Stephen Gerald Weinstein, MD
Obstetrics & Gynecology Physician · Walnut Creek, CA
Stephen Gerald Weinstein, MD is an obstetrics & gynecology physician with a practice address in Walnut Creek, California, and NPI 1366556102, issued on Aug 18, 2006. Check the license (California G18806, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen Gerald Weinstein
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G18806 CA
Self-reported in NPPES; status is on the state search - Practice location
- 240 LA Casa Via, Walnut Creek, CA 94598
- Phone
- (925) 932-2565
- Enumerated
- Aug 18, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (925) 930-8568
- Medicaid ID
- ZZZ73673Z CA
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 240 LA Casa Via
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danielle Briggs, WHNP-BC, MSN, RN, MAWomen's Health Nurse Practitioner1609029453
Verify Stephen Gerald Weinstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G18806Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
24 Medicare Part D claims, against an average of 165 among the 28,733 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.
Industry payments in 2024: $17.44
1 payment: education; the largest payer was Pfizer Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Stephen Gerald Weinstein among 5,088 obstetrics & gynecology physician records in California
Stephen Gerald Weinstein, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2007 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 obstetrics & gynecology physician records list a practice address in Walnut Creek
They are 56 of the 6,170 NPPES records with a practice address in Walnut Creek, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Walnut Creek → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Rosemary DelgadoWalnut Creek, CA 945981235140500
- Anh Do, MDWalnut Creek, CA 945981548362122
- Tanees Edraki, MDWalnut Creek, CA 945981881644482
- Yaron Friedman, M.D.Walnut Creek, CA 945981730104704
- Nadine Hanna, M.D.Walnut Creek, CA 945981043244007
- Luman Hughes, M.D.Walnut Creek, CA 945981124040274
- Sari Kasper, D.O.Walnut Creek, CA 945981194739110
- Gerald Katz, M.D.Walnut Creek, CA 945981306868450
Common questions
What is Stephen Gerald Weinstein, MD's NPI number?
Stephen Gerald Weinstein, MD's National Provider Identifier (NPI) is 1366556102, issued on Aug 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Gerald Weinstein, MD located?
The NPPES record lists a practice address at 240 LA Casa Via, Walnut Creek, CA, 94598. Phone: (925) 932-2565. Providers update this record themselves, so call before visiting.
How can I verify Stephen Gerald Weinstein, MD's license?
NPPES lists California license number G18806, 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 Stephen Gerald Weinstein, MD prescribe under Medicare Part D?
In 2024, Stephen Gerald Weinstein, MD had 24 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.