Randall W. Armstrong, M.D.
Specialist · Sacramento, CA
Randall W. Armstrong, M.D. is a specialist with a practice address in Sacramento, California, and NPI 1326063389, issued on Jul 12, 2006. Check the license (California G53496, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Randall W. Armstrong
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- G53496 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2801 K St Ste 500, Sacramento, CA 95816
- Phone
- (916) 853-0460
- Enumerated
- Jul 12, 2006
- Record last updated
- Mar 14, 2025
- Fax
- (916) 853-0464
- Medicare enrollment
- Enrolled (PECOS I20060920000301); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1983
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 2801 K St Ste 500
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aleksey Lazarev, M.D.Sports Medicine (Orthopaedic Surgery) Physician1669606240
Verify Randall W. Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G53496Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average specialist in 2024
112 Medicare Part D claims for 58 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 53 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen45 claims
- Gabapentin16 claims
- Diazepam14 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 MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Randall W. Armstrong among 5,749 specialist records in California
Randall W. Armstrong, M.D. 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1983 · median 1989 among the 1,075 with a school on file
- Record last updated2025 · 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).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Sacramento → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Thomas Amott, M.D.Sacramento, CA 958161376573717
- Dario Caccamo, M.D.Sacramento, CA 958161861412355
- Denette Dengler, M.D.Sacramento, CA 958161376585018
- Robert Ghiselli, M.D.Sacramento, CA 958161164433413
- Martin Goldberg, M.D.Sacramento, CA 958161346286564
- James Lilla, M.D.Sacramento, CA 958161538105226
- Gwen Mazoujian, M.D.Sacramento, CA 958161669492120
- Norman McMurry, M.D.Sacramento, CA 958161215950977
Common questions
What is Randall W. Armstrong, M.D.'s NPI number?
Randall W. Armstrong, M.D.'s National Provider Identifier (NPI) is 1326063389, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Randall W. Armstrong, M.D. located?
The NPPES record lists a practice address at 2801 K St Ste 500, Sacramento, CA, 95816. Phone: (916) 853-0460. Providers update this record themselves, so call before visiting.
How can I verify Randall W. Armstrong, M.D.'s license?
NPPES lists California license number G53496, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Randall W. Armstrong, M.D. prescribe under Medicare Part D?
In 2024, Randall W. Armstrong, M.D. had 112 Medicare Part D claims for 58 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Randall W. Armstrong, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. 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.