Doctor profile · Federal record
Dr. Margaretta Mendenhall, M.D.
Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · O Fallon, MO
- NPI 1275730111
- Accepts Medicare
- 19 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
300 Winding Woods Dr, Suite 200
O Fallon, MO 633664771
(636) 240-0130
fax (636) 240-6822 - Mailing address
-
21 Roclare Ln
Saint Louis, MO 631311100
Credentials & registration
- NPI registered
- July 2007 — 19 yrs on file
- Profile last updated
- March 11, 2014
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207V00000X — NUCC code
- State license (1)
- Missouri #2011009917
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1275730111. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
13
Distinct HCPCS
1
Medicare allowed
$505
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0101 |
Cervical or vaginal cancer screening; pelvic and clinical breast examination | 13 | 13 | $39 |
In context: peer comparison
Among 5 peers in O Fallon Obstetrics & Gynecology Physician, average services per provider: 28. This provider delivers 0.5× the peer median.Open Payments
Industry payments received
All-time total
$114
Transactions
6
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Organon LLC | 1 | $24.57 | |
| Astellas Pharma US INC | 1 | $22.20 | |
| Sumitomo Pharma America, INC. | 1 | $20.23 | |
| Evofem Biosciences, INC. | 1 | $17.40 | |
| Bayer Healthcare Pharmaceuticals INC. | 1 | $16.26 | |
| CooperSurgical, INC. | 1 | $13.16 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
43
Patients
0
Total drug cost
$8,676
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Estradiol | Generic | 19 | 0 | $1,506 |
| Medroxyprogesterone Acetate | Generic | 12 | 0 | $401 |
| Premarin (Estrogens, Conjugated) | Brand | 12 | 0 | $6,769 |
Hospital affiliations
Frequently asked questions
What is Dr. Margaretta Mendenhall's medical specialty?
Dr. Margaretta Mendenhall practices Obstetrics & Gynecology Physician in O Fallon, MO.
Where does Dr. Margaretta Mendenhall practice?
Dr. Margaretta Mendenhall practices at 300 Winding Woods Dr, O Fallon, MO 633664771. Office phone: 6362400130.
What is Dr. Margaretta Mendenhall's NPI?
Dr. Margaretta Mendenhall's National Provider Identifier (NPI) is 1275730111, issued by NPPES.
Does Dr. Margaretta Mendenhall accept Medicare assignment?
Yes. Dr. Margaretta Mendenhall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaretta Mendenhall commonly perform?
Top Medicare-reported procedures in 2023: Cervical or vaginal cancer screening; pelvic and clinical breast examination (HCPCS G0101). Source: CMS Medicare Physician & Other Practitioners file.