TATIANA GELLEIN
NPI 1538523394
Pediatrics in West Hollywood, CA
About Tatiana Gellein NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TATIANA GELLEIN (NPI 1538523394) is an individual pediatrics provider in West Hollywood, California, licensed in California (A155443) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS and maintains a secondary practice location in Los Angeles.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Tatiana Gellein is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Tatiana Gellein reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 clinicians in this Medicare group
Los Angeles, CA 90038
- Reassigned Medicare billing, California enrollment
- 1,939 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 90048 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.
WEST HOLLYWOOD, CA 90048
WEST HOLLYWOOD, CA 90048
WEST HOLLYWOOD, CA 90048
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 Tatiana Gellein's NPI number?
The NPI number for Tatiana Gellein is 1538523394. It was assigned to this individual provider in the NPPES registry on April 7, 2016.
Where is Tatiana Gellein located?
Tatiana Gellein practices at 8700 Beverly Blvd, West Hollywood, CA 90048. The listed phone number is (310) 967-1884.
What is Tatiana Gellein's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Tatiana Gellein enrolled in Medicare?
Yes. Tatiana Gellein is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Tatiana Gellein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tatiana Gellein reassigns Medicare benefits to 2 organizations: Cedars-Sinai Medical Care Foundation (Los Angeles, CA) and County Of Los Angeles (Los Angeles, 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 Tatiana Gellein'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 Tatiana Gellein was last updated on October 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Tatiana Gellein · NPI 1538523394
Pediatrics physician in West Hollywood, California. Individual provider, active in the CMS NPPES registry since April 7, 2016.
## Identity
- **NPI:** 1538523394 (Entity type: Individual)
- **Enumerated:** April 7, 2016
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A155443 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 8700 BEVERLY BLVD, West Hollywood, CA 90048
- **Phone:** (310) 967-1884
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Cedars-Sinai Medical Care Foundation (NPI 1043826720, Los Angeles, CA); County Of Los Angeles (NPI 1083808836, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 3, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1538523394) · Data from the CMS NPPES public registry.