CHRISTIAN C. SIECK (M.D.) – Family Medicine Physician, NPI 1811989619
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,775 FAMILY PRACTICE in OK
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Provider Addresses for CHRISTIAN C. SIECK (M.D.)
950, North Porter Avenue, Norman, Cleveland County, Oklahoma, 73071, United States
SUITE 300
NORMAN, OK 730716400
Phone: (405) 329-0121
Fax: (405) 292-6099
Mailing address matches the actual address.
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 $54.
Total Amount is formed as General ($54) + Research ($0) + Ownership ($0) = $54.
Last reported payment date: 2024-08-23 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($23).
Total Amount
$54
General + Research + Ownership
Payments
3
Total payment records
General Amount
$54
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GlaxoSmithKline, LLC. | $23 |
| GE HealthCare | $17 |
| PFIZER INC. | $14 |
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: 2010-08-23
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 |
|---|---|---|---|---|
| I20100823000206 | I | Family Practice | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 582 | 479 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 448 | 448 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 215 | 161 | $0 |
| G0008 | Administration of influenza virus vaccine | 94 | 92 | $0 |
| 90662 | Influenza vaccine split virus, preservative free | 86 | 84 | $0 |
Insurance plans in this area (ZIP 73071)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Pediatric Medicine | OK | |
| - | OK | |
| Physician Assistant | OK | |
| - | OK | |
| Internal Medicine | OK | |
| U R O L O G Y | OK | |
| - | OK | |
| U R O L O G Y | OK | |
| - | OK | |
| Family Practice | OK |
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