Abbey R. Johnston, MD

Medicare activity in 2024

Official CMS public-use data for Abbey R. Johnston, 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. Pathology examination of tissue using a microscope, intermediate complexity (88305)311 services
2. Special stained specimen slides to examine tissue, each additional procedure (88341)208 services
3. Special stained specimen slides to examine tissue, initial procedure (88342)72 services
4. Cell examination of specimen, selective cellular enhancement technique (88112)63 services
5. Pathology examination of tissue using a microscope, moderately high complexity (88307)58 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%
• Arthritis52%
• Ischemic heart disease41%
• Diabetes37%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)33%

Hospitals where Abbey R. Johnston works

Medicare's Facility Affiliation Data lists Abbey R. Johnston 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.

• Grant Medical CenterColumbus, OH · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 360017
• Marion General HospitalMarion, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360011
• Riverside Methodist HospitalColumbus, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360006

Practice locations

Addresses where Abbey R. Johnston is enrolled with Medicare (CMS data updated October 2, 2026).

• 3535 Olentangy River RdColumbus, OH 43214 (614) 566‑4945
• 7500 Hospital DrDublin, OH 43016 (614) 544‑8356

Group practices

Medicare enrollment lists Abbey R. Johnston as a member of this group (CMS data updated October 2, 2026).

• Corpath Ltd26 clinicians in the group

Specialties

• Pathologyprimary

Find other Pathology doctors in Ohio →

Other pathologists in Columbus

Clinicians with the same Medicare primary specialty in Columbus, OH — not a recommendation.

• Kaila Buckley, MD
• Tiffany L. Alley, DO
• Nicoleta Arva, MD
• Anil V. Parwani, MD
• Maryam Tahir, MD
• Gary H. Tozbikian, MD
• Ashlie E. Rubrecht, MD
• Ashwini K. Esnakula, MD

All pathologists in Columbus →

Other clinicians in Corpath Ltd

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

• Kaila Buckley, MD
• Eric W. Willis, MD
• Neil Alouch, MD
• Ling Guo, MD
• Kelly Hanley, DO
• Frido K. Bruehl, 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