JAMES G LINN M.D.
NPI 1710983275
Obstetrics & Gynecology in Milwaukee, WI
About James G Linn M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES G LINN M.D. (NPI 1710983275) is an individual obstetrics & gynecology provider in Milwaukee, Wisconsin, licensed in Wisconsin (25841) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 7
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
James G Linn M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show James Linn reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53211
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
- 856 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Obhg Wisconsin Sc
- 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 53211 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
MILWAUKEE, WI 53211
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 James Linn's NPI number?
The NPI number for James Linn is 1710983275. It was assigned to this individual provider in the NPPES registry on June 21, 2005.
Where is James Linn located?
James Linn practices at 2311 N Prospect Ave, Milwaukee, WI 53211. The listed phone number is (414) 319-3000.
What is James Linn's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is James Linn enrolled in Medicare?
Yes. James Linn is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for James Linn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Linn reassigns Medicare benefits to 2 organizations: Columbia St. Mary's Hospital Milwaukee Inc (Milwaukee, WI) and Obhg Wisconsin, S.C. (Greenville, SC). 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 James Linn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does James Linn accept?
Health plans from Anthem Blue Cross and Blue Shield, CareSource (Common Ground Healthcare), Network Health and Quartz list James Linn 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.
When was this NPI record last updated?
The NPPES record for James Linn was last updated on June 12, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# James G Linn, M.D. · NPI 1710983275
Obstetrics & Gynecology physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since June 21, 2005.
## Identity
- **NPI:** 1710983275 (Entity type: Individual)
- **Enumerated:** June 21, 2005
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 25841 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2311 N PROSPECT AVE, Milwaukee, WI 53211-4445
- **Phone:** (414) 319-3000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Columbia St. Mary's Hospital Milwaukee Inc (NPI 1225071491, Milwaukee, WI); Obhg Wisconsin, S.C. (NPI 1699273862, Greenville, SC) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 12, 2012
- **Other identifiers:** Medicare OSCAR/certification 521830 (WI); Medicaid 30603200 (WI); Medicare UPIN B54611 (WI); and 4 more
---
Source: [NPI Profile](https://npiprofile.com/npi/1710983275) · Data from the CMS NPPES public registry.