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OLIVIA WELKER MD
NPI 1851929566
Anesthesiology in San Diego, CA

Active since March 29, 2020PECOS EnrolledAccepts Medicare Assignment
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR, SAN DIEGO, CA 92134(509) 240-7665 Get Directions Write a Review

NPPES record last updated: January 14, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 25, 2024, Aug 18, 2023, Jan 23, 2023 and 1 more (4 updates tracked since 2020).

About Olivia Welker Md NPPES

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

OLIVIA WELKER MD (NPI 1851929566) is an individual anesthesiology provider in San Diego, California, licensed in California (A199393) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Orange, and is a graduate of Uniformed Services Uhs Fe Hebert School Of Med (2020).

NPPES Registry Identity

NPI1851929566
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameOLIVIA WELKERCredential: MD
Location AddressNAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DRSan Diego, CA 92134-5000
Mailing Address200 Mercy CircleOceanside, CA 92055 · (760) 725-1288
Phone(509) 240-7665
Sole ProprietorNo
Medical School CMSUniformed Services Uhs Fe Hebert School Of MedGraduated 2020
Enumeration DateMarch 29, 2020
Last NPPES UpdateJanuary 14, 20254 updates tracked since enumeration
NPPES CertifiedJanuary 14, 2025
✔ NPI 1851929566 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in CA · A199393✔ Licensed in VA · 0101272953
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.
Also ListedMilitary Health Care ProviderTaxonomy 171000000X · License 0101272953 (VA)
Also ListedGeneral PracticeTaxonomy 208D00000X · License 0101272953 (VA)
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR, San Diego, CA 92134
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Secondary Practice Location 1

Location 1101 The City Dr SOrange, CA 92868-3201 · Phone (714) 456-8888

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

Olivia Welker 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 ID4587193628
PECOS Enrollment IDI20250117003186
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 Olivia Welker reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Equanimity Anesthesia Professional Corporation
16 mi
Anesthesiology
11368 STONEMONT PT
San Diego, CA 92131
  • Reassigned Medicare billing, California enrollment
  • 16 clinicians in this Medicare group
NPI 1942024393 (717) 576-1196
Regents Of The University Of
85 mi
Anesthesiology
101 THE CITY DR SOUTH
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 420 clinicians in this Medicare group
NPI 1487602546 (714) 456-8068
Regents Of The Univ Of Ca
469 mi
Clinical Child & Adolescent
2825 50TH ST
Sacramento, CA 95817
  • Reassigned Medicare billing, California enrollment
  • 2,570 clinicians in this Medicare group
NPI 1447423959 (916) 703-0315

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

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.

MIEN THUY LE
Nurse Anesthetist, Certified Registered
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (717) 424-3663
MARY-KATE C MEKHAIL MD
Pediatrics
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (617) 694-9052
KEVIN HEALY
Physical Therapist
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (913) 488-1538
DR. HALEY DODSON MD
Emergency Medicine
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (727) 542-4041
ALYSSA ASHLEY TAYLOR MD
General Practice
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (810) 407-4713
LAURA SAMANTHA KRAEMER MD
Military Health Care Provider
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (805) 215-3928
TAWNEY NAKAMURA MD
Military Health Care Provider
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 534-6400
MR. PHILIP FAGAN III MD
General Practice
NAVAL MEDICAL CENTER SAN DIEGO 38400 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (412) 951-9701

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 Olivia Welker's NPI number?

The NPI number for Olivia Welker is 1851929566. It was assigned to this individual provider in the NPPES registry on March 29, 2020.

Where is Olivia Welker located?

Olivia Welker practices at Naval Medical Center San Diego 38400 Bob Wilson Dr, San Diego, CA 92134. The listed phone number is (509) 240-7665.

What is Olivia Welker's specialty?

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

Is Olivia Welker enrolled in Medicare?

Yes. Olivia Welker 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 Olivia Welker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Olivia Welker reassigns Medicare benefits to 3 organizations: Equanimity Anesthesia Professional Corporation (San Diego, CA), Regents Of The University Of (Orange, CA) and Regents Of The Univ Of Ca (Sacramento, 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 Olivia Welker'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 Olivia Welker was last updated on January 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.