ANDY TIEN M.D.
NPI 1790217800
Student in an Organized Health Care Education/Training Program in Los Angeles, CA
About Andy Tien M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDY TIEN M.D. (NPI 1790217800) is an individual student in an organized health care education/training program in Los Angeles, California and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS and is a graduate of Eastern Virginia Medical School (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
Andy Tien 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 Reassignment
Medicare enrollment records show Andy Tien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1396287082 (California)
- 13,921 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.
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
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 Andy Tien's NPI number?
The NPI number for Andy Tien is 1790217800. It was assigned to this individual provider in the NPPES registry on March 29, 2017.
Where is Andy Tien located?
Andy Tien practices at 4733 W Sunset Blvd Fl 3, Los Angeles, CA 90027. The listed phone number is (833) 574-2273.
What is Andy Tien's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Andy Tien enrolled in Medicare?
Yes. Andy Tien 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 organization bills Medicare for Andy Tien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andy Tien reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, CA). 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 Andy Tien'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 Andy Tien was last updated on December 3, 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.
# Andy Tien, M.D. · NPI 1790217800
Student in an Organized Health Care Education/Training Program provider in Los Angeles, California. Individual provider, active in the CMS NPPES registry since March 29, 2017.
## Identity
- **NPI:** 1790217800 (Entity type: Individual)
- **Enumerated:** March 29, 2017
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** 4733 W SUNSET BLVD FL 3, Los Angeles, CA 90027-6021
- **Phone:** (833) 574-2273
## 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:** Southern California Permanente Medical Group (NPI 1134151657, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Eastern Virginia Medical School, class of 2017
## Record status
- **NPPES last updated:** December 3, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1790217800) · Data from the CMS NPPES public registry.