DR. TIMOTHY TRUONG PHAMDUY DO
NPI 1033572680
Pediatrics - Pediatric Emergency Medicine in San Diego, CA
About Dr. Timothy Truong Phamduy Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TIMOTHY TRUONG PHAMDUY DO (NPI 1033572680) is an individual pediatric emergency medicine provider in San Diego, California, licensed in California (20A25641) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS and maintains a secondary practice location in Murrieta.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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. Timothy Truong Phamduy Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Timothy Phamduy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Dayton, OH 45404
- Reassigned Medicare billing, Ohio enrollment
- Medicare enrollment name: Dayton Childrens Specialty Physicians Inc
- 479 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.
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.
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
SAN DIEGO, CA 92123
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 Timothy Phamduy's NPI number?
The NPI number for Timothy Phamduy is 1033572680. It was assigned to this individual provider in the NPPES registry on March 31, 2016.
Where is Timothy Phamduy located?
Timothy Phamduy practices at 3020 Childrens Way, San Diego, CA 92123. The listed phone number is (858) 966-8800.
What is Timothy Phamduy's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.
Is Timothy Phamduy enrolled in Medicare?
Yes. Timothy Phamduy is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Timothy Phamduy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Phamduy reassigns Medicare benefits to Dayton Children's Specialty Physicians, Inc. (Dayton, OH). 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 Timothy Phamduy'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 Timothy Phamduy was last updated on October 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days 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. Timothy Truong Phamduy, DO · NPI 1033572680
Pediatric Emergency Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since March 31, 2016.
## Identity
- **NPI:** 1033572680 (Entity type: Individual)
- **Enumerated:** March 31, 2016
- **Primary specialty:** Pediatrics - Pediatric Emergency Medicine · taxonomy 2080P0204X
- **State license:** 20A25641 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3020 CHILDRENS WAY, San Diego, CA 92123-4223
- **Phone:** (858) 966-8800
## 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:** Dayton Children's Specialty Physicians, Inc. (NPI 1225192610, Dayton, OH), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 1, 2026
- **Other identifiers:** Medicaid 0021551 (OH)
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Source: [NPI Profile](https://npiprofile.com/npi/1033572680) · Data from the CMS NPPES public registry.