MARK O DUNCAN (DO) – Neurological Surgery Physician, NPI 1538155122
Neurological Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
89 NEUROSURGERY in OK
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Provider Addresses for MARK O DUNCAN (DO)
PO BOX 785
LAWTON, OK 73502
Phone: (580) 357-9984
Fax: (580) 357-3277
Type: Mailing
Northwest 31st Street, Lawton, Comanche County, Oklahoma, 73505, United States
LAWTON, OK 735056100
Phone: (580) 248-5255
Fax: (580) 248-2036
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $158.
Total Amount is formed as General ($158) + Research ($0) + Ownership ($0) = $158.
Last reported payment date: 2024-06-05 • Largest payer in this snapshot: Orthofix Medical, Inc. ($121).
Total Amount
$158
General + Research + Ownership
Payments
3
Total payment records
General Amount
$158
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-05
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Orthofix Medical, Inc. | $121 |
| SK Life Science, Inc. | $19 |
| Stryker Corporation | $18 |
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: 2010-02-02
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 |
|---|---|---|---|---|
| I20100202000453 | 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 |
|---|---|---|---|---|
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 64 | 64 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 38 | 37 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 20 | 19 | $0 |
| 64721 | Release and/or relocation of hand nerve | 17 | 14 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 17 | 17 | $0 |
Insurance plans in this area (ZIP 73502)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MN | |
| Nurse Practitioner | OK | |
| Internal Medicine | OK | |
| General Surgery | OK | |
| Physician Assistant | MO | |
| - | TX | |
| Nurse Practitioner | UT | |
| Nurse Practitioner | OK | |
| - | OK | |
| - | OK |
Reviews
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