DR. TOM S CHIANG M.D.
NPI 1346345758
Internal Medicine - Infectious Disease in Mission Hills, CA
About Dr. Tom S Chiang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TOM S CHIANG M.D. (NPI 1346345758) is an individual infectious disease provider in Mission Hills, California, licensed in California (C129801) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 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
Dr. Tom S Chiang M.d. 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 Reassignments
2Medicare enrollment records show Tom Chiang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Valencia, CA 91355
- Reassigned Medicare billing, California enrollment
- 684 clinicians in this Medicare group
Dallas, TX 75201
- Reassigned Medicare billing, Arizona and New Mexico enrollments
- 161 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 2
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 91345 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
MISSION HILLS, CA 91345
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 Tom Chiang's NPI number?
The NPI number for Tom Chiang is 1346345758. It was assigned to this individual provider in the NPPES registry on September 13, 2006. The provider is also known as Dr. Tom Chiang MD.
Where is Tom Chiang located?
Tom Chiang practices at 11333 Sepulveda Blvd, Mission Hills, CA 91345. The listed phone number is (818) 365-9531.
What is Tom Chiang's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Tom Chiang enrolled in Medicare?
Yes. Tom Chiang 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 organizations bill Medicare for Tom Chiang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tom Chiang reassigns Medicare benefits to 2 organizations: Providence Facey Medical Foundation (Valencia, CA) and Access Telecare, PLLC (Dallas, TX). Each 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 Tom Chiang'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 Tom Chiang was last updated on April 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.
# Dr. Tom S Chiang, M.D. · NPI 1346345758
Infectious Disease physician in Mission Hills, California. Individual provider, active in the CMS NPPES registry since September 13, 2006.
## Identity
- **NPI:** 1346345758 (Entity type: Individual)
- **Enumerated:** September 13, 2006
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** C129801 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 11333 SEPULVEDA BLVD, Mission Hills, CA 91345-1116
- **Phone:** (818) 365-9531
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Providence Facey Medical Foundation (NPI 1710031588, Valencia, CA); Access Telecare, PLLC (NPI 1013303080, Dallas, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** April 25, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1346345758) · Data from the CMS NPPES public registry.