NPPES file of Aug 9, 2026

Stephen G. Shaw, M.D.

Internal Medicine Physician · Atascadero, CA

Stephen G. Shaw, M.D. is an internal medicine physician with a practice address in Atascadero, California, and NPI 1780668392, issued on Dec 6, 2005. Check the license (California 140998, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1780668392
Name
Stephen G. Shaw
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
140998 CA
233206 NY
Self-reported in NPPES; status is on the state search
Practice location
10333 EL Camino Real, Atascadero, CA 93422
Phone
(805) 468-2000
Enumerated
Dec 6, 2005
Record last updated
Feb 25, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicaid ID
02709722 NY
Medicare enrollment
Enrolled (PECOS I20190405001354); accepts Medicare assignment
Medical or professional school
University Of Mississippi School Of Medicine, 1994
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10333 EL Camino Real

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

  1. Joseph Abrahamson, MDForensic Psychiatry Physician1750309423
  2. Ajibade Adeladan, MDPsychiatry Physician1013178763
  3. Henry Ahlstrom, PH.D.Clinical Psychologist1619945870
  4. Moghees AhmedPsychiatry Physician1124333125
  5. Hossein Akhavan, M.D.Internal Medicine Physician1871779942
  6. Paula Aloi, PSYDClinical Psychologist1306134630

Verify Stephen G. Shaw in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 140998
    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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Bills Medicare through one group practice

  1. Department OF State HospitalsAtascadero, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Stephen G. Shaw among 17,696 internal medicine physician records in California

Stephen G. Shaw, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 95% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1994 · median 2004 among the 11,065 with a school on file
  • Record last updated2019 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

15 internal medicine physician records list a practice address in Atascadero

They are 15 of the 992 NPPES records with a practice address in Atascadero, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Hossein Akhavan, M.D.Atascadero, CA 934221871779942
  2. Robin Alleyne, MD.Atascadero, CA 934221114957941
  3. Lymar Bik, M.D.Atascadero, CA 934221164530622
  4. Ben Cooke, MDAtascadero, CA 934221528512803
  5. Jason Green, M.D.Atascadero, CA 934221215000823
  6. Emily Luk, M.D.Atascadero, CA 934221023118007
  7. Jane McClenahan, M.D.Atascadero, CA 934221679599377
  8. Abiodun Obadina, M.D.,Atascadero, CA 934221790852945

Common questions

What is Stephen G. Shaw, M.D.'s NPI number?

Stephen G. Shaw, M.D.'s National Provider Identifier (NPI) is 1780668392, issued on Dec 6, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Stephen G. Shaw, M.D. located?

The NPPES record lists a practice address at 10333 EL Camino Real, Atascadero, CA, 93422. Phone: (805) 468-2000. Providers update this record themselves, so call before visiting.

How can I verify Stephen G. Shaw, M.D.'s license?

NPPES lists California license number 140998, 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.