Michael W. Greenberg, PHYSICIAN ASSISTANT
Physician Assistant · Placentia, CA
Michael W. Greenberg, PHYSICIAN ASSISTANT is a physician assistant with a practice address in Placentia, California, and NPI 1386769511, issued on Mar 20, 2007. Check the license (California PA10897, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael W. Greenberg
- Credential
- PHYSICIAN ASSISTANT
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA10897 CA
Self-reported in NPPES; status is on the state search - Practice location
- 640 S Placentia Ave, Placentia, CA 92870
- Phone
- (615) 778-4066
- Enumerated
- Mar 20, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100712000515); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 640 S Placentia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kimberly Anne Tran, DNP, APRN, FNP-CFamily Nurse Practitioner1326870502
Verify Michael W. Greenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA10897Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average physician assistant in 2024
13 Medicare Part D claims for 12 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- American Current Care OF California A Medical CorporationPlacentia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael W. Greenberg among 14,451 physician assistant records in California
Michael W. Greenberg, PHYSICIAN ASSISTANT is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 13% of them.
- NPI issued2007 · 13% of these records are older, 78% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1980 · median 2018 among the 7,214 with a school on file
- Record last updated2007 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 physician assistant records list a practice address in Placentia
They are 14 of the 1,002 NPPES records with a practice address in Placentia, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Placentia → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Daniel Antis, PA-CPlacentia, CA 928701437303310
- Charlotte BaderPlacentia, CA 928701598353138
- Tori GormanPlacentia, CA 928701730943119
- Johanna Hall, PA-CPlacentia, CA 928701407215015
- Myra Belle Julom, PA-CPlacentia, CA 928701801597539
- Elizabeth Keliiholokai, PAPlacentia, CA 928701649523929
- Mona Koyle, PA-CPlacentia, CA 928701952485534
- Christopher LePlacentia, CA 928701326670217
Common questions
What is Michael W. Greenberg, PHYSICIAN ASSISTANT's NPI number?
Michael W. Greenberg, PHYSICIAN ASSISTANT's National Provider Identifier (NPI) is 1386769511, issued on Mar 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael W. Greenberg, PHYSICIAN ASSISTANT located?
The NPPES record lists a practice address at 640 S Placentia Ave, Placentia, CA, 92870. Phone: (615) 778-4066. Providers update this record themselves, so call before visiting.
How can I verify Michael W. Greenberg, PHYSICIAN ASSISTANT's license?
NPPES lists California license number PA10897, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael W. Greenberg, PHYSICIAN ASSISTANT prescribe under Medicare Part D?
In 2024, Michael W. Greenberg, PHYSICIAN ASSISTANT had 13 Medicare Part D claims for 12 beneficiaries; the average among physician assistant prescribers was 830. 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.