GREGORY WARREN MATTINGLY (M.D.) – Psychiatry Physician, NPI 1215933379
Psychiatry Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
819 PSYCHIATRY in MO
Provider Addresses for GREGORY WARREN MATTINGLY (M.D.)
4801, Weldon Spring Parkway, Weldon Spring, Saint Charles County, Missouri, 63304, United States
STE 300
WELDON SPRING, MO 633049101
Phone: (636) 949-5760
Fax: (636) 949-0729
Type: Mailing
330 1ST CAPITOL DR
STE 390
SAINT CHARLES, MO 633012852
Phone: (636) 949-5760
Fax: (636) 949-0729
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1,588 Open Payments records for all available years, with a total value of $1,675,418.
Total Amount is formed as General ($1,675,418) + Research ($0) + Ownership ($0) = $1,675,418.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: Axsome Therapeutics, Inc. ($335,793).
Total Amount
$1,675,418
General + Research + Ownership
Payments
1,588
Total payment records
General Amount
$1,675,418
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 |
|---|---|
| Axsome Therapeutics, Inc. | $335,793 |
| ABBVIE INC. | $273,434 |
| Otsuka America Pharmaceutical, Inc. | $208,786 |
| H. Lundbeck A S | $83,023 |
| Neurocrine BioSciences Inc. | $77,511 |
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: 2012-04-10
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 |
|---|---|---|---|---|
| I20120410000409 | I | Psychiatry | MO | 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 |
|---|---|---|---|---|
| 90833 | Psychotherapy with evaluation and management visit, 30 minutes | 163 | 92 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 140 | 84 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 34 | 28 | $0 |
| 90785 | Psychiatric services complicated by communication factor | 32 | 21 | $0 |
| 90792 | Psychiatric diagnostic evaluation with medical services | 11 | 11 | $0 |
Insurance plans in this area (ZIP 63304)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PSYCHIATRY | MO | 90792 | Psychiatric diagnostic evaluation with medical services | 22 | 22 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MO | |
| Nurse Practitioner | MO | |
| Nurse Practitioner | MO | |
| Nurse Practitioner | MO | |
| P S Y C H I A T R Y | MO | |
| Nurse Practitioner | MO |
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