Quick answers
- Which hospitals does John C. Callison Jr. work at?
- Medicare's official clinician data lists John C. Callison Jr. at 2 hospitals: Blount Memorial Hospital and University Health System, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Callison Jr. see patients?
- Medicare's clinician data lists 1 practice location in Knoxville, TN. Call before your visit to confirm the address.
- What is John C. Callison Jr.'s specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Critical Care (Intensivists) and Internal Medicine.
- Does John C. Callison Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Callison Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does John C. Callison Jr. offer telehealth?
- Medicare's clinician data says John C. Callison Jr. offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John C. Callison Jr.?
- (865) 971-3529, as listed in official Medicare / NPI Registry data.
- What is John C. Callison Jr.'s NPI number?
- 1528115334. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John C. Callison Jr. works
Medicare's Facility Affiliation Data lists John C. Callison Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Blount Memorial HospitalMaryville, TN · Acute Care Hospital · CCN 440011
- University Health System, IncKnoxville, TN · Acute Care Hospital · CCN 440015
Practice locations
Addresses where John C. Callison Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 1932 Alcoa Hwy 470Knoxville, TN 37920 (865) 971‑3529
Group practices
Medicare enrollment lists John C. Callison Jr. as a member of this group (CMS data updated 2026-10-02).
- University Health System, Inc.522 clinicians in the group
Specialties
Other pulmonologists in Knoxville
Clinicians with the same Medicare primary specialty in Knoxville, TN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Cincinnati College Of Medicine |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1528115334 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians