DR. GREGORY S HARRISON (M.D.) – Neurological Surgery Physician, NPI 1104825892
Neurological Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
41 NEUROSURGERY in ID
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Provider Addresses for DR. GREGORY S HARRISON (M.D.)
Portneuf Medical Center, 777, Hospital Way, Pocatello, Bannock County, Idaho, 83201, United States
SUITE 115
POCATELLO, ID 832015175
Phone: (208) 239-2260
Fax: (208) 239-3767
Type: Location
PO BOX 4168
POCATELLO, ID 832054168
Phone: (208) 239-2055
Fax: (208) 239-3754
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $102.
Total Amount is formed as General ($102) + Research ($0) + Ownership ($0) = $102.
Last reported payment date: 2024-06-06 • Largest payer in this snapshot: Medtronic, Inc. ($84).
Total Amount
$102
General + Research + Ownership
Payments
4
Total payment records
General Amount
$102
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-06
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $84 |
| Ethicon US, LLC | $17 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2011-02-08
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20110208000658 | I | Neurosurgery | ID | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 168 | 128 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 43 | 43 | $0 |
| 22853 | Insertion of cage or mesh device to spine bone and disc space during spine fusion | 39 | 21 | $0 |
| 63048 | Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment | 25 | 12 | $0 |
| 63047 | Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment | 20 | 20 | $0 |
Insurance plans in this area (ZIP 83201)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | ME | |
| Internal Medicine | ID | |
| Family Practice | ID | |
| - | TX | |
| - | OR | |
| Hand Surgery | ID | |
| - | ID | |
| Nurse Practitioner | ID | |
| Physician Assistant | ID | |
| General Surgery | ID |
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