Johanna R. Oneill, MD

Medicare activity in 2024

Official CMS public-use data for Johanna R. Oneill, 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. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)33 services
2. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)30 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 cholesterol64%
• High blood pressure57%
• Arthritis46%
• Osteoporosis21%
• Diabetes18%
• Anxiety18%

Hospitals where Johanna R. Oneill works

Medicare's Facility Affiliation Data lists Johanna R. Oneill 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.

• Southwest General Health CenterMiddleburg Heights, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360155

Practice locations

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

• 18181 Pearl RdStrongsville, OH 44136
• 18697 Bagley RdCleveland, OH 44130 (440) 816‑6051
• 18697 Bagley RdMiddlebrg Hts, OH 44130 (440) 816‑8000
• 7255 Old Oak BlvdCleveland, OH 44130

Group practices

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

• Southwest General Medical Group Inc221 clinicians in the group

Specialties

• Obstetrics/Gynecologyprimary

Find other Obstetrics/Gynecology doctors in Ohio →

Other OB-GYNs in Strongsville

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

• Keisha M. Smith, MD
• John A. Alton, MD
• Costas A. Apostolis, MD
• Katherine D. Trunzo, MD
• Laura Rauser, MD
• Natalie A. Bowersox, MD
• Lourdes L. Falconi, MD
• Natalya Dubchuk, MD

All OB-GYNs in Strongsville →

Other clinicians in Southwest General Medical Group Inc

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

• Rammy Korkor, MD
• Grace Song, MD
• Jerold P. Gurley, MD
• Mary Klein, MD
• James R. Holfinger, DPM
• Alicia K. Blacksmith

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