DR. NICHOLAS THOMAS NELSON M.D.
NPI 1235284803
Radiology - Vascular & Interventional Radiology in San Diego, CA
About Dr. Nicholas Thomas Nelson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS THOMAS NELSON M.D. (NPI 1235284803) is an individual vascular & interventional radiology provider in San Diego, California, licensed in Virginia (0101270681) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Great Falls Clinic Hospital, and is a graduate of Indiana University School Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Dr. Nicholas Thomas Nelson M.d. 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 Reassignments
2Medicare enrollment records show Nicholas Nelson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Great Falls, MT 59405
- Reassigned Medicare billing, Montana enrollment
- 163 clinicians in this Medicare group
Great Falls, MT 59405
- Reassigned Medicare billing, Montana enrollment
- 119 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Great Falls Clinic Hospital
Acute Care Hospitals · Great Falls, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92134 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 92134
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 Nicholas Nelson's NPI number?
The NPI number for Nicholas Nelson is 1235284803. It was assigned to this individual provider in the NPPES registry on January 24, 2007.
Where is Nicholas Nelson located?
Nicholas Nelson practices at 34800 Bob Wilson Dr Bldg 1, Radiology, San Diego, CA 92134. The listed phone number is (619) 532-8742.
What is Nicholas Nelson's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.
Is Nicholas Nelson enrolled in Medicare?
Yes. Nicholas Nelson 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 organizations bill Medicare for Nicholas Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Nelson reassigns Medicare benefits to 2 organizations: Cmsc, LLC (Great Falls, MT) and Great Falls Clinic LLC (Great Falls, MT). 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 Nicholas Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nicholas Nelson accept?
Health plans from Blue Cross and Blue Shield of Montana and Mountain Health CO-OP list Nicholas Nelson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Nicholas Nelson affiliated with any hospitals?
According to CMS data, Nicholas Nelson is affiliated with Great Falls Clinic Hospital.
When was this NPI record last updated?
The NPPES record for Nicholas Nelson was last updated on August 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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. Nicholas Thomas Nelson, M.D. · NPI 1235284803
Vascular & Interventional Radiology physician in San Diego, California. Individual provider, active in the CMS NPPES registry since January 24, 2007.
## Identity
- **NPI:** 1235284803 (Entity type: Individual)
- **Enumerated:** January 24, 2007
- **Primary specialty:** Radiology - Vascular & Interventional Radiology · taxonomy 2085R0204X
- **State license:** 0101270681 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 34800 BOB WILSON DR, BLDG 1, RADIOLOGY, San Diego, CA 92134
- **Phone:** (619) 532-8742
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Cmsc, LLC (NPI 1639109978, Great Falls, MT); Great Falls Clinic LLC (NPI 1801897780, Great Falls, MT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Indiana University School Of Medicine, class of 2006
## Record status
- **NPPES last updated:** August 1, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1235284803) · Data from the CMS NPPES public registry.