Charles M. Callahan, MD

Medicare activity in 2024

Official CMS public-use data for Charles M. Callahan, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)1,093 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)232 services
3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)185 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)137 services
5. Critical care, first 30-74 minutes (99291)87 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%
• Arthritis63%
• Ischemic heart disease60%
• Chronic kidney disease54%
• Heart failure54%

Hospitals where Charles M. Callahan works

Medicare's Facility Affiliation Data lists Charles M. Callahan 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.

• Cape Coral HospitalCape Coral, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100244
• Gulf Coast Medical Center Lee HealthFort Myers, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100220
• Lee Memorial HospitalFort Myers, FL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 100012

Practice locations

Addresses where Charles M. Callahan is enrolled with Medicare (CMS data updated October 2, 2026).

• 1138 Country Club BlvdCape Coral, FL 33990 (239) 424‑1900
• 1435 SE 8th TerCape Coral, FL 33990
• 414 Cape Coral Pkwy ECape Coral, FL 33904

Group practices

Medicare enrollment lists Charles M. Callahan as a member of this group (CMS data updated October 2, 2026).

• Lee Health System Inc1,428 clinicians in the group

Specialties

• Infectious Diseaseprimary

Find other Infectious Disease doctors in Florida →

Other infectious disease doctors in Cape Coral

Clinicians with the same Medicare primary specialty in Cape Coral, FL — not a recommendation.

• Elena Gatskevich, MD
• Mary B. Saunders, DO
• Rajendra S. Sharma, MD
• Kateryna Lewis, MD
• Jean E. Hage, MD
• Robert Castro, MD
• Myint M. Noe, MD
• Rameez H. Phulpoto, MD

All infectious disease doctors in Cape Coral →

Other clinicians in Lee Health System Inc

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

• Brian Medlin, DO
• Alexandra Walters, DO
• Amanda G. Smith, NP
• Jessica M. Castillo, MD
• Joseph J. Guernsey, MD
• Jerry Sojan, 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