DR. ANN FALOR CALLAHAN MD
NPI 1093962847
Surgery in Torrance, CA
About Dr. Ann Falor Callahan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANN FALOR CALLAHAN MD (NPI 1093962847) is an individual surgery provider in Torrance, California, licensed in California (A112637) and active in the NPI registry since August 2008. She is enrolled in Medicare PECOS and maintains a secondary practice location in Minneapolis.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
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)
Dr. Ann Falor Callahan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Ann Callahan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Harbor City, CA 90710
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 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 90505 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
TORRANCE, CA 90505
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 Ann Callahan's NPI number?
The NPI number for Ann Callahan is 1093962847. It was assigned to this individual provider in the NPPES registry on August 23, 2008. The provider is also known as Dr. Ann Falor MD.
Where is Ann Callahan located?
Ann Callahan practices at 23451 Madison St Ste 340, Torrance, CA 90505. The listed phone number is (310) 373-6864.
What is Ann Callahan's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Ann Callahan enrolled in Medicare?
Yes. Ann Callahan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ann Callahan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Callahan reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Harbor City, CA) and Cedars-Sinai Medical Care Foundation (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 Ann Callahan'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 Ann Callahan was last updated on January 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.
# Dr. Ann Falor Callahan, MD · NPI 1093962847
Surgery physician in Torrance, California. Individual provider, active in the CMS NPPES registry since August 23, 2008.
## Identity
- **NPI:** 1093962847 (Entity type: Individual)
- **Enumerated:** August 23, 2008
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** A112637 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 23451 MADISON ST STE 340, Torrance, CA 90505-4762
- **Phone:** (310) 373-6864
## 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): Southern California Permanente Medical Group (NPI 1598797011, Harbor City, CA); Cedars-Sinai Medical Care Foundation (NPI 1316984388, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1093962847) · Data from the CMS NPPES public registry.