MARK A BISIGNANI MD
NPI 1487655882
Radiology - Radiation Oncology in Ukiah, CA
About Mark A Bisignani Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK A BISIGNANI MD (NPI 1487655882) is an individual radiation oncology provider in Ukiah, California, licensed in California (G151223) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, maintains a secondary practice location in Edina, and is a graduate of University Of Pittsburgh School Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 10
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
Mark A Bisignani Md 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 Mark Bisignani reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Santa Rosa, CA 95405
- Reassigned Medicare billing, California enrollment
- 1,699 clinicians in this Medicare group
Edina, MN 55439
- Reassigned Medicare billing, Minnesota and Wisconsin enrollments
- 20 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 12
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 95482 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
UKIAH, CA 95482
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 Bisignani's NPI number?
The NPI number for Mark Bisignani is 1487655882. It was assigned to this individual provider in the NPPES registry on August 9, 2005.
Where is Mark Bisignani located?
Mark Bisignani practices at 1165 S Dora St, Ukiah, CA 95482. The listed phone number is (707) 463-3636.
What is Mark Bisignani's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Mark Bisignani enrolled in Medicare?
Yes. Mark Bisignani 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 Mark Bisignani's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Bisignani reassigns Medicare benefits to 2 organizations: Providence Medical Foundation (Santa Rosa, CA) and Minneapolis Radiation Oncology PA (Edina, MN). 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 Bisignani'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 Bisignani was last updated on November 28, 2023. 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.