Dr. Marshall S. St. Amant
- Gender: Male
- Experience: 37 years
- Graduated from: Louisiana State University School Of Medicine In New Orleans
- Graduation year: 1984
- Sole propriator: No
- NPI: 1649279969
Dr. Marshall S. St. Amant M.D.
Obstetrician and Gynecologist
He is located at 100 Womans Way in Baton Rouge, LA 70817. Can help patients with the following: Amenorrhea, Hot Flashes, Menopause, Trichomoniasis, Urinary Tract Infection (UTI), Uterine Cancer. His National Provider Identifier (NPI) number is 1649279969. Appointment can be made via the phone number (225) 924-8338. He is affiliated with 3 practices and 1 hospitals.
Conditions treated
Dr. Marshall S. St. Amant, being an obstetrician and gynecologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Marshall S. St. Amant.
- Amenorrhea
- Bacterial Vaginosis
- Birth Control Counseling
- Blood in Urine
- Braxton Hicks Contractions
- Breast Cancer
- Breastfeeding
- Breastfeeding and Lactation
- Cancer
- Cervical Cancer
- Cervical Intraepithelial Neoplasia (CIN)
- Chlamydia
- Ectopic Pregnancy
- Endometriosis
- Fibrocystic Breast Disease
- Gestational Diabetes
- Group B Streptococcal Infection (GBS)
- Gynecological Exam
- High Blood Pressure
- Hot Flashes
- Human Papillomavirus (HPV)
- Infertility
- Labor and Birth
- Menopause
- Menstrual Cramps
- Miscarriage
- Morning Sickness
- Osteoporosis
- Ovarian Cancer
- Ovarian Cysts
- Overactive Bladder (OAB)
- Pelvic Inflammatory Disease (PID)
- Pelvic Pain
- Perimenopause
- Placenta Previa
- Polycystic Ovary Syndrome (PCOS)
- Preeclampsia and Eclampsia
- Pregnancy
- Premature Ovarian Failure (POF)
- Premenstrual Dysphoric Disorder (PMDD)
- Premenstrual Syndrome (PMS)
- Prenatal Care
- Sexually Transmitted Diseases (STDs)
- Trichomoniasis
- Urinary Incontinence (UI)
- Urinary Retention
- Urinary Tract Infection (UTI)
- Uterine Cancer
- Uterine Fibroids
- Uterine Growths
- VBAC
- Vaginal Atrophy and Dryness
- Vaginal Bleeding
- Vaginal Cancer
- Vaginal Pain
- Vaginitis
- Women's Health
- Yeast Infection
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Marshall S. St. Amant as in-network for the following 2026 plans.
Health plans
AmeriHealth Caritas Next
Network data as of Sep 11, 2026, as reported by the insurer.
Show all 8 plans from AmeriHealth Caritas Next
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| AmeriHealth Caritas Next Bronze Essential + No Referrals | HMO · Bronze | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Bronze Premier + No Referrals | HMO · Expanded Bronze | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Bronze Signature + No Referrals | HMO · Expanded Bronze | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Gold Premier + No Referrals | HMO · Gold | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Gold Signature + No Referrals | HMO · Gold | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Silver Essential + No Referrals | HMO · Silver | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Silver Premier + No Referrals | HMO · Silver | Preferred | Accepting new patients |
| AmeriHealth Caritas Next Silver Signature + No Referrals | HMO · Silver | Preferred | Accepting new patients |
Blue Cross and Blue Shield of Louisiana
Network data as of Sep 8, 2026, as reported by the insurer.
Show all 8 plans from Blue Cross and Blue Shield of Louisiana
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Max 70/50 $6700 with 2 $0 PCP Virtual Visits HSA Eligible | PPO · Bronze | Not Applicable | Accepting new patients |
| Blue Max 80/60 $1500 with 2 $0 PCP Virtual Visits | PPO · Gold | Not Applicable | Accepting new patients |
| Blue Max Copay (PCP) 50/50 $3300 with 2 $0 PCP Virtual Visits | PPO · Silver | Not Applicable | Accepting new patients |
| Blue Max Copay (PCP) 50/50 $7500 Standardized HSA Eligible | PPO · Expanded Bronze | Not Applicable | Accepting new patients |
| Blue Max Copay (PCP) 60/40 $6000 Standardized | PPO · Silver | Not Applicable | Accepting new patients |
| Blue Max Copay (PCP) 75/55 $2000 Standardized | PPO · Gold | Not Applicable | Accepting new patients |
| Blue Saver 60/40 $6100 | PPO · Expanded Bronze | Not Applicable | Accepting new patients |
| Blue Saver 90/70 $3400 | PPO · Silver | Not Applicable | Accepting new patients |
CHRISTUS Health Plan
Network data as of Jan 1, 1900, as reported by the insurer.
Show all 15 plans from CHRISTUS Health Plan
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| CHRISTUS Bronze Essential | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Bronze Essential Plus | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Gold | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold Essential | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold Essential Plus | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold Plus | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Silver Essential | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Silver Essential Plus | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Standard Expanded Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Standard Gold | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Standard Silver | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Value Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Value Bronze Plus | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Value Silver | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Value Silver Plus | HMO · Silver | Preferred | Accepting new patients |
HMO Louisiana
Network data as of Sep 8, 2026, as reported by the insurer.
Show all 40 plans from HMO Louisiana
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Connect 80/60 $3200 with 2 $0 PCP Virtual Visits (L) | POS · Silver | Not Applicable | Accepting new patients |
| Blue Connect 80/60 $3200 with 2 $0 PCP Virtual Visits (N) | POS · Silver | Not Applicable | Accepting new patients |
| Blue Connect 80/60 $3200 with 2 $0 PCP Virtual Visits (S) | POS · Silver | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 50/50 $7500 Standardized (H) HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 50/50 $7500 Standardized (L) HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 50/50 $7500 Standardized (N) HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 50/50 $7500 Standardized (S) HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 60/40 $6000 Standardized (L) | POS · Silver | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 60/40 $6000 Standardized (N) | POS · Silver | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 60/40 $6000 Standardized (S) | POS · Silver | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 75/55 $2000 Standardized (H) | POS · Gold | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 75/55 $2000 Standardized (L) | POS · Gold | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 75/55 $2000 Standardized (N) | POS · Gold | Not Applicable | Accepting new patients |
| Blue Connect Copay (PCP) 75/55 $2000 Standardized (S) | POS · Gold | Not Applicable | Accepting new patients |
| Blue POS 60/40 $6500 with 2 $0 PCP Virtual Visits HSA Eligible | POS · Bronze | Not Applicable | Accepting new patients |
| Blue POS 80/60 $3200 with 2 $0 PCP Virtual Visits | POS · Silver | Not Applicable | Accepting new patients |
| Blue POS 90/70 $9900 with 2 $0 PCP Virtual Visits HSA Eligible | POS · Bronze | Not Applicable | Accepting new patients |
| Blue POS Copay (PCP) 50/50 $7500 Standardized HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Blue POS Copay (PCP) 60/40 $6000 Standardized | POS · Silver | Not Applicable | Accepting new patients |
| Blue POS Copay (PCP) 75/55 $2000 Standardized | POS · Gold | Not Applicable | Accepting new patients |
| Blue POS Copay (PCP) 80/60 $1000 with 2 $0 PCP Virtual Visits | POS · Gold | Not Applicable | Accepting new patients |
| Community Blue 80/60 $3200 with 2 $0 PCP Virtual Visits | POS · Silver | Not Applicable | Accepting new patients |
| Community Blue 90/70 $9900 with 2 $0 PCP Virtual Visits HSA Eligible | POS · Bronze | Not Applicable | Accepting new patients |
| Community Blue Copay (PCP) 50/50 $7500 Standardized HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Community Blue Copay (PCP) 60/40 $6000 Standardized | POS · Silver | Not Applicable | Accepting new patients |
| Community Blue Copay (PCP) 75/55 $2000 Standardized | POS · Gold | Not Applicable | Accepting new patients |
| Precision Blue 80/60 $3200 with 2 $0 PCP Virtual Visits (BR) | POS · Silver | Not Applicable | Accepting new patients |
| Precision Blue 80/60 $3200 with 2 $0 PCP Virtual Visits (M) | POS · Silver | Not Applicable | Accepting new patients |
| Precision Blue 90/70 $9900 with 2 $0 PCP Virtual Visits (M) HSA Eligible | POS · Bronze | Not Applicable | Accepting new patients |
| Precision Blue Copay (PCP) 50/50 $7500 Standardized (BR) HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Precision Blue Copay (PCP) 50/50 $7500 Standardized (M) HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Precision Blue Copay (PCP) 60/40 $6000 Standardized (BR) | POS · Silver | Not Applicable | Accepting new patients |
| Precision Blue Copay (PCP) 60/40 $6000 Standardized (M) | POS · Silver | Not Applicable | Accepting new patients |
| Precision Blue Copay (PCP) 75/55 $2000 Standardized (BR) | POS · Gold | Not Applicable | Accepting new patients |
| Precision Blue Copay (PCP) 75/55 $2000 Standardized (M) | POS · Gold | Not Applicable | Accepting new patients |
| Signature Blue 80/60 $3200 with 2 $0 PCP Virtual Visits | POS · Silver | Not Applicable | Accepting new patients |
| Signature Blue 90/70 $9900 with 2 $0 PCP Virtual Visits HSA Eligible | POS · Bronze | Not Applicable | Accepting new patients |
| Signature Blue Copay (PCP) 50/50 $7500 Standardized HSA Eligible | POS · Expanded Bronze | Not Applicable | Accepting new patients |
| Signature Blue Copay (PCP) 60/40 $6000 Standardized | POS · Silver | Not Applicable | Accepting new patients |
| Signature Blue Copay (PCP) 75/55 $2000 Standardized | POS · Gold | Not Applicable | Accepting new patients |
UnitedHealthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 13 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) | EPO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Essential ($0 Virtual Urgent Care, No Referrals) | EPO · Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard (No Referrals) | EPO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard+ (Dental + Vision, No Referrals) | EPO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Gold Advantage ($0 Virtual Urgent Care, $3 Tier 2 Rx, No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Advantage+ ($0 Virtual Urgent Care, $3 Tier 2 Rx, Dental + Vision, No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $3 Tier 2 Rx, No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Standard (No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Silver Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Copay Focus + $0 Indiv Med Ded ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Standard (No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value ($0 Virtual Urgent Care, No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value + ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Marshall S. St. Amant is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Marshall S. St. Amant is enrolled to bill Medicare as a Practitioner - Obstetrics/gynecology .
Bills through: Ochsner Clinic Llc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Studies
LOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN NEW ORLEANS
Graduated in 1984Affiliated practices
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Questions & Answers
What conditions does Dr. Marshall S. St. Amant treat?
Dr. Marshall S. St. Amant provides treatment for Amenorrhea, Hot Flashes, Menopause, Trichomoniasis, Urinary Tract Infection (UTI), Uterine Cancer. For the full list see this list.
Does Dr. Marshall S. St. Amant accept patients with Blue Cross and Blue Shield of Louisiana?
Yes, Dr. Marshall S. St. Amant is listed in-network for Blue Cross and Blue Shield of Louisiana through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Where can you meet with Dr. Marshall S. St. Amant?
Dr. Marshall S. St. Amant's office is located at 100 Womans Way in Baton Rouge, LA 70817.
Has Dr. Marshall S. St. Amant affiliation with hospitals?
Dr. Marshall S. St. Amant is affiliated with WOMAN'S HOSPITAL.
Does Dr. Marshall S. St. Amant have affiliation with practices?
Dr. Marshall S. St. Amant is affiliated with Northshore ENT Clinic. For the full list of practices see this list.