Richard B. Armstrong, MD
Pediatrics Physician · San Jose, CA
Richard B. Armstrong, MD is a pediatrics physician with a practice address in San Jose, California, and NPI 1912083437, issued on Oct 27, 2006. Check the license (California G84003, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Richard B. Armstrong
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- G84003 CA
Self-reported in NPPES; status is on the state search - Practice location
- 260 International Cir, San Jose, CA 95119
- Phone
- (408) 972-7000
- Enumerated
- Oct 27, 2006
- Record last updated
- Dec 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00G840030 CA
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 260 International Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Richard B. Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G84003Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average pediatrics physician in 2024
18 Medicare Part D claims for 14 beneficiaries, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 72% of claims.
Most prescribed
- Adacel Tdap11 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.
Richard B. Armstrong among 9,272 pediatrics physician records in California
Richard B. Armstrong, MD is one of 9,272 pediatrics physician records with a practice address in California. 31% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 56% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2021 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
227 pediatrics physician records list a practice address in San Jose
They are 227 of the 20,925 NPPES records with a practice address in San Jose, and 9,272 pediatrics physician records in California.
All 9,272 in California → Every provider in San Jose → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Kathi Flowers, MDSan Jose, CA 951191528144037
- Frederick Gabali, MDSan Jose, CA 951191407932916
- Calvin Gordon, MDSan Jose, CA 951191174609689
- Tuan Huynh, MDSan Jose, CA 951191568548089
- Mary McNabb, MDSan Jose, CA 951191538245055
- Hafiz Miraly, MDSan Jose, CA 951191063598571
- Dao Nguyen, MDSan Jose, CA 951191508942020
- Meena Pai, MDSan Jose, CA 951191932285467
Common questions
What is Richard B. Armstrong, MD's NPI number?
Richard B. Armstrong, MD's National Provider Identifier (NPI) is 1912083437, issued on Oct 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard B. Armstrong, MD located?
The NPPES record lists a practice address at 260 International Cir, San Jose, CA, 95119. Phone: (408) 972-7000. Providers update this record themselves, so call before visiting.
How can I verify Richard B. Armstrong, MD's license?
NPPES lists California license number G84003, 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 Richard B. Armstrong, MD prescribe under Medicare Part D?
In 2024, Richard B. Armstrong, MD had 18 Medicare Part D claims for 14 beneficiaries; the average among pediatrics physician prescribers was 375. 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.