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CHYANSONG J TZAN MD
NPI 1184612210
Anesthesiology in Glendora, CA

Active since October 12, 2005PECOS Enrolled
95/100
CMS Quality Rating
250 S GRAND AVE, GLENDORA, CA 91741(626) 963-8411 Get Directions Write a Review

NPPES record last updated: September 20, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Chyansong J Tzan Md NPPES

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

CHYANSONG J TZAN MD (NPI 1184612210) is an individual anesthesiology provider in Glendora, California, licensed in California (C52948) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184612210
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameCHYANSONG J TZANCredential: MD
Location Address250 S GRAND AVEGlendora, CA 91741-4218
Mailing AddressPo Box 788Hemet, CA 92546-0788 · (951) 929-6260 · Fax (951) 765-2855
Phone(626) 963-8411
Sole ProprietorYes
Enumeration DateOctober 12, 2005
Last NPPES UpdateSeptember 20, 2016
✔ NPI 1184612210 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in CA · C52948✔ Licensed in TX · L0669
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.
250 S GRAND AVE, Glendora, CA 91741
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Other Identifiers 5

Medicare PINBB850ZCA
Medicare PINP00672382CA
Medicare PIN8268M0TX
Medicare PIN050077325TX
Medicare UPING60770TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Chyansong J Tzan 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 Reassignment

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

Austin Anesthesiology Group, PLLC
1,205 mi
Anesthesiology
8140 N MOPAC EXPY STE 3-210
Austin, TX 78759
  • Reassigned Medicare billing, Texas enrollment
  • 840 clinicians in this Medicare group
NPI 1598724304 (512) 343-2292

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

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

95/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality88.9
Improvement Activities40
Cost70.34

Reported Quality Measures

Pre-operative OSA assessment
Percentage of patients who undergo a surgical procedure in the operating room/procedure room that have a pre-operative assessment for Obstructive Sleep Apnea (OSA)
50%320 patients2/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

MENALAM HEALTH SERVICES PC
Radiology (Diagnostic Radiology)
250 S GRAND AVE
GLENDORA, CA 91741
Los Angeles County (626) 963-8411
DR. JOHN JOSEPH DIMARE JR. M.D.
Family Medicine (Geriatric Medicine)
250 S GRAND AVE
GLENDORA, CA 91741
Los Angeles County (626) 857-3242
WEI LI MD A MEDICAL CORPORATION
Anesthesiology
250 S GRAND AVE
GLENDORA, CA 91741
Los Angeles County (909) 592-0198
PRAVEENA YETUR MD
Pathology (Anatomic Pathology & Clinical Pathology)
250 S GRAND AVE
GLENDORA, CA 91741
Los Angeles County (626) 857-3201
CEP AMERICA - CALIFORNIA
Emergency Medicine
250 S GRAND AVE
GLENDORA, CA 91741
Los Angeles County (626) 963-8411
JAMMY LAY BSN,RN
Registered Nurse (Emergency)
250 S GRAND AVE
GLENDORA, CA 91741
Los Angeles County (626) 857-3180
YAN WANG MD
Pathology (Anatomic Pathology & Clinical Pathology)
250 S GRAND AVE
GLENDORA, CA 91741
Los Angeles County (626) 857-3120
MARTIN A. BOHORQUEZ M.D.
Anesthesiology
250 S GRAND AVE
GLENDORA, CA 91741
Los Angeles County (909) 519-0063

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 Chyansong Tzan's NPI number?

The NPI number for Chyansong Tzan is 1184612210. It was assigned to this individual provider in the NPPES registry on October 12, 2005.

Where is Chyansong Tzan located?

Chyansong Tzan practices at 250 S Grand Ave, Glendora, CA 91741. The listed phone number is (626) 963-8411.

What is Chyansong Tzan's specialty?

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

Is Chyansong Tzan enrolled in Medicare?

Yes. Chyansong Tzan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Chyansong Tzan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chyansong Tzan reassigns Medicare benefits to Austin Anesthesiology Group, PLLC (Austin, TX). 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 Chyansong Tzan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Chyansong Tzan accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Chyansong Tzan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Chyansong Tzan was last updated on September 20, 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.