Randall Zain Allison, M.D.
NPI 1245627835ActiveIndividual· Neurological Surgery· Lakewood, CO
Neurological Surgery (M.D.) with Portercare Adventist Health System and 1 other group, practicing in Lakewood, Colorado. Mostly services rather than prescriptions: Medicare paid $129,560 for 115 patients in 2024, with only 32 Part D claims. Spineart USA Inc was the largest of 10 companies reporting payments in 2025, $7,017 in all, mostly travel and lodging. Lists Adventhealth Littleton and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1245627835 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 21, 2015 |
| Last updated in NPPES | Jan 29, 2024 |
| Certified by provider | Jan 29, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | DR.0068107 | CO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurosurgery (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 115 |
|---|---|
| Services billed | 323 across 77 procedure codes |
| Paid by Medicare | $129,560 |
Part D prescriptions in 2024
| Prescriptions (claims) | 32 · 42 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $1,366 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical groups
- Portercare Adventist Health SystemDenver, CO · 774 clinicians
- Kremmling Memorial Hospital DistrictGranby, CO · 38 clinicians
Hospital affiliations
- Adventhealth LittletonLittleton, CO
- Adventhealth PorterDenver, CO
- Centura Health-St Anthony HospitalLakewood, CO
- Middle Park Medical CenterKremmling, CO
Industry payments (Open Payments)
- 2025$7,017 · 24 payments from 10 companies
- 2024$1,271 · 14 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Spineart USA Inc | $5,830 | 5 |
| Boston Scientific Corporation | $478.12 | 10 |
| Medtronic, Inc. | $160.65 | 2 |
| Orthofix Medical, Inc. | $153.59 | 1 |
| Stryker Corporation | $138.83 | 1 |
What the 2025 payments were for
- Travel and Lodging$5,830 · 5 payments
- Food and Beverage$1,048 · 18 payments
- Education$138.83 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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