Rosendo So-Rosillo, MD
Medical Oncology Physician · Mountain View, CA
Rosendo So-Rosillo, MD is a medical oncology physician with a practice address in Mountain View, California, and NPI 1407889827, issued on Jul 9, 2006. Check the license (California A81804, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rosendo So-Rosillo
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- A81804 CA
Self-reported in NPPES; status is on the state search - Practice location
- 701 E EL Camino Real, Mountain View, CA 94040
- Phone
- (650) 934-7600
- Enumerated
- Jul 9, 2006
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080102000167); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 447 in California → Look up another NPI →
Also registered at 701 E EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Felix Adler, M.D.Diagnostic Radiology Physician1801069729
- Olga Afanasiev, MD, PHDDermatology Physician1669869384
Verify Rosendo So-Rosillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81804Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% more Medicare Part D claims than the average medical oncology physician in 2024
1,260 Medicare Part D claims for 200 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. 55 claims were for opioids.
Most prescribed
- Abiraterone Acetate243 claims
- Prednisone207 claims
- Anastrozole77 claims
- Hydroxyurea56 claims
- Nivestym55 claims
- Xtandi50 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.
Bills Medicare through one group practice
- Permanente Medical Group IncRedwood City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rosendo So-Rosillo among 447 medical oncology physician records in California
Rosendo So-Rosillo, MD 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1997 · 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 Mountain View → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Iulia Giuroiu, M.D.Mountain View, CA 940401417247842
- Shiva SinghalMountain View, CA 940401942456389
- Shruti Sheth, M.D., MSC.Menlo Park, CA 940251831283167
- Richard Lenon, M.D.Woodside, CA 940621548575582
- Kenneth Yamamoto, MDDaly City, CA 940151467545368
- John Gordan, M.D., PH.D.San Bruno, CA 940661487881066
- Mark Benyunes, M.D.South San Francisco, CA 940801538418298
- Melissa Brammer, M.D., M.P.H.South San Francisco, CA 940801558649194
Common questions
What is Rosendo So-Rosillo, MD's NPI number?
Rosendo So-Rosillo, MD's National Provider Identifier (NPI) is 1407889827, issued on Jul 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rosendo So-Rosillo, MD located?
The NPPES record lists a practice address at 701 E EL Camino Real, Mountain View, CA, 94040. Phone: (650) 934-7600. Providers update this record themselves, so call before visiting.
How can I verify Rosendo So-Rosillo, MD's license?
NPPES lists California license number A81804, 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 Rosendo So-Rosillo, MD prescribe under Medicare Part D?
In 2024, Rosendo So-Rosillo, MD had 1,260 Medicare Part D claims for 200 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.