LOREN CASTELLON MD
NPI 1114555612
Obstetrics & Gynecology in Santa Monica, CA
About Loren Castellon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LOREN CASTELLON MD (NPI 1114555612) is an individual obstetrics & gynecology provider in Santa Monica, California, licensed in California (A197013) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2020).
NPPES Registry Identity
Specialties & Licenses
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 and accepts Medicare assignment
Loren Castellon 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 Reassignment
Medicare enrollment records show Loren Castellon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Monica, CA 90404
- Reassigned Medicare billing, California enrollment
- 461 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 90404 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA MONICA, CA 90404
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 Loren Castellon's NPI number?
The NPI number for Loren Castellon is 1114555612. It was assigned to this individual provider in the NPPES registry on March 30, 2020.
Where is Loren Castellon located?
Loren Castellon practices at 1301 20th St Ste 270, Santa Monica, CA 90404. The listed phone number is (310) 828-8585.
What is Loren Castellon's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Loren Castellon enrolled in Medicare?
Yes. Loren Castellon 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 Loren Castellon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Loren Castellon reassigns Medicare benefits to Providence Saint Johns Medical Foundation (Santa Monica, 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 Loren Castellon'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 Loren Castellon was last updated on September 25, 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.
# Loren Castellon, MD · NPI 1114555612
Obstetrics & Gynecology physician in Santa Monica, California. Individual provider, active in the CMS NPPES registry since March 30, 2020.
## Identity
- **NPI:** 1114555612 (Entity type: Individual)
- **Enumerated:** March 30, 2020
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A197013 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1301 20TH ST STE 270, Santa Monica, CA 90404-2053
- **Phone:** (310) 828-8585
## 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:** Providence Saint Johns Medical Foundation (NPI 1770093734, Santa Monica, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Albert Einstein College Of Medicine Of Yeshiva University, class of 2020
## Record status
- **NPPES last updated:** September 25, 2024
---
Source: [NPI Profile](https://npiprofile.com/npi/1114555612) · Data from the CMS NPPES public registry.