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

DR. BRENNA SOMMER DO
NPI 1497266811
Obstetrics & Gynecology in Pasadena, CA

Active since October 12, 2017PECOS Enrolled
625 S FAIR OAKS AVE STE 255, PASADENA, CA 91105(626) 304-2613(626) 585-0695 Get Directions Write a Review

NPPES record last updated: October 29, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 29, 2026, Oct 23, 2020, Sep 11, 2019 and 1 more (4 updates tracked since 2017).

About Dr. Brenna Sommer Do NPPES

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

DR. BRENNA SOMMER DO (NPI 1497266811) is an individual obstetrics & gynecology provider in Pasadena, California, licensed in California (20A17037) and active in the NPI registry since October 2017. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1497266811
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. BRENNA SOMMERCredential: DO
Location Address625 S FAIR OAKS AVE STE 255Pasadena, CA 91105-2666
Mailing Address4140 W 190th St Fl 2Torrance, CA 90504-5513 · (626) 304-2613
Phone(626) 304-2613
Fax(626) 585-0695
Sole ProprietorYes
Enumeration DateOctober 12, 2017
Last NPPES UpdateOctober 29, 20264 updates tracked since enumeration
NPPES CertifiedOctober 29, 2026
✔ NPI 1497266811 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · 20A17037
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
625 S FAIR OAKS AVE STE 255, Pasadena, CA 91105
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11945 Route 33Neptune City, NJ 07753-4859 · Phone (518) 810-1793
Location 21310 San Bernardino Rd Ste 210Upland, CA 91786-4979 · Phone (909) 579-0806

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Brenna Sommer Do 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 Brenna Sommer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Care For Womens Medical Group Inc
29 mi
Gynecology
15944 LOS SERRANOS COUNTRY CLUB DR, SUITE 230
Chino Hills, CA 91709
  • Reassigned Medicare billing, California enrollment
  • 6 clinicians in this Medicare group
NPI 1265857858 (909) 355-7855

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 91105 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EMILY YVONNE CHU MD
Obstetrics & Gynecology
625 S FAIR OAKS AVE STE 255
PASADENA, CA 91105
Los Angeles County (626) 304-2626
KIMESHIA THOMAS MD
Obstetrics & Gynecology
625 S FAIR OAKS AVE STE 255
PASADENA, CA 91105
Los Angeles County (626) 304-2613
DR. AUSTIN ELIZABETH MCEVOY MD
Obstetrics & Gynecology
625 S FAIR OAKS AVE STE 255
PASADENA, CA 91105
Los Angeles County (626) 304-2626
MARINA JICK NP
Nurse Practitioner
625 S FAIR OAKS AVE STE 255
PASADENA, CA 91105
Los Angeles County (626) 696-2747
DIANE KIYOKO GUERRERO RNC
Nurse Practitioner (Obstetrics & Gynecology)
625 S FAIR OAKS AVE STE 255
PASADENA, CA 91105
Los Angeles County (626) 304-2626
SHWETA SHAH D.O
Obstetrics & Gynecology
625 S FAIR OAKS AVE STE 255
PASADENA, CA 91105
Los Angeles County (626) 304-2626

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 Brenna Sommer's NPI number?

The NPI number for Brenna Sommer is 1497266811. It was assigned to this individual provider in the NPPES registry on October 12, 2017.

Where is Brenna Sommer located?

Brenna Sommer practices at 625 S Fair Oaks Ave Ste 255, Pasadena, CA 91105. The listed phone number is (626) 304-2613.

What is Brenna Sommer's specialty?

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

Is Brenna Sommer enrolled in Medicare?

Yes. Brenna Sommer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Brenna Sommer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brenna Sommer reassigns Medicare benefits to Care For Womens Medical Group Inc (Chino Hills, 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 Brenna Sommer'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 Brenna Sommer was last updated on October 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.