Mary G. Petrick, MD

Medicare activity in 2024

Official CMS public-use data for Mary G. Petrick, 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. Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)271 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)220 services
3. Pathology examination of specimen during surgery, first tissue block (88331)177 services
4. Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)162 services
5. Biopsy of related skin growth, first growth (11102)147 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%
• Arthritis41%
• Chronic kidney disease34%
• Diabetes30%
• Ischemic heart disease25%

Hospitals where Mary G. Petrick works

Medicare's Facility Affiliation Data lists Mary G. Petrick 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.

• Geisinger Medical CenterDanville, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390006

Practice locations

Addresses where Mary G. Petrick is enrolled with Medicare (CMS data updated October 2, 2026).

• 100 N Academy AveDanville, PA 17822
• 200 Scenery DrState College, PA 16801 (814) 231‑4560

Group practices

Medicare enrollment lists Mary G. Petrick as a member of this group (CMS data updated October 2, 2026).

• Geisinger Clinic3,467 clinicians in the group

Specialties

• Dermatologyprimary

Find other Dermatology doctors in Pennsylvania →

Other dermatologists in Danville

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

• Megan O Donnell Cappelli, MD
• Jennifer L. Brooks, MD
• Christen M. Mowad, MD
• Christine A. Wolcott, MD
• Tammie C. Ferringer, MD
• Tara Avery, MD
• Amrit Greene, MD
• Matthew L. Palmer, MD

All dermatologists in Danville →

Other clinicians in Geisinger Clinic

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

• James W. Joseph, MD
• Katherine J. Moeller, DO
• Teresa Mott, CNA
• Terra R. Fasold, PA
• John Ditchkus Jr., CNA
• Jose Deschamps, 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