Quick answers
- Which hospitals does John C. Kefer work at?
- Medicare's official clinician data lists John C. Kefer at 5 hospitals: AdventHealth Avista, Boulder Community Health, Centura Health-St Anthony North Health Campus, Good Samaritan Medical Center LLC and Longs Peak Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Kefer see patients?
- Medicare's clinician data lists 4 practice locations, including Lone Tree, CO, Lakewood, CO and Evergreen, CO. Call before your visit to confirm the address.
- What is John C. Kefer's specialty?
- Medicare lists Urology as the primary specialty.
- Does John C. Kefer accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Kefer 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. Kefer offer telehealth?
- Medicare's clinician data says John C. Kefer offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John C. Kefer?
- (303) 695-6106, as listed in official Medicare / NPI Registry data.
- What is John C. Kefer's NPI number?
- 1174799837. 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. Kefer works
Medicare's Facility Affiliation Data lists John C. Kefer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AdventHealth AvistaLouisville, CO · Acute Care Hospital · CCN 060103
- Boulder Community HealthBoulder, CO · Acute Care Hospital · CCN 060027
- Centura Health-St Anthony North Health CampusWestminster, CO · Acute Care Hospital · CCN 060104
- Good Samaritan Medical Center LLCLafayette, CO · Acute Care Hospital · CCN 060116
- Longs Peak HospitalLongmont, CO · Acute Care Hospital · CCN 060128
Practice locations
Addresses where John C. Kefer is enrolled with Medicare (CMS data updated 2026-10-02).
- 10535 Park Meadows Blvd, Suite 102Lone Tree, CO 80124 (303) 695‑6106
- 255 S Routt St, Suite 420Lakewood, CO 80228 (303) 985‑2550
- 32135 Castle Ct, Suite 101Evergreen, CO 80439 (303) 985‑2550
- 500 W 144th Ave, Bldg 2 Suite 220Westminster, CO 80023 (720) 227‑0977
Group practices
Medicare enrollment lists John C. Kefer as a member of this group (CMS data updated 2026-10-02).
- Advanced Urology PLLC59 clinicians in the group
Specialties
- Urologyprimary
Other urologists in Lone Tree
Clinicians with the same Medicare primary specialty in Lone Tree, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1174799837 |
| 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