Andrew A. Hollatz, MD

Medicare activity in 2024

Official CMS public-use data for Andrew A. Hollatz, 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. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)59 services
2. Anesthesia for other procedure on large bowel using an endoscope (00811)50 services
3. Anesthesia for electroshock therapy (00104)41 services
4. Anesthesia for lens surgery (00142)33 services
5. Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)28 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 pressure75%
• High cholesterol68%
• Arthritis39%
• Diabetes27%
• Atrial fibrillation24%
• Ischemic heart disease23%

Hospitals where Andrew A. Hollatz works

Medicare's Facility Affiliation Data lists Andrew A. Hollatz 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.

• St Lukes HospitalDuluth, MN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 240047

Practice locations

Addresses where Andrew A. Hollatz is enrolled with Medicare (CMS data updated October 2, 2026).

• 109 N 28th St ESuperior, WI 54880 (715) 395‑3990
• 915 E 1st StDuluth, MN 55805 (218) 249‑5555

Group practices

Medicare enrollment lists Andrew A. Hollatz as a member of this group (CMS data updated October 2, 2026).

• St. Luke's Hospital of Duluth405 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Wisconsin →

Other anesthesiologists in Superior

Clinicians with the same Medicare primary specialty in Superior, WI — not a recommendation.

• Brian Midboe, MD
• Richard H. Cochrane, MD
• Erin M. Maddy, MD
• Kenneth J. Farrell, MD
• Jacob H. Whiting, MD
• Erin H. Grund, MD
• Justin Heser
• Lee D. Stokes, DO

All anesthesiologists in Superior →

Other clinicians in St. Luke's Hospital of Duluth

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

• Theresa C. Starkey, MD
• Joel N. Edwall, MD
• Joseph M. Benert, MD
• Mark W. Erhard, MD
• Sherry Johnson, NP
• Shih-An J. Hsieh, MD

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