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JONATHAN T KETZLER MD
NPI 1275509754
Anesthesiology - Critical Care Medicine in Madison, WI

Active since February 24, 2006PECOS EnrolledAccepts Medicare Assignment
600 HIGHLAND AVE, MADISON, WI 53792(608) 263-8100(608) 263-0575 Get Directions Write a Review

NPPES record last updated: May 4, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 4, 2023, Jan 7, 2021, Aug 1, 2018 (3 updates tracked since 2018).

About Jonathan T Ketzler Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JONATHAN T KETZLER MD (NPI 1275509754) is an individual critical care medicine provider in Madison, Wisconsin, licensed in Wisconsin (34982) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Nebraska College Of Medicine (1992).

NPPES Registry Identity

NPI1275509754
Entity TypeIndividualMale
Primary Taxonomy207LC0200X
Provider Legal NameJONATHAN T KETZLERCredential: MD
Location Address600 HIGHLAND AVEMadison, WI 53792
Mailing Address7974 Uw Health CtMiddleton, WI 53562-5531
Phone(608) 263-8100
Fax(608) 263-0575
Sole ProprietorNo
Medical School CMSUniversity Of Nebraska College Of MedicineGraduated 1992
Enumeration DateFebruary 24, 2006
Last NPPES UpdateMay 4, 20233 updates tracked since enumeration
NPPES CertifiedMay 4, 2023
✔ NPI 1275509754 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyAnesthesiology · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207LC0200X
License✔ Licensed in WI · 34982
Definition
An anesthesiologist, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedAnesthesiologyTaxonomy 207L00000X · License 34982 (WI)
Also ListedAnesthesiology · Pain MedicineTaxonomy 207LP2900X · License 34982 (WI)
600 HIGHLAND AVE, Madison, WI 53792
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Group Health Cooperative-SCW.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

Jonathan T Ketzler 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.

PECOS PAC ID3375672397
PECOS Enrollment IDI20100528000524
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

6

Medicare enrollment records show Jonathan Ketzler reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Wisconsin Medical Foundation, Inc
4.8 mi
Multi-Specialty
7974 UW HEALTH COURT
Middleton, WI 53562
  • Reassigned Medicare billing, Wisconsin enrollment
  • 2,832 clinicians in this Medicare group
NPI 1598784555 (608) 829-5485
Southwest Health Center, Inc.
45 mi
Optometrist
133 PERFORMANCE DRIVE
Darlington, WI 53530
  • Reassigned Medicare billing, Wisconsin enrollment
  • 175 clinicians in this Medicare group
NPI 1811511272 (608) 776-4413
Freeport Regional Health Care Foundation
54 mi
Family Medicine
1036 W STEPHENSON ST
Freeport, IL 61032
  • Reassigned Medicare billing, Illinois enrollment
  • 391 clinicians in this Medicare group
NPI 1457337016 (815) 599-6000
Freeport Memorial Hospital
54 mi
General Acute Care Hospital
1045 W STEPHENSON ST
Freeport, IL 61032
  • Reassigned Medicare billing, Illinois and Wisconsin enrollments
  • 478 clinicians in this Medicare group
NPI 1447228788 (815) 599-6000
Black River Health Inc
111 mi
Medicare Defined Swing Bed Unit
711 W ADAMS ST
Black River Falls, WI 54615
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1811940331 (Wisconsin)
  • 227 clinicians in this Medicare group
NPI 1003914011 (715) 284-5361
Aspirus Medford Hospital & Clinics, Inc.
138 mi
Rural Health
729 PINE ST
Athens, WI 54411
  • Reassigned Medicare billing, Wisconsin enrollment
  • 376 clinicians in this Medicare group
NPI 1760912919 (715) 748-8100

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

JASON ALAN CHRISTENSEN PHARMD
Pharmacist
600 HIGHLAND AVE, COMPLIANCE MAIL CODE 2433
MADISON, WI 53792
Dane County (608) 662-0817
LAURA JEAN KOPPLIN MD, PHD
Ophthalmology
600 HIGHLAND AVE
MADISON, WI 53792
Dane County (608) 263-6070
HAGGI MAZEH MD
Surgery
600 HIGHLAND AVE
MADISON, WI 53792
Dane County (608) 265-8072
DR. SWAPNIL SUNIL LANJEWAR M.D.
Internal Medicine (Infectious Disease)
600 HIGHLAND AVE
MADISON, WI 53792
Dane County (608) 263-0946
DR. MATTHEW JAMES HOYT M.D.
Anesthesiology
600 HIGHLAND AVE
MADISON, WI 53792
Dane County (608) 263-8100
VANESSA MERCEDES WELTEN MD MPH
Transplant Surgery
600 HIGHLAND AVE
MADISON, WI 53792
Dane County (617) 732-5500
JOHN HENRY NORMAN HARRISON
Anesthesiology
600 HIGHLAND AVE
MADISON, WI 53792
Dane County (608) 263-8100
PIPPA FROUKTE COSPER MD
Radiology (Radiation Oncology)
600 HIGHLAND AVE
MADISON, WI 53792
Dane County (608) 263-8500

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 Jonathan Ketzler's NPI number?

The NPI number for Jonathan Ketzler is 1275509754. It was assigned to this individual provider in the NPPES registry on February 24, 2006.

Where is Jonathan Ketzler located?

Jonathan Ketzler practices at 600 Highland Ave, Madison, WI 53792. The listed phone number is (608) 263-8100.

What is Jonathan Ketzler's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.

Is Jonathan Ketzler enrolled in Medicare?

Yes. Jonathan Ketzler 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 Jonathan Ketzler's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Ketzler reassigns Medicare benefits to 6 organizations: University Of Wisconsin Medical Foundation, Inc (Middleton, WI), Southwest Health Center, Inc. (Darlington, WI), Freeport Regional Health Care Foundation (Freeport, IL), Freeport Memorial Hospital (Freeport, IL), Black River Health Inc (Black River Falls, WI) and 1 more organization, 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 Jonathan Ketzler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jonathan Ketzler accept?

Health plans from Group Health Cooperative-SCW list Jonathan Ketzler 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 Jonathan Ketzler was last updated on May 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.