NPPES file of Aug 9, 2026

Gary Daniel Macgregor, M.D.

Emergency Medicine Physician · Redwood City, CA

Gary Daniel Macgregor, M.D. is an emergency medicine physician with a practice address in Redwood City, California, and NPI 1912019555, issued on Aug 31, 2006. Check the license (California G27051, 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
1912019555
Name
Gary Daniel Macgregor
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
G27051 CA
Self-reported in NPPES; status is on the state search
Practice location
170 Alameda DE Las Pulgas, Redwood City, CA 94062
Phone
(650) 367-5541
Enumerated
Aug 31, 2006
Record last updated
Oct 26, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
00G270510 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.
Download card Updates feed

8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →

Also registered at 170 Alameda DE Las Pulgas

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

  1. Sarah AbuseifHospitalist Physician1801281795
  2. David Adams, M.DEmergency Medicine Physician1891735643
  3. Michele AdkissonPerfusionist1831321447
  4. Jyothi Adsumilli, M.D.,Hospitalist Physician1245508159
  5. Ari AuwinitzkyPerfusionist1629585583
  6. Marjorie Berry Simon, LCSWClinical Social Worker1639477532

Verify Gary Daniel Macgregor in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G27051    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Gary Daniel Macgregor among 7,751 emergency medicine physician records in California

Gary Daniel Macgregor, M.D. 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 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 60% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2007 · 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).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,751 in California → Every provider in Redwood City → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. David Adams, M.DRedwood City, CA 940621891735643
  2. Sean Bourke, M.DRedwood City, CA 940621013964311
  3. Ariel Marks, M.DRedwood City, CA 940621568552438
  4. John Meharg, M.DRedwood City, CA 940621700826559
  5. George Oldham, M.DRedwood City, CA 940621336189182
  6. Alex Walsh, DORedwood City, CA 940621851956833
  7. James Ahn, MDRedwood City, CA 940631528146180
  8. George Bulloch, MDRedwood City, CA 940631134207723

Common questions

What is Gary Daniel Macgregor, M.D.'s NPI number?

Gary Daniel Macgregor, M.D.'s National Provider Identifier (NPI) is 1912019555, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gary Daniel Macgregor, M.D. located?

The NPPES record lists a practice address at 170 Alameda DE Las Pulgas, Redwood City, CA, 94062. Phone: (650) 367-5541. Providers update this record themselves, so call before visiting.

How can I verify Gary Daniel Macgregor, M.D.'s license?

NPPES lists California license number G27051, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.