Quick answers
- Which hospitals does Gregory B. Martin work at?
- Medicare's official clinician data lists Gregory B. Martin at 5 hospitals: AdventHealth Castle Rock, AdventHealth Littleton, AdventHealth Parker, Hca-Healthone dba Swedish Medical Center and Sky Ridge Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory B. Martin see patients?
- Medicare's clinician data lists 15 practice locations, including Englewood, CO, Parker, CO and Denver, CO. Call before your visit to confirm the address.
- What is Gregory B. Martin's specialty?
- Medicare lists Interventional Radiology as the primary specialty, and also Diagnostic Radiology.
- Does Gregory B. Martin accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory B. Martin 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 Gregory B. Martin offer telehealth?
- Medicare's clinician data says Gregory B. Martin offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory B. Martin?
- (303) 761-9190, as listed in official Medicare / NPI Registry data.
- What is Gregory B. Martin's NPI number?
- 1457529927. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory B. Martin works
Medicare's Facility Affiliation Data lists Gregory B. Martin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AdventHealth Castle RockCastle Rock, CO · Acute Care Hospital · CCN 060125
- AdventHealth LittletonLittleton, CO · Acute Care Hospital · CCN 060113
- AdventHealth ParkerParker, CO · Acute Care Hospital · CCN 060114
- Hca-Healthone dba Swedish Medical CenterEnglewood, CO · Acute Care Hospital · CCN 060034
- Sky Ridge Medical CenterLone Tree, CO · Acute Care Hospital · CCN 060112
Practice locations
Addresses where Gregory B. Martin is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 15; the Medicare profile lists all.
- 10700 E Geddes Ave, Suite 200Englewood, CO 80112 (303) 761‑9190
- 10800 E Geddes Ave, Suite 300Englewood, CO 80112 (303) 761‑9190
- 11600 Petina PtParker, CO 80138 (303) 761‑9190
- 1719 E 19th Ave, Presbyterian/st. Lukes Medical CenterDenver, CO 80218 (303) 945‑2960
- 1900 Boise Ave, Suite 110Loveland, CO 80538 (970) 810‑6070
Group practices
Medicare enrollment lists Gregory B. Martin as a member of these groups (CMS data updated 2026-10-02).
- UCHealth Imaging Services LLC258 clinicians in the group
- Radiology Imaging Associates PC149 clinicians in the group
- Medical Imaging of Colorado Radiology Imaging Assc PC Etal PT127 clinicians in the group
- Hawaii Radiologic Associates Ltd89 clinicians in the group
- Banner Imaging Services Colorado LLC86 clinicians in the group
- Ria Endovascular LLC31 clinicians in the group
Specialties
- Interventional Radiologyprimary
- Diagnostic Radiologyalso
Other interventional radiologists in Englewood
Clinicians with the same Medicare primary specialty in Englewood, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1457529927 |
| 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