DR. MARIA ISABEL CASTELLANOS M.D.
NPI 1881013795
Pediatrics in San Francisco, CA

Q: What is Maria Castellanos's NPI number?

The NPI number for Maria Castellanos is 1881013795. It was assigned to this individual provider in the NPPES registry on April 8, 2014.

Q: What is Maria Castellanos's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Maria Castellanos was last updated on August 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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 April 08, 2014PECOS Enrolled

550 16TH ST, SAN FRANCISCO, CA 94143(415) 476-3831 Get Directions Write a Review

NPPES record last updated: August 14, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Aug 14, 2024, Jul 3, 2017 (2 updates tracked since 2017).

On this page

About Dr. Maria Isabel Castellanos M.d. NPPES

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

DR. MARIA ISABEL CASTELLANOS M.D. (NPI 1881013795) is an individual pediatrics provider in San Francisco, California, licensed in California (A138549) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS and maintains a secondary practice location in Oakland.

NPPES Registry Identity

NPI1881013795

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. MARIA ISABEL CASTELLANOSCredential: M.D.

Location Address550 16TH STSan Francisco, CA 94143-2549

Mailing Address1833 Calistoga DrSan Jose, CA 95124-1766 · (702) 672-8357

Phone(415) 476-3831

Sole ProprietorNo

Enumeration DateApril 8, 2014

Last NPPES UpdateAugust 14, 20242 updates tracked since enumeration

NPPES CertifiedAugust 14, 2024

✔ NPI 1881013795 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in CA · A138549

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Also ListedPediatrics · Pediatric Hematology-OncologyTaxonomy 2080P0207X · License 3961 (CA)

550 16TH ST, San Francisco, CA 94143

Open in Google Maps ↗

Secondary Practice Location 1

Location 1747 52nd StOakland, CA 94609-1809 · Phone (510) 428-3000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Maria Isabel Castellanos 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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. SHUNJI SANO MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)

550 16TH ST, FLR 5
SAN FRANCISCO, CA 94143

San Francisco County (415) 476-3535

MAYTAL FIRNBERG

Pediatrics (Pediatric Emergency Medicine)

550 16TH ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-1238

TIFFANY LYNNE BITTLE NNP-BC

Nurse Practitioner (Neonatal)

550 16TH ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-1565

MICHELLE RYBKA

Pediatrics

550 16TH ST, 4TH FLOOR, 4551, BOX 0110
SAN FRANCISCO, CA 94143

San Francisco County (415) 476-6245

MARA BAILEY-OLSON NP

Nurse Practitioner

550 16TH ST, 4TH FLOOR, MAILSTOP 0434
SAN FRANCISCO, CA 94143

San Francisco County (415) 476-2188

ALEXANDRA YASEMIN GOKSENIN MD/PHD

Pediatrics

550 16TH ST, 4TH FLOOR, 4551, BOX 0110
SAN FRANCISCO, CA 94143

San Francisco County (415) 476-6245

KYREE SKY

Pediatrics (Pediatric Critical Care Medicine)

550 16TH ST
SAN FRANCISCO, CA 94143

San Francisco County (678) 643-1557

DR. MARTIN THELIN MD, PHD

Pediatrics (Pediatric Endocrinology)

550 16TH ST, BOX 0110
SAN FRANCISCO, CA 94143

San Francisco County (415) 476-5001

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 Maria Castellanos's NPI number?

The NPI number for Maria Castellanos is 1881013795. It was assigned to this individual provider in the NPPES registry on April 8, 2014.

Where is Maria Castellanos located?

Maria Castellanos practices at 550 16th St, San Francisco, CA 94143. The listed phone number is (415) 476-3831.

What is Maria Castellanos's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Maria Castellanos enrolled in Medicare?

Yes. Maria Castellanos is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Maria Castellanos was last updated on August 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.