D.'s license?
NPPES lists California license number A43865, 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 Giribala R. Patel, M.D. prescribe under Medicare Part D?
In 2024, Giribala R. Patel, M.D. had 1,571 Medicare Part D claims for 302 beneficiaries; the average among medical oncology physician prescribers was 703. 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.