Roberto Tostado, MD
Specialist · San Marino, CA
Roberto Tostado, MD is a specialist with a practice address in San Marino, California, and NPI 1437328689, issued on Feb 21, 2008. Check the license (California G77858, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Roberto Tostado
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- G77858 CA
Self-reported in NPPES; status is on the state search - Practice location
- 956 Huntington Dr, San Marino, CA 91108
- Phone
- (626) 593-5993
- Enumerated
- Feb 21, 2008
- Record last updated
- May 20, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (888) 551-5098
- Medicare enrollment
- Enrolled (PECOS I20050907001072); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1992
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 956 Huntington Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Teresa Tostado, NPFamily Nurse Practitioner1922443373
Verify Roberto Tostado in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G77858Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average specialist in 2024
43 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Armour Thyroid13 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.
Roberto Tostado among 5,749 specialist records in California
Roberto Tostado, MD is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1992 · median 1989 among the 1,075 with a school on file
- Record last updated2013 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 specialist records list a practice address in San Marino
They are 4 of the 184 NPPES records with a practice address in San Marino, and 5,749 specialist records in California.
All 5,749 in California → Every provider in San Marino → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Lorna Blanco, M.D.San Marino, CA 911081093787178
- Louis Countryman, M.D.San Marino, CA 911081184612327
- John Wong, M.D.San Marino, CA 911081508109182
- Armond BellPasadena, CA 911071326296559
- Jason Boutros, M.D.Pasadena, CA 911071942243563
- Marie Fowler, MBAPasadena, CA 911071902096993
- Clifton Mayberry, MDPasadena, CA 911071063543056
- Naclaysia McGeePasadena, CA 911071306250808
Common questions
What is Roberto Tostado, MD's NPI number?
Roberto Tostado, MD's National Provider Identifier (NPI) is 1437328689, issued on Feb 21, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Roberto Tostado, MD located?
The NPPES record lists a practice address at 956 Huntington Dr, San Marino, CA, 91108. Phone: (626) 593-5993. Providers update this record themselves, so call before visiting.
How can I verify Roberto Tostado, MD's license?
NPPES lists California license number G77858, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Roberto Tostado, MD prescribe under Medicare Part D?
In 2024, Roberto Tostado, MD had 43 Medicare Part D claims; the average among specialist prescribers was 1,380. 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.