Robert L. Wiskocil, MD
Rheumatology Physician · Walnut Creek, CA
Robert L. Wiskocil, MD is a rheumatology physician with a practice address in Walnut Creek, California, and NPI 1992883094, issued on Nov 2, 2006. Check the license (California G35989, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert L. Wiskocil
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G35989 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1776 Ygnacio Valley RD, Walnut Creek, CA 94598
- Phone
- (925) 974-7000
- Enumerated
- Nov 2, 2006
- Record last updated
- May 1, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 00G359890 CA
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 1776 Ygnacio Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alan Kaplan, M.D.Obstetrics & Gynecology Physician1902935869
Verify Robert L. Wiskocil in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G35989Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $204.00
2 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.
Robert L. Wiskocil among 926 rheumatology physician records in California
Robert L. Wiskocil, MD 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2013 · 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
- Zuzana Foster, M.D.Walnut Creek, CA 945981184621542
- John Loeb, M.D.Walnut Creek, CA 945981932106390
- 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 Robert L. Wiskocil, MD's NPI number?
Robert L. Wiskocil, MD's National Provider Identifier (NPI) is 1992883094, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert L. Wiskocil, MD located?
The NPPES record lists a practice address at 1776 Ygnacio Valley RD, Walnut Creek, CA, 94598. Phone: (925) 974-7000. Providers update this record themselves, so call before visiting.
How can I verify Robert L. Wiskocil, MD's license?
NPPES lists California license number G35989, 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.