1. Home
  2. Directory
  3. California
  4. Oakland
  5. Nurse Practitioner
  6. NPI Profile

MICHELLE CORTEZ
NPI 1427417237
Nurse Practitioner - Pediatrics in Oakland, CA

Active since February 22, 2016PECOS Enrolled
3451 E 12TH ST, OAKLAND, CA 94601(510) 535-3500 Get Directions Write a Review

NPPES record last updated: December 11, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 11, 2018, Feb 22, 2016 (2 updates tracked since 2016).

About Michelle Cortez NPPES

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

MICHELLE CORTEZ (NPI 1427417237) is an individual pediatrics provider in Oakland, California, licensed in California (95003350) and active in the NPI registry since February 2016. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1427417237
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameMICHELLE CORTEZ
Location Address3451 E 12TH STOakland, CA 94601-3463
Mailing Address3451 E 12th StOakland, CA 94601-3463 · (510) 535-3500
Phone(510) 535-3500
Sole ProprietorNo
Enumeration DateFebruary 22, 2016
Last NPPES UpdateDecember 11, 20182 updates tracked since enumeration
✔ NPI 1427417237 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in CA · 95003350
3451 E 12TH ST, Oakland, CA 94601
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

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

La Clinica De La Raza Inc
Same address
Federally Qualified Health Center (FQHC)
3451 E 12TH ST
Oakland, CA 94601
  • Reassigned Medicare billing, California enrollment
  • 187 clinicians in this Medicare group
NPI 1144336181 (510) 535-4000

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 94601 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
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.

DR. KEN MAKIO MARRINER M.D.
Family Medicine
3451 E 12TH ST
OAKLAND, CA 94601
Alameda County (510) 535-3500
MS. MARSHA L GUBSER LCSW
Social Worker (Clinical)
3451 E 12TH ST
OAKLAND, CA 94601
Alameda County (925) 363-2005
REBECCA RUSH RN
Registered Nurse (Community Health)
3451 E 12TH ST
OAKLAND, CA 94601
Alameda County (510) 535-3735
MONICA SAN BASILIO FNP
Nurse Practitioner
3451 E 12TH ST
OAKLAND, CA 94601
Alameda County (510) 535-3500
SIVAN SADEH FNP-C
Nurse Practitioner (Family)
3451 E 12TH ST
OAKLAND, CA 94601
Alameda County (510) 535-3500
ANNA GABRIELA YCAZA RN,FNP-C
Nurse Practitioner (Family)
3451 E 12TH ST
OAKLAND, CA 94601
Alameda County (510) 535-2940
LAYLA WELBORN FNP
Nurse Practitioner (Family)
3451 E 12TH ST
OAKLAND, CA 94601
Alameda County (510) 535-3500
DR. JESSIE LIU MD
Hospitalist
3451 E 12TH ST
OAKLAND, CA 94601
Alameda County (510) 535-3500

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 Michelle Cortez's NPI number?

The NPI number for Michelle Cortez is 1427417237. It was assigned to this individual provider in the NPPES registry on February 22, 2016.

Where is Michelle Cortez located?

Michelle Cortez practices at 3451 E 12th St, Oakland, CA 94601. The listed phone number is (510) 535-3500.

What is Michelle Cortez's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Michelle Cortez enrolled in Medicare?

Yes. Michelle Cortez is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Michelle Cortez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Cortez reassigns Medicare benefits to La Clinica De La Raza Inc (Oakland, 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 Michelle Cortez'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 Michelle Cortez was last updated on December 11, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.