DR. CHRISTOPHER MARTIN BLACKWELL MD
NPI 1740740125
Radiology - Diagnostic Radiology in San Diego, CA
About Dr. Christopher Martin Blackwell Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTOPHER MARTIN BLACKWELL MD (NPI 1740740125) is an individual diagnostic radiology provider in San Diego, California, licensed in California (A195432) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, maintains 5 additional practice locations, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 5
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Christopher Martin Blackwell Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Christopher Blackwell reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 360 clinicians in this Medicare group
Glendale, CA 91204
- Reassigned Medicare billing, California enrollment
- 181 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 129 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92103 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.
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
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 Christopher Blackwell's NPI number?
The NPI number for Christopher Blackwell is 1740740125. It was assigned to this individual provider in the NPPES registry on March 22, 2019.
Where is Christopher Blackwell located?
Christopher Blackwell practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (800) 926-8273.
What is Christopher Blackwell's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Christopher Blackwell enrolled in Medicare?
Yes. Christopher Blackwell is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Christopher Blackwell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Blackwell reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (San Diego, CA), Bay Imaging Consultants Medical Group (Glendale, CA), John Muir Trauma Physicians Billing Service (Walnut Creek, CA) and John Muir Magnetic Imaging Center (Walnut Creek, 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 Christopher Blackwell'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 Christopher Blackwell was last updated on June 4, 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.