Natalie S. Callander, MD

Medicare activity in 2024

Official CMS public-use data for Natalie S. Callander, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)433 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)294 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)191 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)142 services
5. Insertion of needle into vein for collection of blood sample (36415)52 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure62%
• High cholesterol49%
• Anxiety33%
• Arthritis31%
• Chronic kidney disease30%
• Depression23%

Hospitals where Natalie S. Callander works

Medicare's Facility Affiliation Data lists Natalie S. Callander at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520098

Practice locations

Addresses where Natalie S. Callander is enrolled with Medicare (CMS data updated October 2, 2026).

• 600 Highland AveMadison, WI 53792 (608) 263‑6400

Group practices

Medicare enrollment lists Natalie S. Callander as a member of this group (CMS data updated October 2, 2026).

• University of Wisconsin Medical Foundation Inc2,553 clinicians in the group

Specialties

• Hematopoietic Cell Transplantation and Cellular Therapyprimary
• Hematologyalso

Find other Hematopoietic Cell Transplantation and Cellular Therapy doctors in Wisconsin →

Other cell transplant specialists in Wisconsin

Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.

• Vaishalee P. Kenkre, MD
• Aric C. Hall, MD
• Melissa M. Azul, DO
• Ryan Mattison, MD
• Peiman Hematti, MD

All cell transplant specialists in Wisconsin →

Other clinicians in University of Wisconsin Medical Foundation Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Julia R. Berian, MD
• Matthew T. Lister, MD
• Stephanie A. Savage, MD
• Abigail Jebaraj, MD
• Daniela C. Constantinescu, MD
• Kelsey G. Alt, PA

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians