Jack Siegel
Specialist · Los Gatos, CA
Jack Siegel is a specialist with a practice address in Los Gatos, California, and NPI 1710919097, issued on Jul 7, 2006. Check the license (California G31762, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Jack Siegel
- Primary taxonomy
- Specialist 174400000X
- License number
- G31762 CA
Self-reported in NPPES; status is on the state search - Practice location
- 121 Griffith PL, Los Gatos, CA 95030
- Phone
- (408) 497-2258
- Enumerated
- Jul 7, 2006
- Entity
- Type 1 · individual
Verify Jack Siegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G31762Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
36 specialist records list a Los Gatos practice address
They are 36 of the 1,905 NPPES records with a Los Gatos practice address, and 6,640 specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 36 in Los Gatos → All 6,640 in California → Every provider in Los Gatos →
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Common questions
What is Jack Siegel's NPI number?
Jack Siegel's National Provider Identifier (NPI) is 1710919097, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jack Siegel located?
The NPPES record lists a practice address at 121 Griffith PL, Los Gatos, CA, 95030. Phone: (408) 497-2258. Providers update this record themselves, so call before visiting.
How can I verify Jack Siegel's license?
NPPES lists California license number G31762, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.