DR. JAN ANDRIES HERHOLDT MD
NPI 1558449538
Anesthesiology in Madison, WI
About Dr. Jan Andries Herholdt Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAN ANDRIES HERHOLDT MD (NPI 1558449538) is an individual anesthesiology provider in Madison, Wisconsin, licensed in Texas (V6183) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Jewish Hospital & St Mary's Healthcare, and maintains a secondary practice location in Louisville.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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. Jan Andries Herholdt 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
9Medicare enrollment records show Jan Herholdt reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Columbus, WI 53925
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Beaver Dam Community Hospitals Inc.
- 1,447 clinicians in this Medicare group
Wisconsin Rapids, WI 54494
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Neillsville, WI 54456
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1346239373 (Wisconsin)
- 1,440 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 clinicians in this Medicare group
Park Falls, WI 54552
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1700963048 (Wisconsin)
- 1,351 clinicians in this Medicare group
Louisville, KY 40202
- Reassigned Medicare billing, Kentucky enrollment
- 2,337 clinicians in this Medicare group
Princeton, WV 24740
- Reassigned Medicare billing, West Virginia enrollment
- 95 clinicians in this Medicare group
Arlington, TX 76006
- Reassigned Medicare billing, Texas enrollment
- 1,164 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.
Jewish Hospital & St Mary's Healthcare
Acute Care Hospitals · Louisville, KYMedicare 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.
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 Jan Herholdt's NPI number?
The NPI number for Jan Herholdt is 1558449538. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is Jan Herholdt located?
Jan Herholdt practices at 600 Highland Ave, Madison, WI 53792. The listed phone number is (608) 263-8100.
What is Jan Herholdt's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Jan Herholdt enrolled in Medicare?
Yes. Jan Herholdt 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 Jan Herholdt's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jan Herholdt reassigns Medicare benefits to 9 organizations: Beaver Dam Community Hosptials Inc (Columbus, WI), Mchs Hospitals Inc (Wisconsin Rapids, WI), Marshfield Clinic Inc (Marshfield, WI), Memorial Hospital Inc (Neillsville, WI), Lakeview Medical Center Inc Of Rice Lake (Chetek, WI) and 4 more organizations, listed in the Medicare section above. 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 Jan Herholdt's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jan Herholdt accept?
Health plans from Blue Cross and Blue Shield of Texas and Peak Health Insurance list Jan Herholdt 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 Jan Herholdt affiliated with any hospitals?
According to CMS data, Jan Herholdt is affiliated with Jewish Hospital & St Mary's Healthcare.
When was this NPI record last updated?
The NPPES record for Jan Herholdt was last updated on December 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Jan Andries Herholdt, MD · NPI 1558449538
Anesthesiology physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1558449538 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** V6183 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 HIGHLAND AVE, Madison, WI 53792-4294
- **Phone:** (608) 263-8100 · **Fax:** (608) 262-6247
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Beaver Dam Community Hosptials Inc (NPI 1275833659, Columbus, WI); Mchs Hospitals Inc (NPI 1568188589, Wisconsin Rapids, WI); Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); Memorial Hospital Inc (NPI 1033701800, Neillsville, WI); Lakeview Medical Center Inc Of Rice Lake (NPI 1659008605, Chetek, WI); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** December 8, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1558449538) · Data from the CMS NPPES public registry.