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CRISTINA MARIA ALVIRA MD
NPI 1992806210
Pediatrics - Pediatric Critical Care Medicine in San Francisco, CA

Active since September 26, 2006PECOS EnrolledAccepts Medicare Assignment
1975 4TH ST FL 4, SAN FRANCISCO, CA 94143(415) 476-5153 Get Directions Write a Review

NPPES record last updated: December 6, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 6, 2024, Apr 11, 2024 (2 updates tracked since 2024).

About Cristina Maria Alvira Md NPPES

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

CRISTINA MARIA ALVIRA MD (NPI 1992806210) is an individual pediatric critical care medicine provider in San Francisco, California, licensed in California (A72940) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (1999).

NPPES Registry Identity

NPI1992806210
Entity TypeIndividualFemale
Primary Taxonomy2080P0203X
Provider Legal NameCRISTINA MARIA ALVIRACredential: MD
Location Address1975 4TH ST FL 4San Francisco, CA 94143-2351
Mailing Address1975 4th St Fl 4San Francisco, CA 94143-2351 · (415) 476-5153
Phone(415) 476-5153
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 1999
Enumeration DateSeptember 26, 2006
Last NPPES UpdateDecember 6, 20242 updates tracked since enumeration
NPPES CertifiedDecember 6, 2024
✔ NPI 1992806210 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0203X
License✔ Licensed in CA · A72940
Definition
A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists.
Also ListedPediatricsTaxonomy 208000000X · License A72940 (CA)
1975 4TH ST FL 4, San Francisco, CA 94143
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Other Identifiers 1

Medicaid00A729400CA

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

Cristina Maria Alvira Md 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 ID5395772073
PECOS Enrollment IDI20050725000668
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

3

Medicare enrollment records show Cristina Alvira reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ucsf Pediatrics Associates
3.7 mi
Pediatrics
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 1,159 clinicians in this Medicare group
NPI 1376614016 (415) 353-2000
University Of California San Francisco
3.7 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
3.7 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Cristina Alvira's NPI number?

The NPI number for Cristina Alvira is 1992806210. It was assigned to this individual provider in the NPPES registry on September 26, 2006.

Where is Cristina Alvira located?

Cristina Alvira practices at 1975 4th St Fl 4, San Francisco, CA 94143. The listed phone number is (415) 476-5153.

What is Cristina Alvira's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is Cristina Alvira enrolled in Medicare?

Yes. Cristina Alvira 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 Cristina Alvira's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cristina Alvira reassigns Medicare benefits to 3 organizations: Ucsf Pediatrics Associates (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, 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 Cristina Alvira'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 Cristina Alvira was last updated on December 6, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.