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GARY ALAN PASTERNAK MD
NPI 1194820688
Internal Medicine in San Mateo, CA

Active since September 13, 2006PECOS Enrolled
1670 SOUTH AMPHLETT BLVD., SUITE 300, SAN MATEO, CA 94403(650) 554-1000(650) 554-1018 Get Directions Write a Review

NPPES record last updated: December 17, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gary Alan Pasternak Md NPPES

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

GARY ALAN PASTERNAK MD (NPI 1194820688) is an individual internal medicine provider in San Mateo, California, licensed in California (G55926) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194820688
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGARY ALAN PASTERNAKCredential: MD
Location Address1670 SOUTH AMPHLETT BLVD., SUITE 300San Mateo, CA 94403
Mailing Address16460 Ferris AveLos Gatos, CA 95032 · (408) 605-2949
Phone(650) 554-1000
Fax(650) 554-1018
Sole ProprietorYes
Enumeration DateSeptember 13, 2006
Last NPPES UpdateDecember 17, 2010
✔ NPI 1194820688 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G55926
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1670 SOUTH AMPHLETT BLVD., San Mateo, CA 94403
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Other Identifiers 3

Medicare UPINE24884CA
Medicare PIN00G559260CA
Medicaid00G559260CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gary Alan Pasternak Md 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 Pasternak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mission Hospice & Home Care Inc.
0.9 mi
Hospice and Palliative Medicine
66 BOVET RD STE 100
San Mateo, CA 94402
  • Reassigned Medicare billing, California enrollment
  • 7 clinicians in this Medicare group
NPI 1831772359 (650) 554-1000

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 94403 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
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.

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 Pasternak's NPI number?

The NPI number for Gary Pasternak is 1194820688. It was assigned to this individual provider in the NPPES registry on September 13, 2006.

Where is Gary Pasternak located?

Gary Pasternak practices at 1670 South Amphlett Blvd. Suite 300, San Mateo, CA 94403. The listed phone number is (650) 554-1000.

What is Gary Pasternak's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gary Pasternak enrolled in Medicare?

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

Which organization bills Medicare for Gary Pasternak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Pasternak reassigns Medicare benefits to Mission Hospice & Home Care Inc. (San Mateo, 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 Pasternak'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 Pasternak was last updated on December 17, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.