Quick answers
- Which hospitals does Randall Z. Allison work at?
- Medicare's official clinician data lists Randall Z. Allison at 4 hospitals: AdventHealth Littleton, AdventHealth Porter, Centura Health-St Anthony Hospital and Middle Park Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Randall Z. Allison see patients?
- Medicare's clinician data lists 2 practice locations, including Granby, CO and Littleton, CO. Call before your visit to confirm the address.
- What is Randall Z. Allison's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does Randall Z. Allison accept Medicare assignment?
- Yes. Medicare's clinician data says Randall Z. Allison 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 Randall Z. Allison offer telehealth?
- Medicare's clinician data says Randall Z. Allison offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Randall Z. Allison?
- (970) 724-3442, as listed in official Medicare / NPI Registry data.
- What is Randall Z. Allison's NPI number?
- 1245627835. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Randall Z. Allison works
Medicare's Facility Affiliation Data lists Randall Z. Allison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AdventHealth LittletonLittleton, CO · Acute Care Hospital · CCN 060113
- AdventHealth PorterDenver, CO · Acute Care Hospital · CCN 060064
- Centura Health-St Anthony HospitalLakewood, CO · Acute Care Hospital · CCN 060015
- Middle Park Medical CenterKremmling, CO · Critical Access Hospital · CCN 061318
Practice locations
Addresses where Randall Z. Allison is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 Granby Park Dr SGranby, CO 80446 (970) 724‑3442
- 7780 S Broadway, Suite 350Littleton, CO 80122 (303) 730‑4400
Group practices
Medicare enrollment lists Randall Z. Allison as a member of these groups (CMS data updated 2026-10-02).
- Portercare Adventist Health System774 clinicians in the group
- Kremmling Memorial Hospital District38 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Colorado
Clinicians with the same Medicare primary specialty in Colorado — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1245627835 |
| 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