WELDON JOHN MALLGREN (D.O.) – Psychiatry Physician, NPI 1841384021
Psychiatry Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
363 PSYCHIATRY in OK
Provider Addresses for WELDON JOHN MALLGREN (D.O.)
17599 S HIGHWAY 88
CLAREMORE, OK 740170801
Phone: (918) 342-9530
Fax: (918) 342-9533
Type: Location
114, West Delaware Avenue, Nowata, Nowata County, Oklahoma, 74048, United States
NOWATA, OK 740482601
Phone: (918) 342-9530
Fax: (918) 342-6852
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 10 Open Payments records for all available years, with a total value of $331.
Total Amount is formed as General ($331) + Research ($0) + Ownership ($0) = $331.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: Alkermes, Inc. ($125).
Total Amount
$331
General + Research + Ownership
Payments
10
Total payment records
General Amount
$331
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alkermes, Inc. | $125 |
| Teva Pharmaceuticals USA, Inc. | $57 |
| Supernus Pharmaceuticals, Inc. | $45 |
| ABBVIE INC. | $44 |
| Janssen Pharmaceuticals, Inc | $30 |
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: 2008-09-29
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 |
|---|---|---|---|---|
| I20080929000159 | I | Psychiatry | 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 | 24 | 19 | $0 |
Insurance plans in this area (ZIP 74017)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| P S Y C H I A T R Y | OK | |
| Mental Health Counselor | OK | |
| - | OK | |
| Mental Health Counselor | OK | |
| Mental Health Counselor | OK | |
| Mental Health Counselor | OK | |
| - | OK | |
| Mental Health Counselor | OK | |
| Mental Health Counselor | KS | |
| Marriage And Family Therapist | OK |
Reviews
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