DR. DOUGLAS H. PHAN M.D.
NPI 1366671992
Psychiatry & Neurology - Psychiatry in Riverside, CA
About Dr. Douglas H. Phan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DOUGLAS H. PHAN M.D. (NPI 1366671992) is an individual psychiatry provider in Riverside, California, licensed in California (A114481) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Douglas H. Phan M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Douglas Phan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Riverside, CA 92507
- Reassigned Medicare billing, California enrollment
- 336 clinicians in this Medicare group
Norco, CA 92860
- Reassigned Medicare billing, California enrollment
- 91 clinicians in this Medicare group
Garden Grove, CA 92841
- Reassigned Medicare billing, California enrollment
- 12 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92507 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.
RIVERSIDE, CA 92507
RIVERSIDE, CA 92507
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 Douglas Phan's NPI number?
The NPI number for Douglas Phan is 1366671992. It was assigned to this individual provider in the NPPES registry on July 2, 2009.
Where is Douglas Phan located?
Douglas Phan practices at 769 W Blaine St Suite B, Riverside, CA 92507. The listed phone number is (951) 358-4705.
What is Douglas Phan's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Douglas Phan enrolled in Medicare?
Yes. Douglas Phan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Douglas Phan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Phan reassigns Medicare benefits to 3 organizations: County Of Riverside (Riverside, CA), Central City Community Health Center Inc (Norco, CA) and Nhan Hoa Comprenesive Health Care Clinic Inc. (Garden Grove, 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 Douglas Phan'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 Douglas Phan was last updated on October 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.
# Dr. Douglas H. Phan, M.D. · NPI 1366671992
Psychiatry physician in Riverside, California. Individual provider, active in the CMS NPPES registry since July 2, 2009.
## Identity
- **NPI:** 1366671992 (Entity type: Individual)
- **Enumerated:** July 2, 2009
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** A114481 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 769 W BLAINE ST, SUITE B, Riverside, CA 92507-3970
- **Phone:** (951) 358-4705
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): County Of Riverside (NPI 1063528891, Riverside, CA); Central City Community Health Center Inc (NPI 1033488416, Norco, CA); Nhan Hoa Comprenesive Health Care Clinic Inc. (NPI 1497889158, Garden Grove, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 20, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1366671992) · Data from the CMS NPPES public registry.