MRS. HYESOOK SONG FNP
NPI 1740069483
Nurse Practitioner - Family in Fullerton, CA
About Mrs. Hyesook Song Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. HYESOOK SONG FNP (NPI 1740069483) is an individual family provider in Fullerton, California, licensed in California (NP95025720) and active in the NPI registry since September 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2023).
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
Mrs. Hyesook Song Fnp 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
3Medicare enrollment records show Hyesook Song reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fullerton, CA 92832
- Reassigned Medicare billing, California enrollment
- 7 clinicians in this Medicare group
Fullerton, CA 92833
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Santa Ana, CA 92701
- Reassigned Medicare billing, California enrollment
- 20 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 92832 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Hyesook Song's NPI number?
The NPI number for Hyesook Song is 1740069483. It was assigned to this individual provider in the NPPES registry on September 22, 2023.
Where is Hyesook Song located?
Hyesook Song practices at 140 East Commonwealth Ave. Suite 100, Fullerton, CA 92832. The listed phone number is (714) 572-3900.
What is Hyesook Song's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Hyesook Song enrolled in Medicare?
Yes. Hyesook Song 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 Hyesook Song's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hyesook Song reassigns Medicare benefits to 3 organizations: Sunny Hills Medical Center Inc. (Fullerton, CA), Southern California Permanente Medical Group (Fullerton, CA) and Community Medicine 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 Hyesook Song'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 Hyesook Song was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mrs. Hyesook Song, FNP · NPI 1740069483
Family physician in Fullerton, California. Individual provider, active in the CMS NPPES registry since September 22, 2023.
## Identity
- **NPI:** 1740069483 (Entity type: Individual)
- **Enumerated:** September 22, 2023
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** NP95025720 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 140 EAST COMMONWEALTH AVE., SUITE 100, Fullerton, CA 92832
- **Phone:** (714) 572-3900
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Sunny Hills Medical Center Inc. (NPI 1750008017, Fullerton, CA); Southern California Permanente Medical Group (NPI 1336556059, Fullerton, CA); Community Medicine Inc. (NPI 1578136834, Santa Ana, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** August 6, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1740069483) · Data from the CMS NPPES public registry.