Gregory Duncan Crowder, PHARMD
Pharmacist · San Diego, CA
Gregory Duncan Crowder, PHARMD is a pharmacist with a practice address in San Diego, California, and NPI 1972888998, issued on Oct 21, 2011. Check the license (California 53008, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Duncan Crowder
- Credential
- PHARMD
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 53008 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6155 EL Cajon Blvd, San Diego, CA 92115
- Phone
- (619) 583-4160
- Enumerated
- Oct 21, 2011
- Record last updated
- Oct 21, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Also registered at 6155 EL Cajon Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mai Nghiem, PHARM.DPharmacist1437434404
Verify Gregory Duncan Crowder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 53008Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 100% of the cost of the top drugs
39 Medicare Part D claims for 34 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy19 claims
- Shingrix17 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.
Gregory Duncan Crowder among 32,533 pharmacist records in California
Gregory Duncan Crowder, PHARMD is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 18% of them.
- NPI issued2011 · 18% of these records are older, 72% newer
- In a Medicare fileYes · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2011 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,555 pharmacist records list a practice address in San Diego
They are 1,555 of the 52,937 NPPES records with a practice address in San Diego, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in San Diego → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Cecile Marie Alcaraz, RPHSan Diego, CA 921151912029752
- Khiet Bui, RPHSan Diego, CA 921151285762708
- Kristen CoteSan Diego, CA 921151003083668
- Christina HaSan Diego, CA 921151912312174
- Unhae KimSan Diego, CA 921151588072664
- Mai Nghiem, PHARM.DSan Diego, CA 921151437434404
- Dung Phan, R.PH.San Diego, CA 921151073518627
- Bryan Porterfield, PHARMDSan Diego, CA 921151962744383
Common questions
What is Gregory Duncan Crowder, PHARMD's NPI number?
Gregory Duncan Crowder, PHARMD's National Provider Identifier (NPI) is 1972888998, issued on Oct 21, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Duncan Crowder, PHARMD located?
The NPPES record lists a practice address at 6155 EL Cajon Blvd, San Diego, CA, 92115. Phone: (619) 583-4160. Providers update this record themselves, so call before visiting.
How can I verify Gregory Duncan Crowder, PHARMD's license?
NPPES lists California license number 53008, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Duncan Crowder, PHARMD prescribe under Medicare Part D?
In 2024, Gregory Duncan Crowder, PHARMD had 39 Medicare Part D claims for 34 beneficiaries; the average among pharmacist prescribers was 119. 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.