CATHERINE CHANG-SUEN D.O.
NPI 1205201621
Pathology - Anatomic Pathology & Clinical Pathology in Pomona, CA
About Catherine Chang-suen D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE CHANG-SUEN D.O. (NPI 1205201621) is an individual anatomic pathology & clinical pathology provider in Pomona, California, licensed in California (20A14605) and active in the NPI registry since December 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
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
Catherine Chang-suen 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.
Medicare Billing Reassignment
Medicare enrollment records show Catherine Chang-suen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Pomona Valley, CA 91767
- Reassigned Medicare billing, California enrollment
- 3 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91767 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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.
POMONA, CA 91767
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 Catherine Chang-suen's NPI number?
The NPI number for Catherine Chang-suen is 1205201621. It was assigned to this individual provider in the NPPES registry on December 10, 2015.
Where is Catherine Chang-suen located?
Catherine Chang-suen practices at 1798 N Garey Ave, Pomona, CA 91767. The listed phone number is (909) 865-9500.
What is Catherine Chang-suen's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Catherine Chang-suen enrolled in Medicare?
Yes. Catherine Chang-suen 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 Catherine Chang-suen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Chang-suen reassigns Medicare benefits to Pvch Clinical Laboratory Medical Group Inc (Pomona Valley, 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 Catherine Chang-suen'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 Catherine Chang-suen was last updated on March 18, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Catherine Chang-Suen, D.O. · NPI 1205201621
Anatomic Pathology & Clinical Pathology physician in Pomona, California. Individual provider, active in the CMS NPPES registry since December 10, 2015.
## Identity
- **NPI:** 1205201621 (Entity type: Individual)
- **Enumerated:** December 10, 2015
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** 20A14605 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1798 N GAREY AVE, Pomona, CA 91767-2918
- **Phone:** (909) 865-9500
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Pvch Clinical Laboratory Medical Group Inc (NPI 1235265851, Pomona Valley, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** March 18, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1205201621) · Data from the CMS NPPES public registry.