DR. JOHN L CHEN D.O.
NPI 1649356023
Anesthesiology in Fontana, CA

Active since October 28, 2006PECOS EnrolledAccepts Medicare Assignment
9961 SIERRA AVE, FONTANA, CA 92335(909) 427-2673(909) 427-5219 Get Directions Write a Review

NPPES record last updated: November 30, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. John L Chen D.o. NPPES

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

DR. JOHN L CHEN D.O. (NPI 1649356023) is an individual anesthesiology provider in Fontana, California, licensed in California (20A9401) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2003).

NPPES Registry Identity

NPI1649356023
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. JOHN L CHENCredential: D.O.
Location Address9961 SIERRA AVEFontana, CA 92335-6720
Mailing Address808 Brigham Young DrClaremont, CA 91711-2074 · (909) 625-5909 · Fax (909) 625-5909
Fax(909) 427-5219
Sole ProprietorYes
Medical School CMSOtherGraduated 2003
Enumeration DateOctober 28, 2006
Last NPPES UpdateNovember 30, 2021
NPPES CertifiedNovember 30, 2021
NPI 1649356023 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License Licensed in CA · 20A9401
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.
9961 SIERRA AVE, Fontana, CA 92335

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. John L Chen 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 ID4880751684
PECOS Enrollment IDI20090323000454
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.

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.

Physical Therapist
9961 SIERRA AVE, BUILDING 3A
FONTANA, CA 92335
Pediatrics
9961 SIERRA AVE, KAISER PERMANENTE FONTANA - PEDIATRICS
FONTANA, CA 92335
Pharmacist
9961 SIERRA AVE
FONTANA, CA 92335
Dietitian, Registered
9961 SIERRA AVE
FONTANA, CA 92335
Nurse Anesthetist, Certified Registered
9961 SIERRA AVE
FONTANA, CA 92335
Nurse Practitioner
9961 SIERRA AVE
FONTANA, CA 92335
Nurse Practitioner
9961 SIERRA AVE
FONTANA, CA 92335
Family Medicine
9961 SIERRA AVE
FONTANA, CA 92335

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 John Chen's NPI number?

The NPI number for John Chen is 1649356023. It was assigned to this individual provider in the NPPES registry on October 28, 2006.

Where is John Chen located?

John Chen practices at 9961 Sierra Ave, Fontana, CA 92335. The listed phone number is (909) 427-2673.

What is John Chen's specialty?

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

Is John Chen enrolled in Medicare?

Yes. John Chen 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.

When was this NPI record last updated?

The NPPES record for John Chen was last updated on November 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.