EFREM MICHAEL COX (MD) – Neurological Surgery Physician, NPI 1841581527
Neurological Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
41 NEUROSURGERY in NV
Provider Addresses for EFREM MICHAEL COX (MD)
861 Coronado Center Dr Ste 200
Henderson, NV 890523992
Phone: (702) 896-0940
Fax: (702) 896-6173
Type: Location
PO BOX 95306
LAS VEGAS, NV 891935306
Phone: (702) 851-0792
Fax: (702) 851-0797
Type: Mailing
8530 W SUNSET RD STE 250
LAS VEGAS, NV 891132245
Phone: (702) 851-0792
Fax: (702) 851-0797
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 125 Open Payments records for all available years, with a total value of $8,106.
Total Amount is formed as General ($8,106) + Research ($0) + Ownership ($0) = $8,106.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: Providence Medical Technology, Inc. ($2,113).
Total Amount
$8,106
General + Research + Ownership
Payments
125
Total payment records
General Amount
$8,106
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Providence Medical Technology, Inc. | $2,113 |
| DePuy Synthes Sales Inc. | $1,799 |
| Medical Device Business Services, Inc. | $1,536 |
| Stryker Corporation | $602 |
| icotec Medical Inc. | $485 |
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: 2020-02-05
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20200124002283 | I | Neurosurgery | NV | TBD |
| I20200205000617 | I | Neurosurgery | AZ | 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 |
|---|---|---|---|---|
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 84 | 84 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 54 | 49 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 45 | 45 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 16 | 13 | $0 |
Insurance plans in this area (ZIP 89052)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | NV | |
| Physician Assistant | NV | |
| N E U R O S U R G E R Y | NV | |
| N E U R O S U R G E R Y | NV | |
| Physician Assistant | NV | |
| N E U R O S U R G E R Y | NV | |
| Physician Assistant | NV | |
| N E U R O S U R G E R Y | NV |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.