Kristen C. Rock, MD

Medicare activity in 2024

Official CMS public-use data for Kristen C. Rock, 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. Critical care, first 30-74 minutes (99291)93 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)41 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)30 services
4. Anesthesia for procedure to correct abnormal heart rhythm (00410)15 services
5. Insertion of artery tube for blood sampling or infusion through skin (36620)14 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 cholesterol75%
• Ischemic heart disease53%
• Arthritis48%
• Atrial fibrillation48%
• Chronic kidney disease41%

Hospitals where Kristen C. Rock works

Medicare's Facility Affiliation Data lists Kristen C. Rock 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.

• Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390111
• Penn Presbyterian Medical CenterPhiladelphia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390223

Practice locations

Addresses where Kristen C. Rock is enrolled with Medicare (CMS data updated October 2, 2026).

• 3400 Spruce StPhiladelphia, PA 19104 (215) 349‑8310

Group practices

Medicare enrollment lists Kristen C. Rock as a member of this group (CMS data updated October 2, 2026).

• University of Penn - Medical Group3,505 clinicians in the group

Specialties

• Anesthesiologyprimary
• Critical Care (Intensivists)also

Find other Anesthesiology doctors in Pennsylvania →

Other anesthesiologists in Philadelphia

Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.

• Francis W. Kraemer Iii, MD
• Oluwatoyosi F. Ipaye, MD
• Dimitry Y. Baranov, MD
• Deepti Harshavardhana, MD
• Jessica Berger, MD
• Gaurav Trehan, MD
• Benjamin A. Kohl, MD
• Brian Malone, MD

All anesthesiologists in Philadelphia →

Other clinicians in University of Penn - Medical Group

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

• Shivani U. Thanawala, MD
• Ashwin K. Gupta, PA
• Terry Styles, MD
• Mary A. Decoteau, MD
• Olga Barg, MD
• David J. Aizenberg, 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