Physician Profile
Margaretta L. Mendenhall, M.D.
Unclaimed ProfileAbout Dr. Mendenhall
Margaretta L. Mendenhall, M.D. is a healthcare provider in O Fallon, MO specializing in obstetrics/gynecology. Margaretta trained at Saint Louis University School of Medicine, graduating in 2007. Margaretta is also listed as specializing in obstetrics & gynecology. Medicare claims data shows Margaretta provided 35 services to 35 patients. The services billed most often include cervical or vaginal cancer screening; pelvic and clinical breast examination and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. This provider record is associated with NPI 1275730111.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (636) 240-0130
- Email not available
Practice Locations
300 WINDING WOODS DR SUITE 200
O Fallon, MO 63366
Conditions Commonly Evaluated or Treated
Within Obstetrics and Gynecology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Pelvic pain and benign gynecology
- Uterine fibroids
- Chronic pelvic pain
- Ovarian cysts
- Painful intercourse
- Pelvic organ prolapse
- Urinary incontinence in women
Most searched conditions
Infections and vulvovaginal conditions
Menstrual and hormonal
- Absent periods
- Genitourinary syndrome of menopause
- Painful periods
- Perimenopause
- Premenstrual syndrome
Pregnancy
- Ectopic pregnancy
- Gestational diabetes
- Hyperemesis gravidarum
- Miscarriage
- Placenta previa
- Postpartum depression
- Preeclampsia
- Preterm labor
Cancer and precancer
- Abnormal cervical cells and cervical dysplasia
- Cervical cancer
- Endometrial cancer
- Endometrial hyperplasia
- Ovarian cancer
Contraception
Fertility
Infections
Pregnancy Complications
Vaginal & Vulvar Health
Procedures & services
Most searched procedures
Contraception and office treatment
Pregnancy and delivery
Preventive and diagnostic
Birth Control
Contraception
Diagnostic Procedures
Fertility
Hormone & Menopause
Laparoscopic and adnexal surgery
Pelvic floor
Postpartum Care
Pregnancy & Prenatal
Preventive Care
Preventive Screening
Routine Exams
Surgeries
Uterine and cervical procedures
Procedures Most Often Billed to Medicare
35 services · 35 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Cervical or vaginal cancer screening; pelvic and clinical breast examination | Billing code | G0101 |
21 | As often as other peers in Obstetrics/Gynecology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
14 | Less often than most peers in Obstetrics/Gynecology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other obstetrics/gynecology specialists at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other obstetrics/gynecology specialists in O Fallon 6
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Saint Louis University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2007 at Saint Louis University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Margaretta L. Mendenhall specialize in?
Margaretta L. Mendenhall is an obstetrics/gynecology in O Fallon, MO. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Margaretta L. Mendenhall located?
Margaretta L. Mendenhall is listed at 300 Winding Woods Dr Suite 200, O Fallon, MO 63366. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Margaretta L. Mendenhall's phone number?
The number on file is (636) 240-0130. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Margaretta L. Mendenhall?
Margaretta L. Mendenhall's National Provider Identifier is 1275730111. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Margaretta L. Mendenhall train?
Margaretta L. Mendenhall attended Saint Louis University School of Medicine, graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Margaretta L. Mendenhall have?
Margaretta L. Mendenhall has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What does Margaretta L. Mendenhall do most often?
According to Medicare billing data, Margaretta L. Mendenhall the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Margaretta L. Mendenhall's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Margaretta L. Mendenhall. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.