DR. DAVID I-FENG HSU MD
NPI 1619983343
Radiology - Radiation Oncology in Monterey Park, CA
About Dr. David I-feng Hsu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID I-FENG HSU MD (NPI 1619983343) is an individual radiation oncology provider in Monterey Park, California, licensed in California (A83121) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Creighton University School Of Medicine (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. David I-feng Hsu Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show David Hsu reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Monterey Park, CA 91754
- Reassigned Medicare billing, California enrollment
- 3 clinicians in this Medicare group
Los Alamitos, CA 90720
- Reassigned Medicare billing, California enrollment
- 10 clinicians in this Medicare group
Sherman Oaks, CA 91403
- Reassigned Medicare billing, California enrollment
- 12 clinicians in this Medicare group
Santa Ana, CA 92705
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Tony N Nakhla Do Inc
- 5 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 16
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 91754 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MONTEREY PARK, CA 91754
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 David Hsu's NPI number?
The NPI number for David Hsu is 1619983343. It was assigned to this individual provider in the NPPES registry on August 1, 2006.
Where is David Hsu located?
David Hsu practices at 605 N Garfield Ave, Monterey Park, CA 91754. The listed phone number is (626) 571-6100.
What is David Hsu's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is David Hsu enrolled in Medicare?
Yes. David Hsu is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for David Hsu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Hsu reassigns Medicare benefits to 4 organizations: Ahmc International Cancer Center A Medical Corporation (Monterey Park, CA), Parham Tabibian MD Inc (Los Alamitos, CA), American Skin Institute Inc. (Sherman Oaks, CA) and Tony N. Nakhla, D.O., Inc. (Santa Ana, CA). 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 David Hsu'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 David Hsu was last updated on March 6, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. David I-Feng Hsu, MD · NPI 1619983343
Radiation Oncology physician in Monterey Park, California. Individual provider, active in the CMS NPPES registry since August 1, 2006.
## Identity
- **NPI:** 1619983343 (Entity type: Individual)
- **Enumerated:** August 1, 2006
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** A83121 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 605 N GARFIELD AVE, Monterey Park, CA 91754-1102
- **Phone:** (626) 571-6100 · **Fax:** (626) 571-6101
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Ahmc International Cancer Center A Medical Corporation (NPI 1336431600, Monterey Park, CA); Parham Tabibian MD Inc (NPI 1427114032, Los Alamitos, CA); American Skin Institute Inc. (NPI 1023377082, Sherman Oaks, CA); Tony N. Nakhla, D.O., Inc. (NPI 1730411794, Santa Ana, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Creighton University School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** March 6, 2012
- **Other identifiers:** Medicare UPIN I17035 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1619983343) · Data from the CMS NPPES public registry.