Edwin W. Gannon Iii, MD

Medicare activity in 2024

Official CMS public-use data for Edwin W. Gannon Iii, 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. Imaging of retina (92134)292 services
2. Established patient complete exam of visual system (92014)289 services
3. Established patient problem focused exam of visual system (92012)273 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)241 services
5. Ultrasound scan to determine eye length and lens power (76519)132 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%
• Arthritis55%
• Diabetes30%
• Ischemic heart disease27%
• Anxiety22%

Hospitals where Edwin W. Gannon Iii works

Medicare's Facility Affiliation Data lists Edwin W. Gannon Iii 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.

• Erlanger Medical CenterChattanooga, TN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 440104
• Memorial Healthcare System, IncChattanooga, TN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 440091

Practice locations

Addresses where Edwin W. Gannon Iii is enrolled with Medicare (CMS data updated October 2, 2026).

• 1801 Gunbarrel RdChattanooga, TN 37421 (423) 855‑6800

Group practices

Medicare enrollment lists Edwin W. Gannon Iii as a member of this group (CMS data updated October 2, 2026).

• Pomerance Eye Center, PC3 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in Tennessee →

Other ophthalmologists in Chattanooga

Clinicians with the same Medicare primary specialty in Chattanooga, TN — not a recommendation.

• Dennis C. Matzkin, MD
• John L. Stone, MD
• Gene K. Lee, MD
• Patrick J. Bowers Jr., MD
• James P. Richmond Jr., MD
• William C. Whitmire, MD
• David Friedrich, MD
• John Prenshaw, MD

All ophthalmologists in Chattanooga →

Other clinicians in Pomerance Eye Center, PC

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

• Gene K. Lee, MD
• Michelle L. Robison, 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