Ranjan Pathak, M.D.
Medical Oncology Physician · Chico, CA
Ranjan Pathak, M.D. is a medical oncology physician with a practice address in Chico, California, and NPI 1770924102, issued on Jul 15, 2013. Check the license (California A168183, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ranjan Pathak
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- A168183 CA
MT204019 PA
Self-reported in NPPES; status is on the state search - Practice location
- 265 Cohasset RD, Chico, CA 95926
- Phone
- (530) 332-4700
- Enumerated
- Jul 15, 2013
- Record last updated
- Dec 30, 2022
- Fax
- (530) 893-6906
- Medicare enrollment
- Enrolled (PECOS I20200418000494); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 447 in California → Look up another NPI →
Also registered at 265 Cohasset RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Bonis, MDHematology & Oncology Physician1689779209
- Kalyn Burnell, RDRegistered Dietitian1083318125
- Rubens Costa Filho, MDHematology & Oncology Physician1023342466
- Anne Dawson, M.D.Radiation Oncology Physician1902847981
- Dana DominguezSurgical Oncology Physician1083091425
- Debra Garley, MDHematology & Oncology Physician1447322292
Verify Ranjan Pathak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A168183Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% more Medicare Part D claims than the average medical oncology physician in 2024
1,306 Medicare Part D claims for 168 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 137 claims were for opioids.
Most prescribed
- Prednisone97 claims
- Ondansetron Hcl72 claims
- Prochlorperazine Maleate72 claims
- Abiraterone Acetate66 claims
- Hydroxyurea54 claims
- Eliquis51 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 72.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Enloe Specialty Physicians, IncChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ranjan Pathak among 447 medical oncology physician records in California
Ranjan Pathak, 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 2013, is newer than 77% of them.
- NPI issued2013 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2010 · median 2004 among the 312 with a school on file
- Record last updated2022 · 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 Chico → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- David Potter, MDChico, CA 959261972560076
- Ajay Verma, M.D.Redding, CA 960011386755403
- Behrooz Zidehsarai, MDRedding, CA 960011639177975
- Carolyn Collins, MDRedding, CA 960021356380554
- Michael Figueroa, M.DRedding, CA 960021558316042
- Bradley SackfieldRedding, CA 960021851920409
- Janai Carr-Ascher, MD, PHDSacramento, CA 958171538401195
- Ryan Leibrandt, M.D.Sacramento, CA 958171801327044
Common questions
What is Ranjan Pathak, M.D.'s NPI number?
Ranjan Pathak, M.D.'s National Provider Identifier (NPI) is 1770924102, issued on Jul 15, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Ranjan Pathak, M.D. located?
The NPPES record lists a practice address at 265 Cohasset RD, Chico, CA, 95926. Phone: (530) 332-4700. Providers update this record themselves, so call before visiting.
How can I verify Ranjan Pathak, M.D.'s license?
NPPES lists California license number A168183, 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 Ranjan Pathak, M.D. prescribe under Medicare Part D?
In 2024, Ranjan Pathak, M.D. had 1,306 Medicare Part D claims for 168 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Ranjan Pathak, M.D.'s MIPS final score?
The 2023 MIPS final score is 72.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.