NATHAN KARL SANDBO M.D.
NPI 1679775316
Internal Medicine - Pulmonary Disease in Madison, WI
About Nathan Karl Sandbo M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NATHAN KARL SANDBO M.D. (NPI 1679775316) is an individual pulmonary disease provider in Madison, Wisconsin, licensed in Wisconsin (55881) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with Uw Health, and is a graduate of University Of Minnesota Medical School (2000).
NPPES Registry Identity
Specialties & Licenses 3
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
Nathan Karl Sandbo 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
4Medicare enrollment records show Nathan Sandbo reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 clinicians in this Medicare group
Darlington, WI 53530
- Reassigned Medicare billing, Wisconsin enrollment
- 175 clinicians in this Medicare group
Freeport, IL 61032
- Reassigned Medicare billing, Wisconsin enrollment
- 17 clinicians in this Medicare group
Black River Falls, WI 54615
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1811940331 (Wisconsin)
- 227 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 9
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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Uw Health
Acute Care Hospitals · Rockford, ILSsm Health St Clare Hospital - Baraboo
Acute Care Hospitals · Baraboo, WIUnitypoint Health - Meriter
Acute Care Hospitals · Madison, WIUniversity Of Wi Hospitals & Clinics Authority
Acute Care Hospitals · Madison, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53792 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 3
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.
MADISON, WI 53792
MADISON, WI 53792
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 Nathan Sandbo's NPI number?
The NPI number for Nathan Sandbo is 1679775316. It was assigned to this individual provider in the NPPES registry on June 4, 2007.
Where is Nathan Sandbo located?
Nathan Sandbo practices at 600 Highland Ave, Madison, WI 53792. The listed phone number is (608) 263-7203.
What is Nathan Sandbo's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Nathan Sandbo enrolled in Medicare?
Yes. Nathan Sandbo 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 Nathan Sandbo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nathan Sandbo reassigns Medicare benefits to 4 organizations: University Of Wisconsin Medical Foundation, Inc (Middleton, WI), Southwest Health Center, Inc. (Darlington, WI), Freeport Memorial Hospital (Freeport, IL) and Black River Health Inc (Black River Falls, WI). 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 Nathan Sandbo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nathan Sandbo accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW, HealthPartners and Quartz and 1 other insurer list Nathan Sandbo 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 Nathan Sandbo affiliated with any hospitals?
According to CMS data, Nathan Sandbo is affiliated with Uw Health, Ssm Health St Clare Hospital - Baraboo, Unitypoint Health - Meriter and University Of Wi Hospitals & Clinics Authority.
When was this NPI record last updated?
The NPPES record for Nathan Sandbo was last updated on January 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Nathan Karl Sandbo, M.D. · NPI 1679775316
Pulmonary Disease physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since June 4, 2007.
## Identity
- **NPI:** 1679775316 (Entity type: Individual)
- **Enumerated:** June 4, 2007
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 55881 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 HIGHLAND AVE, Madison, WI 53792-0001
- **Phone:** (608) 263-7203
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI); Southwest Health Center, Inc. (NPI 1811511272, Darlington, WI); Freeport Memorial Hospital (NPI 1447228788, Freeport, IL); Black River Health Inc (NPI 1003914011, Black River Falls, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 2000
## Record status
- **NPPES last updated:** January 5, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1679775316) · Data from the CMS NPPES public registry.