Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARIELA NEVAREZ
NPI 1992387468
Obstetrics & Gynecology in San Francisco, CA

Active since April 24, 2021PECOS EnrolledAccepts Medicare Assignment
1001 PORTRERO AVE, SAN FRANCISCO, CA 94110(415) 206-4069 Get Directions Write a Review

NPPES record last updated: October 8, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 8, 2026, Sep 2, 2025, Apr 24, 2021 (3 updates tracked since 2021).

About Mariela Nevarez NPPES

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

MARIELA NEVAREZ (NPI 1992387468) is an individual obstetrics & gynecology provider in San Francisco, California, licensed in California (A197844) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of California, Geffen School Of Medicine (2021).

NPPES Registry Identity

NPI1992387468
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameMARIELA NEVAREZ
Location Address1001 PORTRERO AVESan Francisco, CA 94110-3518
Mailing Address1001 Portrero AveSan Francisco, CA 94110-3518 · (415) 206-4069
Sole ProprietorNo
Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2021
Enumeration DateApril 24, 2021
Last NPPES UpdateOctober 8, 20263 updates tracked since enumeration
NPPES CertifiedOctober 8, 2026
✔ NPI 1992387468 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 · A197844
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.
1001 PORTRERO AVE, San Francisco, CA 94110

Secondary Practice Locations 2

Location 1828 W Ventura StFillmore, CA 93015-1876 · Phone (805) 524-2000
Location 22000 Outlet Center Dr Ste 110Oxnard, CA 93036-0608 · Phone (805) 604-4588

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mariela Nevarez is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476932872
PECOS Enrollment IDI20251023004891
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 Reassignments

2

Medicare enrollment records show Mariela Nevarez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Federally Qualified Health Center (FQHC)
133 W. SANTA CLARA
Ventura, CA 93001
  • Reassigned Medicare billing, California enrollment
  • 710 clinicians in this Medicare group
Clinic/Center
335 E AVENUE I
Lancaster, CA 93535
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of Los Angeles
  • 435 clinicians in this Medicare group

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 94110 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.

Surgery (Surgical Critical Care)
1001 PORTRERO AVE, BLDG. 5, 3M
SAN FRANCISCO, CA 94110
Student in an Organized Health Care Education/Training Program
1001 PORTRERO AVE
SAN FRANCISCO, CA 94110
Registered Nurse (Addiction (Substance Use Disorder))
1001 PORTRERO AVE
SAN FRANCISCO, CA 94110
Emergency Medicine
1001 PORTRERO AVE, RM 1E21
SAN FRANCISCO, CA 94110
Student in an Organized Health Care Education/Training Program
1001 PORTRERO AVE, BLDG 80-83
SAN FRANCISCO, CA 94110
Student in an Organized Health Care Education/Training Program
1001 PORTRERO AVE, BLDG 80-83
SAN FRANCISCO, CA 94110
Anesthesiology
1001 PORTRERO AVE
SAN FRANCISCO, CA 94110
Surgery
1001 PORTRERO AVE
SAN FRANCISCO, CA 94110

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 Mariela Nevarez's NPI number?

The NPI number for Mariela Nevarez is 1992387468. It was assigned to this individual provider in the NPPES registry on April 24, 2021.

Where is Mariela Nevarez located?

Mariela Nevarez practices at 1001 Portrero Ave, San Francisco, CA 94110. The listed phone number is (415) 206-4069.

What is Mariela Nevarez's specialty?

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

Is Mariela Nevarez enrolled in Medicare?

Yes. Mariela Nevarez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Mariela Nevarez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mariela Nevarez reassigns Medicare benefits to 2 organizations: County Of Ventura (Ventura, CA) and County Of Los Angeles Auditor Controller (Lancaster, CA). Each 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 Mariela Nevarez'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 Mariela Nevarez was last updated on October 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days 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.