John A. Damergis Jr., MD

Medicare activity in 2024

Official CMS public-use data for John A. Damergis Jr., 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. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)194 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)143 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)36 services
4. Sleep study including heart rate, breathing, airflow, and effort (95806)35 services
5. Sleep study in sleep lab (6 years or older) (95810)35 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 cholesterol62%
• High blood pressure59%
• Arthritis55%
• Anxiety41%
• Depression38%
• Diabetes24%

Hospitals where John A. Damergis Jr. works

Medicare's Facility Affiliation Data lists John A. Damergis Jr. 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.

• Abbott Northwestern HospitalMinneapolis, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240057
• Regions HospitalSaint Paul, MN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 240106

Practice locations

Addresses where John A. Damergis Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 2828 Chicago Ave, Suite 200Minneapolis, MN 55407 (612) 879‑1000

Group practices

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

• Noran Neurological Clinic, P.A.54 clinicians in the group

Specialties

• Sleep Medicineprimary
• Neurologyalso

Find other Sleep Medicine doctors in Minnesota →

Other sleep medicine doctors in Minnesota

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

• Erin C. Golden, MD
• Rakesh John
• Akinbolaji Akingbola
• Haesung Lee, DO
• Amina U. Hamza, DO
• Yumna Saeed, MD
• Peter K. Franklin, MD
• Meghna P. Mansukhani

All sleep medicine doctors in Minnesota →

Other clinicians in Noran Neurological Clinic, P.A.

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

• Ann M. Rechtzigel
• Steven T. Janousek, MD
• Maida J. Gunther, CP
• Yumna Saeed, MD
• Katherine L. Ferguson, MD
• Ashfaq A. Sharif, 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