Margaret Kreher, MD

Medicare activity in 2024

Official CMS public-use data for Margaret Kreher, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)187 services
2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)81 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)66 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)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%
• Arthritis65%
• Ischemic heart disease58%
• Heart failure53%
• Chronic kidney disease49%

Hospitals where Margaret Kreher works

Medicare's Facility Affiliation Data lists Margaret Kreher 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.

• Thomas Jefferson University HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390174

Practice locations

Addresses where Margaret Kreher is enrolled with Medicare (CMS data updated October 2, 2026).

• 925 Chestnut St, Suite 420aPhiladelphia, PA 19107 (215) 955‑8516

Group practices

Medicare enrollment lists Margaret Kreher as a member of this group (CMS data updated October 2, 2026).

• Jefferson University Physicians1,531 clinicians in the group

Specialties

• Internal Medicineprimary
• Hospice/Palliative Carealso

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Philadelphia

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

• Sergei V. Chekov, MD
• Ellen J. Mangin, DO
• Matthew J. Klebanoff, MD
• Nicole J. Winchell, MD
• Syed M. Zaidi, MD
• Mary Ann Kuzma, MD
• Ankita Chatterjee, MD
• Julia Palecki, MD

All internal medicine doctors in Philadelphia →

Other clinicians in Jefferson University Physicians

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

• Steven N. Schwartz, MD
• Marinos C. Dalakas, MD
• Kristin M. Gordon, NP
• Donnamarie Giuffrida, NP
• Srinivas Prasad, MD
• Bridget A. Dunn, 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