Dr. Margaret Brennan
Dr. Margaret Brennan
Last updated: Apr 8, 2026

Dr. Margaret Brennan

  • Gender: Female
  • Sole propriator: No
  • NPI: 1164048500

Dr. Margaret Brennan MD

Family Physician

She is located at 9180 West Florissant Avenue in Saint Louis, MO 63136. Can help patients with the following: Autism, Breastfeeding and Lactation, Fever, General Care, Osteoarthritis (OA), Prenatal Care. Her National Provider Identifier (NPI) number is 1164048500. Appointment can be made via the phone number (314) 372-3420.

Conditions treated

Dr. Margaret Brennan, being an family physician, 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. Margaret Brennan.

  • Abdominal Pain
  • Aging In Place
  • Anxiety
  • Arthritis
  • Asthma
  • Autism
  • Birth Control Counseling
  • Breastfeeding and Lactation
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Common Cold
  • Diabetes
  • Fever
  • General Care
  • Headache
  • Heart Disease
  • High Blood Pressure
  • Hyperlipidemia
  • Hypothyroidism
  • Infant Care
  • Influenza
  • Migraine
  • Mold Exposure
  • Nausea and Vomiting
  • Obesity
  • Osteoarthritis (OA)
  • Osteoporosis
  • Pregnancy
  • Prenatal Care
  • Prescription Refill
  • Thyroid Disease
  • Women's Health

Medicare Enrollment

Dr. Margaret Brennan is enrolled to bill Medicare as a Practitioner - Family Practice .

Bills through: Mercy Clinic East Communities

Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.

Looking for more Family Physicians?

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Dr. Lester Earl Krenning
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Dr. Matthew E. Schoenherr
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Dr. Valerie O. Walker
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Dr. Tamer Dabous
  • Gender: Male
  • Address: 11133 Dunn Road Saint Louis, 63136, MO
Dr. Redel Dionisio Iglesias Valera
  • Gender: Male
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Dr. Christopher Michael Perry
  • Gender: Male
  • Address: Ste 102 North 11155 Dunn Road St Louis, 63136, MO
Dr. Gena L. Napier
  • Gender: Female
  • Address: Ste 406 11125 Dunn Road Saint Louis, 63136, MO
Dr. Akinrinola Fatoki
  • Gender: Male
  • Address: Suite 201 11125 Dunn Road Saint Louis, 63136, MO
Dr. Reynal Leon Caldwell
  • Gender: Male
  • Address: Suite 103 2880 Netherton Drive Saint Louis, 63136, MO

Questions & Answers

What conditions does Dr. Margaret Brennan treat?

Dr. Margaret Brennan provides treatment for Autism, Breastfeeding and Lactation, Fever, General Care, Osteoarthritis (OA), Prenatal Care. For the full list see this list.

Where can you meet with Dr. Margaret Brennan?

Dr. Margaret Brennan's office is located at 9180 West Florissant Avenue in Saint Louis, MO 63136.

Does Dr. Margaret Brennan accept insurance?

Unfortunately we don't have any information if Dr. Margaret Brennan accepts insurance.