MARK FREDRICKSON MD
NPI 1962519959
Physical Medicine & Rehabilitation in San Antonio, TX
About Mark Fredrickson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK FREDRICKSON MD (NPI 1962519959) is an individual physical medicine & rehabilitation provider in San Antonio, Texas, licensed in Texas (K9535) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mark Fredrickson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mark Fredrickson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 3,111 clinicians in this Medicare group
Fargo, ND 58104
- Reassigned Medicare billing, Texas enrollment
- 35 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.
Referred Medical Equipment & Supplies CMS DME claims 15
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
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 Mark Fredrickson's NPI number?
The NPI number for Mark Fredrickson is 1962519959. It was assigned to this individual provider in the NPPES registry on August 24, 2006.
Where is Mark Fredrickson located?
Mark Fredrickson practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 257-1400.
What is Mark Fredrickson's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Mark Fredrickson enrolled in Medicare?
Yes. Mark Fredrickson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Fredrickson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Fredrickson reassigns Medicare benefits to 2 organizations: Ut Physicians (Houston, TX) and Pam Physician Enterprise (Fargo, ND). 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 Mark Fredrickson'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 Mark Fredrickson was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.