Zuzana U. Foster, M.D.
Rheumatology Physician · Walnut Creek, CA
Zuzana U. Foster, M.D. is a rheumatology physician with a practice address in Walnut Creek, California, and NPI 1184621542, issued on Jun 30, 2005. Check the license (California A65926, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Zuzana U. Foster
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A65926 CA
Self-reported in NPPES; status is on the state search - Practice location
- 120 LA Casa Via, Walnut Creek, CA 94598
- Phone
- (925) 210-1050
- Enumerated
- Jun 30, 2005
- Record last updated
- Dec 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (925) 210-1082
- Medicaid ID
- 00A659260 CA
- Medicare enrollment
- Enrolled (PECOS I20100818000577); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 120 LA Casa Via
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rashmi Dixit, M.D.Rheumatology Physician1811990666
- Janelle Gonsalves, PTAPhysical Therapist1770635468
- Ashley Gruendl, P.T.Physical Therapist1588062442
- Henry Kung, M.D.Gastroenterology Physician1518941673
- John Loeb, M.D.Rheumatology Physician1932106390
- Tighe Ohanrahan, MDFamily Medicine Physician1316977846
Verify Zuzana U. Foster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A65926Check 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% more Medicare Part D claims than the average rheumatology physician in 2024
3,659 Medicare Part D claims for 490 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 722 claims were for opioids.
Most prescribed
- Prednisone415 claims
- Hydroxychloroquine Sulfate365 claims
- Hydrocodone-Acetaminophen272 claims
- Meloxicam241 claims
- Tramadol Hcl229 claims
- Gabapentin198 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 MIPS final score for 2023 (Medicare payment program): 77.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,722.65
75 payments; by number, the most common kind was food and beverage; the largest payer was Ucb, Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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.
Bills Medicare through one group practice
- Arthritis And Rheumatology Medical Associates IncWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zuzana U. Foster among 926 rheumatology physician records in California
Zuzana U. Foster, M.D. is one of 926 rheumatology 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 · 69% of these records are
- Graduated1995 · median 2003 among the 641 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Walnut Creek → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Rashmi Dixit, M.D.Walnut Creek, CA 945981811990666
- John Loeb, M.D.Walnut Creek, CA 945981932106390
- Robert Wiskocil, MDWalnut Creek, CA 945981992883094
- David Wu, MDWalnut Creek, CA 945981023015484
- Saba Ziaee, MDWalnut Creek, CA 945981396004107
- Midori Nishio, M.D.Walnut Creek, CA 945971316010366
- Raul Romea, MDWalnut Creek, CA 945971962408112
- Vandana Sharma, M.D.Walnut Creek, CA 945971528131588
Common questions
What is Zuzana U. Foster, M.D.'s NPI number?
Zuzana U. Foster, M.D.'s National Provider Identifier (NPI) is 1184621542, issued on Jun 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Zuzana U. Foster, M.D. located?
The NPPES record lists a practice address at 120 LA Casa Via, Walnut Creek, CA, 94598. Phone: (925) 210-1050. Providers update this record themselves, so call before visiting.
How can I verify Zuzana U. Foster, M.D.'s license?
NPPES lists California license number A65926, 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 Zuzana U. Foster, M.D. prescribe under Medicare Part D?
In 2024, Zuzana U. Foster, M.D. had 3,659 Medicare Part D claims for 490 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Zuzana U. Foster, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.6 of 100. 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.