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Profile last updated: March 2026How we source this data
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Provider Profile

Heather Williamson, DO

Family Medicine Physician

NPI: 1700880358

4.8

30 reviews

20

Years Exp.

O Fallon

MO

Family Medicine

Specialty

About

Dr. Heather Williamson, DO, is a dedicated Family Medicine Physician based in O'Fallon, MO. She specializes in comprehensive healthcare for individuals and families, integrating biological, clinical, and behavioral sciences to provide holistic care. Dr. Williamson is known for her excellent bedside manner and her ability to attentively listen to patients, ensuring thorough explanations of medical conditions and treatments.

With a patient rating of 4.8 out of 5 based on 30 reviews, Dr. Williamson has built a reputation for being approachable and taking the time to address concerns, contributing to a comfortable healthcare experience. Patients have consistently praised her for her commitment to their health and well-being.

Dr. Williamson has been practicing Family Medicine for several years, offering services with an estimated visit cost starting at $671. Her focus on the total health care of the individual and the family makes her a trusted provider in the O'Fallon community.

Practicing Since

Jun 2005

Gender

Female

Experience

20 years

MO Medical License

#2001026591

Practice Type

Group Practice

NPI Number

1700880358
Avg. Self-Pay Rate

Self-pay rates shown are averages across all procedures on file for this provider, sourced from Transparency in Coverage Act data. These are cash-pay prices — what you'd typically pay without using insurance. Actual rates may vary by procedure, location, and date of service.

INITIAL PED CRITICAL CARE 29 DAYS THRU 24 MONTHS

CPT: 99471professional

$1,044

1ST INPATIENT CRITICAL CARE PR DAY AGE 28 DAYS/<

CPT: 99468professional

$1,019

INITIAL PED CRITICAL CARE 2 THRU 5 YEARS

CPT: 99475professional

$735

Cost data sourced from insurer Transparency in Coverage Act filings. Costs shown are negotiated rates and may not reflect your actual out-of-pocket cost. Learn about our data

Local Market

Missouri Low

$67

Missouri Typical

$125

Missouri High

$148

Across Missouri, a family medicine physician visit ranges from $67 to $148 with a median of $125. This is 35% above the national median of $93. Based on 443 providers with published pricing data.

There is 1 family medicine physician in O Fallon and 41 across Missouri on our platform.

See full family medicine physician cost breakdown in Missouri
Patient Reviews

4.8

30 reviews · Mercy Clinic

Dr. Heather Williamson, DO, has received a generally positive sentiment from her patients, with an average rating of 4.8 out of 5 based on 30 ratings. Patients frequently commend her for her excellent bedside manner, noting her ability to listen attentively and provide thorough explanations of medical conditions and treatments. Many appreciate her approachable demeanor and the time she takes to address their concerns, contributing to a comfortable and reassuring experience during visits. However, some criticisms have been noted, primarily regarding wait times and scheduling issues. A few patients expressed frustration with delays in appointments, which may impact the overall experience. Additionally, while most reviews are positive, a small number of patients mentioned feeling rushed during consultations, suggesting that while Dr. Williamson is attentive, there may be instances where the time allocated for visits could be improved. Overall, Dr. Williamson is recognized for her expertise in family and occupational medicine, and her patients often highlight her compassionate approach. Prospective patients may want to consider the possibility of longer wait times but can expect a caring and knowledgeable physician who prioritizes patient engagement and understanding.

Location

Address

3449 PHEASANT MEADOW DR

STE 107

O Fallon, MO 63368

Phone

6363794140
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Momentary Lab sources provider data from the CMS NPI Registry and cost data from federal Transparency in Coverage files. Reviews aggregated from Healthgrades, Vitals, WebMD, and other public sources. Learn how we verify and update healthcare information.

This page is for informational purposes only and does not constitute medical advice. Cost estimates are based on publicly available negotiated rate data and may not reflect your actual out-of-pocket cost. Always consult with your healthcare provider and insurance company for accurate cost information and medical decisions.