RYAN ALEXANDER ZENGOU (M.D.) – Neurological Surgery Physician, NPI 1235395591
Neurological Surgery Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
327 NEUROSURGERY in IL
Provider Addresses for RYAN ALEXANDER ZENGOU (M.D.)
301 N MADISON AVE STE 300
JOLIET, IL 60435
Phone: (815) 725-4367
Type: Mailing
6600 S YALE AVE STE 1400
TULSA, OK 741363331
Phone: (888) 247-0125
Fax: (918) 502-8210
Type: Mailing
6475 S YALE AVE STE 308
TULSA, OK 741367802
Phone: (918) 499-4000
Fax: (918) 499-4001
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 6 Open Payments records for all available years, with a total value of $335.
Total Amount is formed as General ($335) + Research ($0) + Ownership ($0) = $335.
Last reported payment date: 2024-10-10 • Largest payer in this snapshot: Sanara MedTech Inc. ($163).
Total Amount
$335
General + Research + Ownership
Payments
6
Total payment records
General Amount
$335
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Sanara MedTech Inc. | $163 |
| Nico Corporation | $67 |
| Medtronic, Inc. | $46 |
| Cerapedics Inc. | $33 |
| SPR Therapeutics, Inc | $26 |
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: 2024-01-29
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 |
|---|---|---|---|---|
| I20240129002017 | I | Neurosurgery | OK | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 50 | 34 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 24 | 23 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 20 | 16 | $0 |
| 99221 | Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 13 | 13 | $0 |
Insurance plans in this area (ZIP 60435)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | OK | |
| Physician Assistant | OK | |
| Physician Assistant | OK | |
| Nurse Practitioner | OK | |
| - | OK | |
| - | OK | |
| Nurse Practitioner | OK | |
| P O D I A T R Y | OK | |
| Pediatric Medicine | OK | |
| - | OK |
Reviews
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