Andrea Elizabeth Williams, MD
Family Medicine Physician · Oakland, CA
Andrea Elizabeth Williams, MD is a family medicine physician with a practice address in Oakland, California, and NPI 1396733135, issued on Oct 6, 2005. Check the license (California G68057, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrea Elizabeth Williams
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G68057 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1411 E 31St St, Oakland, CA 94602
- Phone
- (510) 437-8500
- Enumerated
- Oct 6, 2005
- Record last updated
- Apr 16, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (510) 437-6567
- Medicare enrollment
- Enrolled (PECOS I20071016000200); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1411 E 31St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Andrea Elizabeth Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G68057Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family medicine physician in 2024
201 Medicare Part D claims for 103 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate13 claims
- Cephalexin13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 91 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Alameda Health SystemOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrea Elizabeth Williams among 17,133 family medicine physician records in California
Andrea Elizabeth Williams, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1988 · median 2005 among the 10,652 with a school on file
- Record last updated2014 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Oakland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jose Castellanos Monroy, MDOakland, CA 946021841814068
- I-Fei Chen, M.D.Oakland, CA 946021487736310
- David Yoo, MDOakland, CA 946021689767584
- Valerie Belle, FNP-C, PHNOakland, CA 946031568172716
- Samuel Bosch, MD, MPHOakland, CA 946011598440091
- Alyson Davidson, M.D.Oakland, CA 946011699209767
- Tara Gonzalez, MDOakland, CA 946011306379508
- Sandra Granger, RNOakland, CA 946011174473763
Common questions
What is Andrea Elizabeth Williams, MD's NPI number?
Andrea Elizabeth Williams, MD's National Provider Identifier (NPI) is 1396733135, issued on Oct 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Andrea Elizabeth Williams, MD located?
The NPPES record lists a practice address at 1411 E 31St St, Oakland, CA, 94602. Phone: (510) 437-8500. Providers update this record themselves, so call before visiting.
How can I verify Andrea Elizabeth Williams, MD's license?
NPPES lists California license number G68057, 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 Andrea Elizabeth Williams, MD prescribe under Medicare Part D?
In 2024, Andrea Elizabeth Williams, MD had 201 Medicare Part D claims for 103 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Andrea Elizabeth Williams, MD's MIPS final score?
The 2023 MIPS final score is 91 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.