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ROBERTO DIAZ M.D.
NPI 1669453775
Obstetrics & Gynecology in Burlingame, CA

Active since November 07, 2005PECOS Enrolled
1828 EL CAMINO REAL, SUITE 601, BURLINGAME, CA 94010(650) 692-9111(650) 692-9114 Get Directions Write a Review

NPPES record last updated: November 14, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Roberto Diaz M.d. NPPES

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

ROBERTO DIAZ M.D. (NPI 1669453775) is an individual obstetrics & gynecology provider in Burlingame, California, licensed in California (A53002) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1669453775
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameROBERTO DIAZCredential: M.D.
Location Address1828 EL CAMINO REAL, SUITE 601Burlingame, CA 94010-3103
Mailing Address1828 El Camino Real, Suite 601Burlingame, CA 94010-3103 · (650) 692-9111 · Fax (650) 692-9114
Phone(650) 692-9111
Fax(650) 692-9114
Sole ProprietorYes
Enumeration DateNovember 7, 2005
Last NPPES UpdateNovember 14, 2007
✔ NPI 1669453775 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · A53002
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1828 EL CAMINO REAL, Burlingame, CA 94010
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Other Identifiers 3

Medicare ID-Type Unspecified00A530020CA
Medicaid00A530020CA
Medicare UPINF86611CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Roberto Diaz 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 Roberto Diaz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of San Mateo
2.7 mi
Adolescent and Children Mental Health
300 PIEDMONT AVE
San Bruno, CA 94066
  • Reassigned Medicare billing, California enrollment
  • 597 clinicians in this Medicare group
NPI 1215029087 (650) 583-8958

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 94010 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
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
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.

KENNETH T ROOST MD INC
Internal Medicine (Gastroenterology)
1828 EL CAMINO REAL, #604
BURLINGAME, CA 94010
San Mateo County (650) 697-9146
DR. BARBARA CONNER-ANDERSEN M.D.
Allergy & Immunology (Allergy)
1828 EL CAMINO REAL, SUITE 703
BURLINGAME, CA 94010
San Mateo County (650) 692-1892
DR. SHIRLEY ANN FONG O.D.
Optometrist
1828 EL CAMINO REAL, SUITE 404
BURLINGAME, CA 94010
San Mateo County (650) 692-8788
HENRY J LOW MEDICAL CORPORATION
Internal Medicine
1828 EL CAMINO REAL, SUITE 706
BURLINGAME, CA 94010
San Mateo County (650) 777-9117
DR. DOUGLAS H MILLER DDS
Dentist (General Practice)
1828 EL CAMINO REAL, SUITE # 810
BURLINGAME, CA 94010
San Mateo County (650) 692-0727
INTENTIONAL HEALTH, AN ACUPUNCTURE AND HOLISTIC HEALING CORP.
Acupuncturist
1828 EL CAMINO REAL, #401
BURLINGAME, CA 94010
San Mateo County (650) 648-3558
DR. ANDREW THOMAS NADELL M.D.
Psychiatry & Neurology (Psychiatry)
1828 EL CAMINO REAL, SUITE 509
BURLINGAME, CA 94010
San Mateo County (650) 697-6975
JNZ MEDICAL GROUP, INC.
Acupuncturist
1828 EL CAMINO REAL, STE. 804
BURLINGAME, CA 94010
San Mateo County (650) 580-8697

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 Roberto Diaz's NPI number?

The NPI number for Roberto Diaz is 1669453775. It was assigned to this individual provider in the NPPES registry on November 7, 2005.

Where is Roberto Diaz located?

Roberto Diaz practices at 1828 El Camino Real Suite 601, Burlingame, CA 94010. The listed phone number is (650) 692-9111.

What is Roberto Diaz's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Roberto Diaz enrolled in Medicare?

Yes. Roberto Diaz is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Roberto Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Roberto Diaz reassigns Medicare benefits to County Of San Mateo (San Bruno, 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 Roberto Diaz'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 Roberto Diaz was last updated on November 14, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.