KATHRYN SIERRA
NPI 1508743253
Nurse Practitioner - Family in Madera, CA

Q: What is Kathryn Sierra's NPI number?

The NPI number for Kathryn Sierra is 1508743253. It was assigned to this individual provider in the NPPES registry on August 16, 2025. The provider is also known as Katie Sierra.

Q: What is Kathryn Sierra's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Q: When was this NPI record last updated?

The NPPES record for Kathryn Sierra was last updated on September 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.

Active since August 16, 2025PECOS Enrolled

344 E 6TH ST, MADERA, CA 93638(559) 664-4000(559) 479-4812 Get Directions Write a Review

NPPES record last updated: September 16, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 16, 2025, Aug 16, 2025 (2 updates tracked since 2025).

On this page

About Kathryn Sierra NPPES

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

KATHRYN SIERRA (NPI 1508743253) is an individual family provider in Madera, California, licensed in California (95035649) and active in the NPI registry since August 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1508743253

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameKATHRYN SIERRA

Location Address344 E 6TH STMadera, CA 93638-3631

Mailing Address344 E 6th StMadera, CA 93638-3631 · (559) 664-4000 · Fax (559) 479-4812

Phone(559) 664-4000

Fax(559) 479-4812

Sole ProprietorNo

Medical School CMSOtherGraduated 2025

Enumeration DateAugust 16, 2025

Last NPPES UpdateSeptember 16, 20252 updates tracked since enumeration

NPPES CertifiedSeptember 16, 2025

✔ NPI 1508743253 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LF0000X

License✔ Licensed in CA · 95035649

344 E 6TH ST, Madera, CA 93638

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Other Names 1

Other Name (5)Katie Sierra

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kathryn Sierra is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2961993548

PECOS Enrollment IDI20251216004975

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93638 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

$90.32 typical visit price

range $58.87 – $176.60

Typical copayment $22.58 (range $14.71 – $44.15)

Most-billed visit code 99203

Established Patient

$103.36 typical visit price

range $19.28 – $144.60

Typical copayment $25.84 (range $4.82 – $36.15)

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.

SOLEDAD REYES FNP-C

Nurse Practitioner (Family)

344 E 6TH ST
MADERA, CA 93638

Madera County (559) 666-4000

DANIELA IVONNE ULLOA

Dentist

344 E 6TH ST
MADERA, CA 93638

Madera County (559) 664-4000

ALONDRA JUAREZ

Social Worker (Clinical)

344 E 6TH ST
MADERA, CA 93638

Madera County (559) 664-4000

MADHURI SHUKLA APRN

Nurse Practitioner

344 E 6TH ST
MADERA, CA 93638

Madera County (559) 664-4000

HARJEET K GILL NP

Nurse Practitioner (Family)

344 E 6TH ST
MADERA, CA 93638

Madera County (559) 664-4000

CAROLINA GUTIERREZ GARCIA

Family Medicine

344 E 6TH ST
MADERA, CA 93638

Madera County (442) 228-0681

DR. GERARD N MAZO MD

General Practice

344 E 6TH ST
MADERA, CA 93638

Madera County (559) 664-4000

GUILLERMO SANDOVAL MD

Pediatrics

344 E 6TH ST
MADERA, CA 93638

Madera County (559) 664-4000

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 Kathryn Sierra's NPI number?

The NPI number for Kathryn Sierra is 1508743253. It was assigned to this individual provider in the NPPES registry on August 16, 2025. The provider is also known as Katie Sierra.

Where is Kathryn Sierra located?

Kathryn Sierra practices at 344 E 6th St, Madera, CA 93638. The listed phone number is (559) 664-4000.

What is Kathryn Sierra's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Kathryn Sierra enrolled in Medicare?

Yes. Kathryn Sierra is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Kathryn Sierra was last updated on September 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.