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GATEWAY MEDICAL GROUP OF SAN DIEGO
NPI 1568400455
Family Medicine in Chula Vista, CA

Active since June 03, 2006CLIA 05D1097031 · Waiver
752 MEDICAL CENTER CT, SUITE 210, CHULA VISTA, CA 91911(619) 527-7700(619) 527-3226 Get Directions Write a Review

NPPES record last updated: August 19, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gateway Medical Group Of San Diego NPPES

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

GATEWAY MEDICAL GROUP OF SAN DIEGO (NPI 1568400455), doing business as Gateway Medical Group, is a healthcare organization registered as a family medicine in Chula Vista, California and active in the NPI registry since June 2006. The organization holds a CLIA Waiver certificate valid through June 15, 2027 and lists Ronald D Sanzone, President, as its authorized official.

NPPES Registry Identity

NPI1568400455
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameGATEWAY MEDICAL GROUP OF SAN DIEGO
Location Address752 MEDICAL CENTER CT, SUITE 210Chula Vista, CA 91911-6658
Mailing Address286 Euclid Ave, Suite 207San Diego, CA 92114-3610 · (619) 527-7700 · Fax (619) 527-3226
Phone(619) 527-7700
Fax(619) 527-3226
Organization SubpartNo
Authorized OfficialRonald D SanzonePresident · (619) 527-7700
Enumeration DateJune 3, 2006
Last NPPES UpdateAugust 19, 2009
✔ NPI 1568400455 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · W13278
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
752 MEDICAL CENTER CT, Chula Vista, CA 91911
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Other Names 1

Former Legal Business NameGateway Medical Group

Other Identifiers 2

Medicare ID-Type UnspecifiedW13278CA · Group
MedicaidGR0062450CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Gateway Medical Group Of San Diego is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Gateway Medical Group Of San Diego, which bills Medicare for the services they deliver. Of these, 4 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

Merritt Matthews, MD
Family Practice
NPI 1720024755
610 EUCLID AVE SUITE 302
National City, CA 91950
(619) 527-7700
✔ PECOS5.8 mi
Joseph Novencido, D.O.
Family Practice
NPI 1619239118
610 EUCLID AVENUE STE 302
National City, CA 91950
(619) 527-7700
✔ PECOS✔ Accepts Medicare5.8 mi
Ronald Sanzone, DO
Family Practice
NPI 1457393381
610 EUCLID AVE STE 302
National City, CA 91950
(619) 527-7700
✔ PECOS✔ Accepts Medicare5.8 mi
Sandra De Roldan, NP
Nurse Practitioner
NPI 1235479627
610 EUCLID AVE SUITE 302
National City, CA 91950
(619) 527-7700
✔ PECOS5.8 mi

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

CLIA Laboratory Certificates CMS CLIA 2

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D1097031

Gateway Medical Group Of San Diego · Chula Vista, CA
Active · expires Jun 15, 2027
CLIA Number05D1097031
Laboratory TypePhysician Office
Certificate Effective DateJune 16, 2025
Certificate Expiration DateJune 15, 2027
Laboratory DirectorRafael Garcia
Laboratory Phone(619) 656-0203
Laboratory LocationGateway Medical Group Of San Diego752 Medical Center Court Ste 210, Chula Vista, CA 91911
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 05D0871767

Gateway Medical Group Of San Diego · National City, CA
Expired · Oct 31, 2026
CLIA Number05D0871767
Laboratory TypePhysician Office
Certificate Effective DateNovember 1, 2024
Certificate Expiration DateOctober 31, 2026
Laboratory DirectorRonald D. Sanzone
Laboratory Phone(619) 527-7700
Laboratory LocationGateway Medical Group Of San Diego610 Euclid Ave Ste 302, National City, CA 91950
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Gateway Medical Group Of San Diego's NPI number?

The NPI number for Gateway Medical Group Of San Diego is 1568400455. It was assigned to this organization in the NPPES registry on June 3, 2006. The provider was formerly known as Gateway Medical Group.

Where is Gateway Medical Group Of San Diego located?

Gateway Medical Group Of San Diego is located at 752 Medical Center Ct Suite 210, Chula Vista, CA 91911. The listed phone number is (619) 527-7700.

What is Gateway Medical Group Of San Diego's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Gateway Medical Group Of San Diego enrolled in Medicare?

Yes. Gateway Medical Group Of San Diego is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gateway Medical Group Of San Diego?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Gateway Medical Group Of San Diego. 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. The largest specialties are Family Practice (3) and Nurse Practitioner (1). Of these, 4 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Gateway Medical Group Of San Diego hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D1097031) is associated with this NPI, valid through June 15, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Gateway Medical Group Of San Diego was last updated on August 19, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.