MARC NIELSEN DO
NPI 1265601207
Family Medicine in Susanville, CA
About Marc Nielsen Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARC NIELSEN DO (NPI 1265601207) is an individual family medicine provider in Susanville, California, licensed in California (20A 10672) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Marc Nielsen Do 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
3Medicare enrollment records show Marc Nielsen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Susanville, CA 96130
- Reassigned Medicare billing, California enrollment
- 50 clinicians in this Medicare group
Chester, CA 96020
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1396848677 (California)
- 38 clinicians in this Medicare group
Portola, CA 96122
- Reassigned Medicare billing, California enrollment
- 58 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 96130 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
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 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SUSANVILLE, CA 96130
SUSANVILLE, CA 96130
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 Marc Nielsen's NPI number?
The NPI number for Marc Nielsen is 1265601207. It was assigned to this individual provider in the NPPES registry on February 25, 2008.
Where is Marc Nielsen located?
Marc Nielsen practices at 795 Joaquin St, Susanville, CA 96130. The listed phone number is (530) 257-2542.
What is Marc Nielsen's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Marc Nielsen enrolled in Medicare?
Yes. Marc Nielsen 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 Marc Nielsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marc Nielsen reassigns Medicare benefits to 3 organizations: Sierra ER Department Physicians Medical Group Inc. (Susanville, CA), Seneca Healthcare District (Chester, CA) and Eastern Plumas Health Care District (Portola, 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 Marc Nielsen'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 Marc Nielsen was last updated on September 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Marc Nielsen, DO · NPI 1265601207
Family Medicine physician in Susanville, California. Individual provider, active in the CMS NPPES registry since February 25, 2008.
## Identity
- **NPI:** 1265601207 (Entity type: Individual)
- **Enumerated:** February 25, 2008
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 20A 10672 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 795 JOAQUIN ST, Susanville, CA 96130-3628
- **Phone:** (530) 257-2542
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Sierra ER Department Physicians Medical Group Inc. (NPI 1033570247, Susanville, CA); Seneca Healthcare District (NPI 1104920438, Chester, CA); Eastern Plumas Health Care District (NPI 1245236850, Portola, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** September 21, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1265601207) · Data from the CMS NPPES public registry.