Ronak Patel, M.D.
Hematology & Oncology Physician · Walnut Creek, CA
Ronak Patel, M.D. is a hematology & oncology physician with a practice address in Walnut Creek, California, and NPI 1255872602, issued on Mar 18, 2017. Check the license (California A157379, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronak Patel
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A157379 CA
Self-reported in NPPES; status is on the state search - Practice location
- 177 LA Casa Via Ste 390, Walnut Creek, CA 94598
- Phone
- (925) 692-5610
- Enumerated
- Mar 18, 2017
- Record last updated
- Nov 25, 2025
- Medicare enrollment
- Enrolled (PECOS I20191215000017); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 177 LA Casa Via Ste 390
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hangama Abassi, N.P.Nurse Practitioner1487083655
- Sarah Buenviaje, M.S.N., O.N.P.Nurse Practitioner1588716971
- Shannon ChakedisNurse Practitioner1134527690
- Aditi Choudhry, M.D.Hematology & Oncology Physician1427218908
- Mary Angelyn Clark, MSN, APRNNurse Practitioner1053887455
- Cameron Fisher, PAPhysician Assistant1073187936
Verify Ronak Patel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A157379Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
375 Medicare Part D claims for 152 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims. 17 claims were for opioids.
Most prescribed
- Eliquis34 claims
- Acyclovir26 claims
- Xarelto20 claims
- Anastrozole17 claims
- Hydroxyurea16 claims
- Dexamethasone14 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: $1,316.35
23 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Scientific Affairs, LLC. The 8,560 providers of this specialty with any payment received $7,481.41 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
- John Muir Physician NetworkPleasant Hill, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronak Patel among 1,583 hematology & oncology physician records in California
Ronak Patel, M.D. is one of 1,583 hematology & 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 2017, is newer than 89% of them.
- NPI issued2017 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2017 · median 2003 among the 1,124 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Walnut Creek → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Aditi Choudhry, M.D.Walnut Creek, CA 945981427218908
- Aruna Gavini, MDWalnut Creek, CA 945981942439021
- Ammara Gill, MDWalnut Creek, CA 945981447482096
- Jewel Johl, M.D.Walnut Creek, CA 945981407852858
- Jose Ochoa-Bayona, M.D.Walnut Creek, CA 945981669475158
- Jonathan PaiWalnut Creek, CA 945981285196105
- Gauri Sharma, D.O.Walnut Creek, CA 945981528234002
- Michael Sherman, M.D., PHDWalnut Creek, CA 945981164643359
Common questions
What is Ronak Patel, M.D.'s NPI number?
Ronak Patel, M.D.'s National Provider Identifier (NPI) is 1255872602, issued on Mar 18, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Ronak Patel, M.D. located?
The NPPES record lists a practice address at 177 LA Casa Via Ste 390, Walnut Creek, CA, 94598. Phone: (925) 692-5610. Providers update this record themselves, so call before visiting.
How can I verify Ronak Patel, M.D.'s license?
NPPES lists California license number A157379, 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 Ronak Patel, M.D. prescribe under Medicare Part D?
In 2024, Ronak Patel, M.D. had 375 Medicare Part D claims for 152 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.