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DR. GARY DANIEL MACGREGOR M.D.
NPI 1912019555
Emergency Medicine in Redwood City, CA

Active since August 31, 2006PECOS Enrolled
170 ALAMEDA DE LAS PULGAS, REDWOOD CITY, CA 94062(650) 367-5541 Get Directions Write a Review

NPPES record last updated: October 26, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Gary Daniel Macgregor M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GARY DANIEL MACGREGOR M.D. (NPI 1912019555) is an individual emergency medicine provider in Redwood City, California, licensed in California (G27051) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1912019555
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. GARY DANIEL MACGREGORCredential: M.D.
Location Address170 ALAMEDA DE LAS PULGASRedwood City, CA 94062-2751
Mailing Address2100 Powell St, Suite 900Emeryville, CA 94608-1826 · (510) 350-2600 · Fax (510) 879-9100
Phone(650) 367-5541
Sole ProprietorNo
Enumeration DateAugust 31, 2006
Last NPPES UpdateOctober 26, 2007
✔ NPI 1912019555 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · G27051
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
170 ALAMEDA DE LAS PULGAS, Redwood City, CA 94062
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Other Identifiers 3

Medicare PIN00G270510CA
Medicare UPINA43194CA
Medicaid00G270510CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gary Daniel Macgregor M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Gary Macgregor reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cep America - California
Same address
Emergency Medicine
170 ALAMEDA DE LAS PULGAS
Redwood City, CA 94062
  • Reassigned Medicare billing, California enrollment
  • 2,323 clinicians in this Medicare group
NPI 1487609996 (650) 369-5811

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94062 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CLIFTON JAMES MARSCHEL CCP
Perfusionist
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
San Mateo County (650) 369-5811
HELENA KEESOON LEE
Nurse Practitioner (Family)
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
San Mateo County (650) 369-5811
DR. MELISSA SUSANN LIM M.D.
Internal Medicine (Pulmonary Disease)
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
San Mateo County (650) 367-5636
SEAN EDWIN BOURKE M.D
Emergency Medicine
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
San Mateo County (650) 369-5811
SEQUOIA ANESTHESIA CONSULTANTS
Anesthesiology
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
San Mateo County (650) 367-5700
ROBERT B FISHER M D INC
Anesthesiology
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
San Mateo County (650) 369-5811
MELISSA MARCELIN
Registered Nurse
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
San Mateo County (650) 367-5636
DANIEL PARNELL, M.D., INC.
Anesthesiology
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
San Mateo County (650) 367-5554

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gary Macgregor's NPI number?

The NPI number for Gary Macgregor is 1912019555. It was assigned to this individual provider in the NPPES registry on August 31, 2006.

Where is Gary Macgregor located?

Gary Macgregor practices at 170 Alameda De Las Pulgas, Redwood City, CA 94062. The listed phone number is (650) 367-5541.

What is Gary Macgregor's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Gary Macgregor enrolled in Medicare?

Yes. Gary Macgregor is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gary Macgregor's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Macgregor reassigns Medicare benefits to Cep America - California (Redwood City, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gary Macgregor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Gary Macgregor was last updated on October 26, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.