William James Greene, M.D.
Psychiatry Physician · Modesto, CA
William James Greene, M.D. is a psychiatry physician with a practice address in Modesto, California, and NPI 1396189791, issued on Apr 29, 2013. Check the license (California A149842, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William James Greene
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- A149842 CA
MED-PHYS-LIC-145711 MT
MD221600 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1501 Claus RD, Modesto, CA 95355
- Phone
- (209) 579-5628
- Enumerated
- Apr 29, 2013
- Record last updated
- Apr 9, 2025
- Medicare enrollment
- Enrolled (PECOS I20171218002861); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1501 Claus RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sonia Alves, A.S.W.Social Worker1467617183
- Juan Campos, MFTINTMental Health Counselor1508983594
- Srikanth Challagundla, M.DPsychiatry Physician1902186737
- Hilda CotinoTechnician1255511390
- Oliva Del Pilar, M.D.Psychiatry Physician1457415879
- Evelyn Edelmuth, MDPsychiatry Physician1871505776
Verify William James Greene in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A149842Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average psychiatry physician in 2024
166 Medicare Part D claims for 46 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Quetiapine Fumarate12 claims
- Olanzapine11 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.
Bills Medicare through one group practice
- Asana Integrated Medical Group PCVacaville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William James Greene among 8,673 psychiatry physician records in California
William James Greene, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 69% of them.
- NPI issued2013 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2013 · median 2005 among the 3,295 with a school on file
- Record last updated2025 · 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 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Modesto → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Oliva Del Pilar, M.D.Modesto, CA 953551457415879
- Evelyn Edelmuth, MDModesto, CA 953551871505776
- Gilbert Eggen, DOModesto, CA 953551588742498
- Mieczyslaw Hetnal, M.D.Modesto, CA 953551841226149
- Fahmy Ibrahim, M.D.Modesto, CA 953551255424404
- John Jacisin, M.D.Modesto, CA 953551942301114
- Nusrat Malik, M.D.Modesto, CA 953551104998798
- Antoun Manganas, M.D.Modesto, CA 953551114938974
Common questions
What is William James Greene, M.D.'s NPI number?
William James Greene, M.D.'s National Provider Identifier (NPI) is 1396189791, issued on Apr 29, 2013. An NPI identifies a provider in billing; it is not a license.
Where is William James Greene, M.D. located?
The NPPES record lists a practice address at 1501 Claus RD, Modesto, CA, 95355. Phone: (209) 579-5628. Providers update this record themselves, so call before visiting.
How can I verify William James Greene, M.D.'s license?
NPPES lists California license number A149842, 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 William James Greene, M.D. prescribe under Medicare Part D?
In 2024, William James Greene, M.D. had 166 Medicare Part D claims for 46 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.