Richard L. Weinstein, M.D.
Internal Medicine Physician · Walnut Creek, CA
Richard L. Weinstein, M.D. is an internal medicine physician with a practice address in Walnut Creek, California, and NPI 1972522407, issued on Jul 18, 2006. Check the license (California C33113, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Richard L. Weinstein
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C33113 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1656 N California Blvd, Walnut Creek, CA 94596
- Phone
- (925) 952-2888
- Enumerated
- Jul 18, 2006
- Record last updated
- Jan 10, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (925) 952-2845
- Medicaid ID
- 00C331130 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1656 N California Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachael Cabreira, MSN-FNP-CFamily Nurse Practitioner1013047257
- Justin Collingham, M.D.Maternal & Fetal Medicine Physician1346382314
- Nancy Cook, NPAdult Health Nurse Practitioner1639314719
- Rosa Won, M.D.Maternal & Fetal Medicine Physician1952489718
Verify Richard L. Weinstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C33113Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Richard L. Weinstein among 17,696 internal medicine physician records in California
Richard L. Weinstein, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2008 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
183 internal medicine physician records list a practice address in Walnut Creek
They are 183 of the 6,170 NPPES records with a practice address in Walnut Creek, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 17,696 in California → Every provider in Walnut Creek → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Anthony Arroyo, MDWalnut Creek, CA 945961376621458
- Sheila Bhatia, MDWalnut Creek, CA 945961225135379
- Amrita Dhaliwal, MDWalnut Creek, CA 945961164500740
- Nellia Karakozova, MDWalnut Creek, CA 945961659459154
- Joseph Long, MDWalnut Creek, CA 945961225116379
- Roxanne McDaniel, MDWalnut Creek, CA 945961457439937
- Huu Nguyen, D.O.Walnut Creek, CA 945961811966492
- Jeff Ortiz, MDWalnut Creek, CA 945961891873964
Common questions
What is Richard L. Weinstein, M.D.'s NPI number?
Richard L. Weinstein, M.D.'s National Provider Identifier (NPI) is 1972522407, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard L. Weinstein, M.D. located?
The NPPES record lists a practice address at 1656 N California Blvd, Walnut Creek, CA, 94596. Phone: (925) 952-2888. Providers update this record themselves, so call before visiting.
How can I verify Richard L. Weinstein, M.D.'s license?
NPPES lists California license number C33113, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.