Holly Diahn Prentice, P.A.C.
Medical Physician Assistant · Glendora, CA
Holly Diahn Prentice, P.A.C. is a medical physician assistant with a practice address in Glendora, California, and NPI 1588606404, issued on Jun 12, 2006. Check the license (California 15115, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Holly Diahn Prentice
- Credential
- P.A.C.
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 15115 CA
Self-reported in NPPES; status is on the state search - Practice location
- 440 W Foothill Blvd, Glendora, CA 91741
- Phone
- (626) 963-9402
- Enumerated
- Jun 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (626) 914-5316
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 440 W Foothill Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michelle Brereton, PASurgical Physician Assistant1477742781
- Andrea Douglas, P.A.C.Medical Physician Assistant1376585497
- Ruby Gonzalez, M.D.Family Medicine Physician1306226915
- Kurt Kurowski, M.D.Family Medicine Physician1417995887
- Maria Maldonado, MDFamily Medicine Physician1225695216
- Dana Robben-Folsom, P.A.C.Medical Physician Assistant1811939937
Verify Holly Diahn Prentice in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 15115Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average medical physician assistant in 2024
262 Medicare Part D claims for 182 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin28 claims
- Prednisone23 claims
- Paxlovid21 claims
- Cephalexin18 claims
- Nitrofurantoin Mono-Macro18 claims
- Doxycycline Hyclate15 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.
Holly Diahn Prentice among 3,376 medical physician assistant records in California
Holly Diahn Prentice, P.A.C. is one of 3,376 medical physician assistant records with a practice address in California. 69% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 80% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Glendora → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Andrea Douglas, P.A.C.Glendora, CA 917411376585497
- Dana Robben-Folsom, P.A.C.Glendora, CA 917411811939937
- Stephanie Sharma, PA-CGlendora, CA 917411619363868
- Mayra Hubbard, PA.Glendora, CA 917401033499108
- Elizabeth Soria-Palacios, PA-CGlendora, CA 917401306148150
- Bianca TomassianGlendora, CA 917401821440785
- Tamara Trzcinski, PHYSICIAN ASSISTANTGlendora, CA 917401083924260
- Song Jann, PA-CRancho Cucamonga, CA 917391114143211
Common questions
What is Holly Diahn Prentice, P.A.C.'s NPI number?
Holly Diahn Prentice, P.A.C.'s National Provider Identifier (NPI) is 1588606404, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Holly Diahn Prentice, P.A.C. located?
The NPPES record lists a practice address at 440 W Foothill Blvd, Glendora, CA, 91741. Phone: (626) 963-9402. Providers update this record themselves, so call before visiting.
How can I verify Holly Diahn Prentice, P.A.C.'s license?
NPPES lists California license number 15115, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Holly Diahn Prentice, P.A.C. prescribe under Medicare Part D?
In 2024, Holly Diahn Prentice, P.A.C. had 262 Medicare Part D claims for 182 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.