JEFFREY J. GUTTAS, M.D. A MEDICAL CORPORATION
NPI 1891866869
Internal Medicine - Cardiovascular Disease in San Mateo, CA

Q: What is Jeffrey J. Guttas, M.D. A Medical Corporation's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Active since November 13, 2006

100 S SAN MATEO DR, SUITE 400, SAN MATEO, CA 94401(650) 696-4100(650) 696-4121 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Jeffrey J. Guttas, M.d. A Medical Corporation NPPES

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

JEFFREY J. GUTTAS, M.D. A MEDICAL CORPORATION (NPI 1891866869) is a healthcare organization registered as a cardiovascular disease in San Mateo, California and active in the NPI registry since November 2006. The organization lists Jeffrey J Guttas, President, as its authorized official.

NPPES Registry Identity

NPI1891866869

Entity TypeOrganization

Primary Taxonomy207RC0000X

Legal Business NameJEFFREY J. GUTTAS, M.D. A MEDICAL CORPORATION

Location Address100 S SAN MATEO DR, SUITE 400San Mateo, CA 94401-3805

Mailing Address100 S San Mateo Dr, Suite 400San Mateo, CA 94401-3805 · (650) 696-4100 · Fax (650) 696-4121

Phone(650) 696-4100

Fax(650) 696-4121

Organization SubpartNo

Authorized OfficialJeffrey J GuttasPresident · (650) 696-4100

Enumeration DateNovember 13, 2006

Last NPPES UpdateAugust 22, 2020

✔ NPI 1891866869 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

100 S SAN MATEO DR, San Mateo, CA 94401

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jeffrey J. Guttas, M.d. A Medical Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 3 clinicians reassign Medicare billing to Jeffrey J. Guttas, M.D. A Medical Corporation, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 3 within 10 miles. They are listed nearest first.

Clinicians, nearest first (3)

David Kurzrock, M.D.

Interventional Cardiology

NPI 1619988425

100 S SAN MATEO DR SUITE 400
San Mateo, CA 94401

(650) 696-4100

✔ PECOS✔ Accepts MedicareSame address

Frederick Watson, M.D.

Cardiovascular Disease (Cardiology)

NPI 1568450104

50 S SAN MATEO DR
San Mateo, CA 94401

(650) 652-8600

✔ PECOS✔ Accepts Medicare0.2 mi

Jeffrey Guttas, M.D.

Cardiovascular Disease (Cardiology)

NPI 1093726895

100 S SAN MATEO DR SUITE 400
San Mateo, CA 94401

(650) 696-4100

✔ PECOS✔ Accepts Medicare0.2 mi

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

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 Jeffrey J. Guttas, M.D. A Medical Corporation's NPI number?

The NPI number for Jeffrey J. Guttas, M.D. A Medical Corporation is 1891866869. It was assigned to this organization in the NPPES registry on November 13, 2006.

Where is Jeffrey J. Guttas, M.D. A Medical Corporation located?

Jeffrey J. Guttas, M.D. A Medical Corporation is located at 100 S San Mateo Dr Suite 400, San Mateo, CA 94401. The listed phone number is (650) 696-4100.

What is Jeffrey J. Guttas, M.D. A Medical Corporation's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Jeffrey J. Guttas, M.D. A Medical Corporation enrolled in Medicare?

Yes. Jeffrey J. Guttas, M.D. A Medical Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Jeffrey J. Guttas, M.D. A Medical Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Jeffrey J. Guttas, M.D. A Medical Corporation, in Cardiovascular Disease (Cardiology) and Interventional Cardiology. A 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 the clinician's services. Of these, 1 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Jeffrey J. Guttas, M.D. A Medical Corporation was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.