NPPES file of Aug 9, 2026

Scott Gregory Seidman, MD

Emergency Medicine Physician · Pleasanton, CA

Scott Gregory Seidman, MD is an emergency medicine physician with a practice address in Pleasanton, California, and NPI 1184605230, issued on Nov 7, 2005. Check the license (California G35332, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1184605230
Name
Scott Gregory Seidman
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
G35332 CA
Self-reported in NPPES; status is on the state search
Practice location
5555 W Las Positas Blvd, Pleasanton, CA 94588
Phone
(209) 342-2300
Enumerated
Nov 7, 2005
Record last updated
Jul 13, 2026
Fax
(209) 524-4240
Medicaid ID
00G353320 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 5555 W Las Positas Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dennis Alfaro, M.D.Emergency Medicine Physician1407847718
  2. Ashley Altman, MDDiagnostic Radiology Physician1649697947
  3. Joshua AshfordEmergency Registered Nurse1972458941
  4. Abinav Baweja, MDMedical Oncology Physician1770961575
  5. Brooke BettsPharmacist1962178491
  6. Myrna Castelazo, M.D.Diagnostic Radiology Physician1407290513

Verify Scott Gregory Seidman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G35332
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Scott Gregory Seidman among 7,751 emergency medicine physician records in California

Scott Gregory Seidman, MD is one of 7,751 emergency 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 not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 96% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2026 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

27 emergency medicine physician records list a practice address in Pleasanton

They are 27 of the 2,213 NPPES records with a practice address in Pleasanton, and 7,751 emergency medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Dennis Alfaro, M.D.Pleasanton, CA 945881407847718
  2. Paul Chasin, MDPleasanton, CA 945881649261959
  3. Michael Costello, MDPleasanton, CA 945881477544781
  4. Colleen Johnson, MDPleasanton, CA 945881720079049
  5. Edward Kan, MDPleasanton, CA 945881104804426
  6. Robert MandibergPleasanton, CA 945881336130640
  7. Gerald Nazareno, MDPleasanton, CA 945881679564983
  8. Cynthia Penn-Duecker, MDPleasanton, CA 945881033100359

Common questions

What is Scott Gregory Seidman, MD's NPI number?

Scott Gregory Seidman, MD's National Provider Identifier (NPI) is 1184605230, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Scott Gregory Seidman, MD located?

The NPPES record lists a practice address at 5555 W Las Positas Blvd, Pleasanton, CA, 94588. Phone: (209) 342-2300. Providers update this record themselves, so call before visiting.

How can I verify Scott Gregory Seidman, MD's license?

NPPES lists California license number G35332, 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. 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.