1. Home
  2. Directory
  3. California
  4. San Bernardino
  5. Anesthesiology
  6. NPI Profile

CHIMA SEAN NZEREM D.O.
NPI 1821386848
Anesthesiology in San Bernardino, CA

Active since July 11, 2011PECOS EnrolledAccepts Medicare Assignment
2101 N WATERMAN AVE, SAN BERNARDINO, CA 92404(909) 883-8711 Get Directions Write a Review

NPPES record last updated: May 4, 2016. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Chima Sean Nzerem D.o. NPPES

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

CHIMA SEAN NZEREM D.O. (NPI 1821386848) is an individual anesthesiology provider in San Bernardino, California, licensed in California (20A13808) and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS and is a graduate of Other (2010).

NPPES Registry Identity

NPI1821386848
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameCHIMA SEAN NZEREMCredential: D.O.
Location Address2101 N WATERMAN AVESan Bernardino, CA 92404-4836
Mailing Address210 N Tustin AveSanta Ana, CA 92705-3807 · (714) 347-1010 · Fax (714) 647-1245
Phone(909) 883-8711
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateJuly 11, 2011
Last NPPES UpdateMay 4, 2016
✔ NPI 1821386848 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · 20A13808
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
Open in Google Maps ↗

Other Identifiers 2

Medicare PINP01623283CA
Medicare PINCA160838CA

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

Chima Sean Nzerem D.o. 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 ID4284948282
PECOS Enrollment IDI20150804006295
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 Chima Nzerem reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Buena Vista Anesthesia Medical Group
60 mi
Anesthesiology
501 S BUENA VISTA ST
Burbank, CA 91505
  • Reassigned Medicare billing, California enrollment
  • 98 clinicians in this Medicare group
NPI 1366462293 (818) 843-5111

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 Chima Nzerem's NPI number?

The NPI number for Chima Nzerem is 1821386848. It was assigned to this individual provider in the NPPES registry on July 11, 2011.

Where is Chima Nzerem located?

Chima Nzerem practices at 2101 N Waterman Ave, San Bernardino, CA 92404. The listed phone number is (909) 883-8711.

What is Chima Nzerem's specialty?

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

Is Chima Nzerem enrolled in Medicare?

Yes. Chima Nzerem 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 Chima Nzerem's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chima Nzerem reassigns Medicare benefits to Buena Vista Anesthesia Medical Group (Burbank, 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 Chima Nzerem'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 Chima Nzerem was last updated on May 4, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.