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Internal Medicine

Patricia A. Gannon, MD

Works at hospitals in Cleveland, OH · Avon, OH · Medina, OH · Ohio

Summary

Dr. Patricia A. Gannon, MD is an internal medicine doctor at 14601 Detroit Ave, Lakewood, OH 44107. Phone: (216) 444-8950. Accepts Medicare assignment. In 2024, Patricia A. Gannon had 393 Original Medicare patients and 1,699 services. NPI 1639274863. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 14601 Detroit Ave, Lakewood, OH 44107 · Directions (3 more locations)
  • Phone: (216) 444‑8950
  • Medicare: Accepts Medicare assignment
  • Hospitals: Cleveland Clinic, Cleveland Clinic Avon Hospital, Fairview Hospital and 2 more
  • Group practice: Cleveland Clinic
  • Medical school: University Of Toledo College Of Medicine · graduated 1990 (36 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Patricia A. Gannon, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Patricia A. Gannon accept Medicare assignment?
Yes. Medicare's clinician data says Patricia A. Gannon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Patricia A. Gannon see?
In 2024, CMS data shows 393 Original Medicare patients and 1,699 services for Patricia A. Gannon. This counts Original Medicare only and measures volume, not quality.
What is Patricia A. Gannon's NPI number?
1639274863. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Patricia A. Gannon, 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.

Original Medicare patients393
Services billed to Medicare1,699
Different services or procedures27
Participating Medicare providerYes
Average age of these patients76

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)543 services
  2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)281 services
  3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)259 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)256 services
  5. Annual depression screening, 5 to 15 minutes (G0444)153 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 pressure69%
  • High cholesterol62%
  • Arthritis42%
  • Depression24%
  • Chronic kidney disease24%
  • Osteoporosis24%

Hospitals where Patricia A. Gannon works

Medicare's Facility Affiliation Data lists Patricia A. Gannon 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.

  • Cleveland ClinicCleveland, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360180
  • Cleveland Clinic Avon HospitalAvon, OH · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 360364
  • Fairview HospitalCleveland, OH · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 360077
  • Lutheran HospitalCleveland, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360087
  • Medina HospitalMedina, OH · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 360091

Practice locations

Addresses where Patricia A. Gannon is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Cleveland Clinic7,090 clinicians in the group

Specialties

Find other Internal Medicine doctors in Ohio →

Other internal medicine doctors in Lakewood

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

All internal medicine doctors in Lakewood →

Other clinicians in Cleveland Clinic

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

Clinician information

CredentialMD
Medical schoolUniversity Of Toledo College Of Medicine
Graduation year1990 (36 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1639274863
CorrectionsReport an error or suggest an update →

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