DR. THOMAS FREDERIC GANZ (M.D.) – Obstetrics & Gynecology Physician, NPI 1447696802
Obstetrics & Gynecology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
929 OBSTETRICS/GYNECOLOGY in MO
Provider Addresses for DR. THOMAS FREDERIC GANZ (M.D.)
1101 Highway K
O Fallon, MO 633668431
Phone: (636) 379-6363
Fax: (636) 379-1297
Type: Location
301 Caledonia Pkwy Ste 150
O Fallon, MO 633686690
Phone: (636) 202-6802
Type: Location
172 Professional Pkwy
Troy, MO 633792823
Phone: (636) 462-6106
Type: Location
300 Medical Plz Ste 310
Lake St Louis, MO 633671484
Phone: (636) 625-2662
Type: Location
1101 HIGHWAY K
O FALLON, MO 633668431
Phone: (636) 379-6363
Fax: (636) 379-1297
Type: Location
16002 NANTUCKET POINTE CT
GROVER, MO 63040
Phone: (314) 591-1358
Type: Mailing
18800 SCHNUCKS DR STE B
WARRENTON, MO 633831121
Phone: (636) 456-3413
Fax: (636) 379-1297
Type: Location
PO BOX 955534
SAINT LOUIS, MO 631955534
Phone:
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $13,093.
Total Amount is formed as General ($13,093) + Research ($0) + Ownership ($0) = $13,093.
Last reported payment date: 2024-10-31 • Largest payer in this snapshot: Pharmacosmos Therapeutics Inc. ($13,093).
Total Amount
$13,093
General + Research + Ownership
Payments
2
Total payment records
General Amount
$13,093
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-31
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Pharmacosmos Therapeutics Inc. | $13,093 |
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: 2017-08-09
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 |
|---|---|---|---|---|
| I20170809003301 | I | Obstetrics/Gynecology | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 12 | 12 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 63366)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | MO | |
| - | MO | |
| Nurse Practitioner | MO | |
| Physician Assistant | MO | |
| - | MO | |
| Nurse Practitioner | MO | |
| - | MO | |
| - | MO | |
| - | MO | |
| Interventional Pain Management, Anesthesiology | MO |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.