Joanne Gras, DO
Obstetrics & Gynecology Physician · Oakland, CA
Joanne Gras, DO is an obstetrics & gynecology physician with a practice address in Oakland, California, and NPI 1518045608, issued on Nov 2, 2006. Check the license (California 20A6815, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joanne Gras
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 20A6815 CA
Self-reported in NPPES; status is on the state search - Practice location
- 275 W Macarthur, Oakland, CA 94611
- Phone
- (510) 752-1000
- Enumerated
- Nov 2, 2006
- Record last updated
- Sep 19, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 00AX68150 CA
- Medicare enrollment
- Enrolled (PECOS I20110211000122); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 275 W Macarthur
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joanne Gras in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A6815Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Ucsf Medical Group Business ServicesSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joanne Gras among 5,088 obstetrics & gynecology physician records in California
Joanne Gras, DO 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 fileYes · 53% of these records are
- Graduated1994 · median 2004 among the 2,700 with a school on file
- Record last updated2014 · 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).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Oakland → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Grace Cavallaro, MDOakland, CA 946111548342165
- Victor Chin, MDOakland, CA 946111598843385
- Christie Cooksey, MDOakland, CA 946111689668386
- Patrick Dawkins, MDOakland, CA 946111760571145
- Rima Goldman, MDOakland, CA 946111528146354
- Judith Lamberti, MDOakland, CA 946111043398837
- Susan Liu, MDOakland, CA 946111376629881
- Sonia Ordonez, MDOakland, CA 946111215049986
Common questions
What is Joanne Gras, DO's NPI number?
Joanne Gras, DO's National Provider Identifier (NPI) is 1518045608, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joanne Gras, DO located?
The NPPES record lists a practice address at 275 W Macarthur, Oakland, CA, 94611. Phone: (510) 752-1000. Providers update this record themselves, so call before visiting.
How can I verify Joanne Gras, DO's license?
NPPES lists California license number 20A6815, 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. 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.