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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ALLISON ANDERSON MD
NPI 1376846642
Anesthesiology in San Bernardino, CA

Active since December 08, 2010PECOS Enrolled
2101 N WATERMAN AVE, SAN BERNARDINO, CA 92404(909) 742-2689 Get Directions Write a Review

NPPES record last updated: October 22, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 17, 2024, Jul 31, 2017 (2 updates tracked since 2017).

About Dr. Allison Anderson Md NPPES

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

DR. ALLISON ANDERSON MD (NPI 1376846642) is an individual anesthesiology provider in San Bernardino, California, licensed in California (A131348) and active in the NPI registry since December 2010. She is enrolled in Medicare PECOS, maintains a secondary practice location in Tucson, and is a graduate of University Of Arizona College Of Medicine (2010).

NPPES Registry Identity

NPI1376846642
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameDR. ALLISON ANDERSONCredential: MD
Location Address2101 N WATERMAN AVESan Bernardino, CA 92404-4836
Mailing Address450 Mamaroneck Ave Ste 201Harrison, NY 10528-2436 · (909) 742-2689
Phone(909) 742-2689
Sole ProprietorNo
Medical School CMSUniversity Of Arizona College Of MedicineGraduated 2010
Enumeration DateDecember 8, 2010
Last NPPES UpdateOctober 22, 20262 updates tracked since enumeration
NPPES CertifiedOctober 22, 2026
✔ NPI 1376846642 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in CA · A131348✔ Licensed in AZ · 50346
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.
2101 N WATERMAN AVE, San Bernardino, CA 92404
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Other Names 1

Former Name (1)Allison Castro Md

Secondary Practice Location 1

Location 12810 N Swan Rd Ste 100Tucson, AZ 85712-6300 · Phone (520) 324-2030 · Fax (520) 445-6019

Other Identifiers 1

Medicaid034707AZ

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

Dr. Allison Anderson 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 ID8022322577
PECOS Enrollment IDI20250121000182
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 Reassignment

Medicare enrollment records show Allison Anderson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Palm Springs Anesthesia Services, PC
Same address
Anesthesiology
2101 N WATERMAN AVE
San Bernardino, CA 92404
  • Reassigned Medicare billing, California enrollment
  • 270 clinicians in this Medicare group
NPI 1083928501 (914) 491-9495

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.

NICHOLAS WALTHER PA-C
Physician Assistant (Medical)
2101 N WATERMAN AVE
SAN BERNARDINO, CA 92404
San Bernardino County (909) 883-8711
DR. GIAN CHRISTIAN TONGSON IGNACIO MD
Student in an Organized Health Care Education/Training Program
2101 N WATERMAN AVE
SAN BERNARDINO, CA 92404
San Bernardino County (818) 282-2085
FASIHA NAZIR
Student in an Organized Health Care Education/Training Program
2101 N WATERMAN AVE
SAN BERNARDINO, CA 92404
San Bernardino County (909) 883-8711
DEVAL DAVE PA
Physician Assistant
2101 N WATERMAN AVE
SAN BERNARDINO, CA 92404
San Bernardino County (909) 883-8711
ALYSSA HOGUE
Pharmacy Technician
2101 N WATERMAN AVE
SAN BERNARDINO, CA 92404
San Bernardino County (909) 883-8711
DR. ARIN VANESSA COLLIN MD
Student in an Organized Health Care Education/Training Program
2101 N WATERMAN AVE
SAN BERNARDINO, CA 92404
San Bernardino County (909) 883-8711
DAVID D. TITO M.D.
Emergency Medicine
2101 N WATERMAN AVE
SAN BERNARDINO, CA 92404
San Bernardino County (909) 883-8711
ROBERT DEVORE, JR., M.D., INC
Anesthesiology
2101 N WATERMAN AVE
SAN BERNARDINO, CA 92404
San Bernardino County (800) 883-7243

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 Allison Anderson's NPI number?

The NPI number for Allison Anderson is 1376846642. It was assigned to this individual provider in the NPPES registry on December 8, 2010. The provider is also known as Allison Castro MD.

Where is Allison Anderson located?

Allison Anderson practices at 2101 N Waterman Ave, San Bernardino, CA 92404. The listed phone number is (909) 742-2689.

What is Allison Anderson's specialty?

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

Is Allison Anderson enrolled in Medicare?

Yes. Allison Anderson 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 organization bills Medicare for Allison Anderson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Allison Anderson reassigns Medicare benefits to Palm Springs Anesthesia Services, PC (San Bernardino, CA). The 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 Allison Anderson'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 Allison Anderson was last updated on October 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 days 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.