GREGORY J. SONG MD
NPI 1124195086
Anesthesiology in Baldwin Park, CA
About Gregory J. Song Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY J. SONG MD (NPI 1124195086) is an individual anesthesiology provider in Baldwin Park, California, licensed in California (G81291) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Gregory J. Song Md 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 Gregory Song reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baldwin Park, CA 91706
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Los Angeles, CA 90045
- Reassigned Medicare billing, California enrollment
- 14 clinicians in this Medicare group
Honolulu, HI 96819
- Reassigned Medicare billing, Hawaii enrollment
- 1,187 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.
BALDWIN PARK, CA 91706
BALDWIN PARK, CA 91706
BALDWIN PARK, CA 91706
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 Gregory Song's NPI number?
The NPI number for Gregory Song is 1124195086. It was assigned to this individual provider in the NPPES registry on November 29, 2006.
Where is Gregory Song located?
Gregory Song practices at 1011 Baldwin Park Blvd, Baldwin Park, CA 91706. The listed phone number is (626) 851-1011.
What is Gregory Song's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Gregory Song enrolled in Medicare?
Yes. Gregory 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 Gregory Song's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Song reassigns Medicare benefits to 3 organizations: Southern California Permanente Medical Group (Baldwin Park, CA), Bright Anesthesia A Professional Corporation (Los Angeles, CA) and Hawaii Permanente Medical Group Inc (Honolulu, HI). 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 Gregory Song's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Song accept?
Health plans from Kaiser Permanente list Gregory Song as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Gregory Song was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Gregory J. Song, MD · NPI 1124195086
Anesthesiology physician in Baldwin Park, California. Individual provider, active in the CMS NPPES registry since November 29, 2006.
## Identity
- **NPI:** 1124195086 (Entity type: Individual)
- **Enumerated:** November 29, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** G81291 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1011 BALDWIN PARK BLVD, Baldwin Park, CA 91706-5806
- **Phone:** (626) 851-1011
## 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): Southern California Permanente Medical Group (NPI 1770515280, Baldwin Park, CA); Bright Anesthesia A Professional Corporation (NPI 1518858356, Los Angeles, CA); Hawaii Permanente Medical Group Inc (NPI 1710945969, Honolulu, HI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Southern California Keck School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** November 29, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1124195086) · Data from the CMS NPPES public registry.