Dr. Katherine M. Massa
- Gender: Female
- Experience: 8 years
- Graduated from: Temple University School Of Medicine
- Graduation year: 2013
- Sole propriator: No
- NPI: 1205272341
Dr. Katherine M. Massa MD
Obstetrician and Gynecologist
She is located at 4901 Forest Park Avenue Div Obgyn Mfm And Us, Ste 710 in Saint Louis, MO 63108. Can help patients with the following: Cervical Intraepithelial Neoplasia (CIN), High Blood Pressure, Hot Flashes, Ovarian Cancer, Trichomoniasis, Vaginal Atrophy and Dryness. Her National Provider Identifier (NPI) number is 1205272341. Appointment can be made via the phone number (314) 454-8181. She is affiliated with 1 practices and 1 hospitals.
Conditions treated
Dr. Katherine Mae Massa, 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. Katherine M. Massa.
- 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. Katherine M. Massa as in-network for the following 2026 plans.
Health plans
Cox HealthPlans
Network data as of Sep 11, 2026, as reported by the insurer.
Show all 7 plans from Cox HealthPlans
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Cox HealthPlans Bronze Expanded Standard | EPO · Expanded Bronze | EPO | Accepting new patients |
| Cox HealthPlans Bronze Preferred | EPO · Bronze | EPO | Accepting new patients |
| Cox HealthPlans Gold Preferred | EPO · Gold | EPO | Accepting new patients |
| Cox HealthPlans Gold Standard | EPO · Gold | EPO | Accepting new patients |
| Cox HealthPlans Silver Connect | EPO · Silver | EPO | Accepting new patients |
| Cox HealthPlans Silver Preferred | EPO · Silver | EPO | Accepting new patients |
| Cox HealthPlans Silver Standard | EPO · Silver | EPO | 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 (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, No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Advantage+ ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | EPO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $8 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 Advantage ($0 Virtual Urgent Care, No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Advantage+ ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | EPO · Silver | 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 Standard (No Referrals) | EPO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Standard+ (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. Katherine M. Massa 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. Katherine M. Massa is enrolled to bill Medicare as a Practitioner - Obstetrics/gynecology .
Bills through: Washington University
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.
Payments received
Drug payment
| Revo Biologics | $26 |
| Ethicon Us | $19 |
Other
| Food and Beverage | $46 |
Studies
TEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated in 2013
Looking for more Obstetrician and Gynecologists?
Out of the 62 obstetrician and gynecologists in this region, here are 10 randomly selected ones for you to explore.
- Gender: Male
- Address: Div Obgyn Mfm And Us, Ste 710 4901 Forest Park Avenue Saint Louis, 63108, MO
- Gender: Male
- Address: Div Obgyn Pelvic Med/Reconstruct Surg, Ste 710 4901 Forest Park Avenue Saint Louis, 63108, MO
- Gender: Female
- Address: Ste 3100 4444 Forest Park Avenue Suite 3100 Saint Louis, 63108, MO
- Gender: Female
- Address: 1414 Cross Street Suite 240 Shiloh, 62269, IL
- Gender: Female
- Address: 1635 Aurora Court Aurora, 80045, CO
- Gender: Female
- Address: 900 North Liberty Street Suite 206 Boise, 83704, ID
- Gender: Female
- Address: Div Obgyn Mfm And Ultrasound 1 Barnes Jewish Hospital Plaza Saint Louis, 63110, MO
- Gender: Female
- Address: Div Ob Reproductive Endocrinology, Ste 3100 4444 Forest Park Avenue Saint Louis, 63108, MO
- Gender: Male
- Address: Ste 710 4901 Forest Park Avenue Suite 710 Saint Louis, 63108, MO
- Gender: Female
- Address: Ste 710 4901 Forest Park Avenue Suite 710 Saint Louis, 63108, MO
Questions & Answers
Does Dr. Katherine Mae Massa have affiliation with practices?
Dr. Katherine Mae Massa is affiliated with SSM Health St. Mary's Hospital of St. Louis.
Does Dr. Katherine Mae Massa accept insurance?
Dr. Katherine Mae Massa is listed in-network for 20 ACA Marketplace (Obamacare/HealthCare.gov) plans from Cox HealthPlans, UnitedHealthcare. See the Marketplace plans section for details.
What conditions does Dr. Katherine Mae Massa treat?
Dr. Katherine Mae Massa provides treatment for Cervical Intraepithelial Neoplasia (CIN), High Blood Pressure, Hot Flashes, Ovarian Cancer, Trichomoniasis, Vaginal Atrophy and Dryness. For the full list see this list.
Has Dr. Katherine Mae Massa affiliation with hospitals?
Dr. Katherine Mae Massa is affiliated with BARNES JEWISH HOSPITAL.
Where can you meet with Dr. Katherine Mae Massa?
Dr. Katherine Mae Massa's office is located at 4901 Forest Park Avenue Div Obgyn Mfm And Us, Ste 710 in Saint Louis, MO 63108.