RYAN ANDREW BARRERA MD
NPI 1043770191
Anesthesiology in San Francisco, CA

Q: What is Ryan Barrera's NPI number?

The NPI number for Ryan Barrera is 1043770191. It was assigned to this individual provider in the NPPES registry on March 24, 2019.

Q: What is Ryan Barrera's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for Ryan Barrera was last updated on March 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 March 24, 2019PECOS Enrolled

513 PARNASSUS AVE # S436, SAN FRANCISCO, CA 94143(415) 353-1297(415) 353-1990 Get Directions Write a Review

NPPES record last updated: March 17, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 17, 2025, Mar 24, 2019 (2 updates tracked since 2019).

On this page

About Ryan Andrew Barrera Md NPPES

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

RYAN ANDREW BARRERA MD (NPI 1043770191) is an individual anesthesiology provider in San Francisco, California, licensed in California (A186756) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and maintains a secondary practice location in Houston.

NPPES Registry Identity

NPI1043770191

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameRYAN ANDREW BARRERACredential: MD

Location Address513 PARNASSUS AVE # S436San Francisco, CA 94143-2205

Mailing Address513 Parnassus Ave # S436San Francisco, CA 94143-2205 · (415) 353-1297 · Fax (415) 353-1990

Phone(415) 353-1297

Fax(415) 353-1990

Sole ProprietorNo

Enumeration DateMarch 24, 2019

Last NPPES UpdateMarch 17, 20252 updates tracked since enumeration

NPPES CertifiedMarch 17, 2025

✔ NPI 1043770191 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in CA · A186756

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

513 PARNASSUS AVE # S436, San Francisco, CA 94143

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Secondary Practice Location 1

Location 11 Baylor PlzHouston, TX 77030-3411 · Phone (713) 798-4951

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ryan Andrew Barrera Md 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 Reassignments

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

Ucsf Medical Group Business Services

Same address

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

University Of California San Francisco

Same address

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
5,645 clinicians in this Medicare group

NPI 1164512851 (415) 476-1000

University Anesthesia Medical Group

0.1 mi

Anesthesiology

505 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
723 clinicians in this Medicare group

NPI 1528137296 (415) 476-1000

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447

This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.

11 services11 patients

Other Providers at the Same Location NPPES 17

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

JOYCE CHANG M.D.

Anesthesiology