MISS ELLYN M PHAN M.D.
NPI 1972035350
Internal Medicine in Lakewood, CA
About Miss Ellyn M Phan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MISS ELLYN M PHAN M.D. (NPI 1972035350) is an individual internal medicine provider in Lakewood, California, licensed in California (A169745) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS and is a graduate of Other (2017).
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 and accepts Medicare assignment
Miss Ellyn M Phan 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
5Medicare enrollment records show Ellyn Phan reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cerritos, CA 90703
- Reassigned Medicare billing, California enrollment
- 235 clinicians in this Medicare group
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 948 clinicians in this Medicare group
West Hollywood, CA 90048
- Reassigned Medicare billing, California enrollment
- 175 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 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 90712 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Ellyn Phan's NPI number?
The NPI number for Ellyn Phan is 1972035350. It was assigned to this individual provider in the NPPES registry on April 3, 2017.
Where is Ellyn Phan located?
Ellyn Phan practices at 4447 Candlewood St, Lakewood, CA 90712. The listed phone number is (657) 241-9935.
What is Ellyn Phan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ellyn Phan enrolled in Medicare?
Yes. Ellyn Phan 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 Ellyn Phan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellyn Phan reassigns Medicare benefits to 5 organizations: Albion Medical Partners Of California West P C (Cerritos, CA), Memorialcare Medical Foundation (Fountain Valley, CA), Kansal Inc (West Hollywood, CA), Inpatient Specialists Of California, PC (San Bernardino, CA) and Hospitalist Medicine Physicians Of California, Inc (Apple Valley, 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 Ellyn 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 Ellyn Phan was last updated on June 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Miss Ellyn M Phan, M.D. · NPI 1972035350
Internal Medicine physician in Lakewood, California. Individual provider, active in the CMS NPPES registry since April 3, 2017.
## Identity
- **NPI:** 1972035350 (Entity type: Individual)
- **Enumerated:** April 3, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A169745 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4447 CANDLEWOOD ST, Lakewood, CA 90712-1736
- **Phone:** (657) 241-9935
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Albion Medical Partners Of California West P C (NPI 1073110607, Cerritos, CA); Memorialcare Medical Foundation (NPI 1205167350, Fountain Valley, CA); Kansal Inc (NPI 1043510183, West Hollywood, CA); Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA); Hospitalist Medicine Physicians Of California, Inc (NPI 1184663965, Apple Valley, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** June 7, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1972035350) · Data from the CMS NPPES public registry.