Andrea C. Ridgeway, DO

Medicare activity in 2024

Official CMS public-use data for Andrea C. Ridgeway, 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. Emergency department visit with high level of medical decision making (99285)224 services
2. Emergency department visit with moderate level of medical decision making (99284)206 services
3. Critical care, first 30-74 minutes (99291)91 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)13 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%
• Arthritis54%
• Depression45%
• Chronic kidney disease43%
• Diabetes42%

Hospitals where Andrea C. Ridgeway works

Medicare's Facility Affiliation Data lists Andrea C. Ridgeway 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.

• Frederick Health HospitalFrederick, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210005
• Johns Hopkins Howard County Medical CenterColumbia, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210048

Practice locations

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

• 400 W 7th St, Frederick Health HospitalFrederick, MD 21701 (840) 566‑3300

Group practices

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

• Hospitalist Medicine Physicians of Maryland-Frederick PC12 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Maryland →

Other emergency medicine doctors in Frederick

Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.

• Gregory Mathelier, MD
• Min Seok Chae, MD
• Leonard A. Kazanov, MD
• Brett A. Walters, MD
• Bryan S. Feldman, MD
• Michael Urdang, MD
• Joseph Schmitz, MD
• Trumer J. Wagner Jr., MD

All emergency medicine doctors in Frederick →

Other clinicians in Hospitalist Medicine Physicians of Maryland-Frederick PC

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

• Gregory Mathelier, MD
• Min Seok Chae, MD
• Crystal A. Gempko, PA
• Bryan S. Feldman, MD
• Vijay Kannan, MD
• Michael Urdang, 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