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Avant Wellness
Physician status unknown NPI recorded: 1811444268

Avant Wellness

1355A W Washington Blvd, Chicago, IL 60607, USA
4.6 Google review total in record: 27.

About this record

Website listed in record:
https://avantwholehealth.com Not a source citation for every field.
Phone listed in record:
+1 312-585-8233. Confirm this contact detail with the clinic. A recorded number is not a verified contact check.
Record updated:
Upstream timestamp (scope unspecified):
Not available.
Physician, NPI and OIG check sources and dates:
Not available.
Treatment, price and contact field source dates:
Not available.

Neither timestamp establishes a credential, treatment or safety check. An NPI in the record is an identifier, not credential verification. A reported physician flag does not establish current staffing or licensure. Missing or false flags are not clearance findings.

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About this clinic

Avant Wellness, a functional medicine clinic in Chicago led by Dr. Kathryn Gies, focuses on personalized integrative care rooted in diagnostic workup and evidence-based treatment sequencing rather than symptom management alone. The practice conducts comprehensive lab assessment to identify underlying metabolic, hormonal, and nutritional drivers of chronic illness, then develops individualized protocols addressing root causes. Treatment typically incorporates dietary modification, targeted supplementation, lifestyle optimization, and where indicated, adjunctive therapies such as IV nutrient support or peptide protocols. The clinic serves patients with chronic fatigue, hormone imbalance, autoimmune conditions, and age-related decline, positioning functional medicine as a complement to or alternative entry point relative to conventional care.

Treatments offered

IV Therapy

Insufficient evidence

Peptide Therapy

Experimental evidence

Contact information

View on map
1355A W Washington Blvd, Chicago, IL 60607, USA
Website

Clinic specialties

IV & Nutrient Therapy Peptide Therapy

Office hours

Monday – Friday
9am – 4pm
Saturday – Sunday
Closed

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Google reviews in this record

Google review total in record: 27. Google data last synced: . Sync time is not the date of a clinical or credential check.

Showing an imported sample of 5 Google reviews. Up to three appear below; the dialog contains the available imported rows. This sample is not a clinical assessment.

4.6

Google aggregate rating in record, not the sample average.

Distribution of 5 imported reviews, not all Google reviews.

5 ★ 80%
4 ★ 0%
3 ★ 0%
2 ★ 20%
1 ★ 0%

I know many people have had positive experiences with Dr. Gies, which is why I chose to work with her after a breast cancer diagnosis in July 2024. I was looking for a provider who could offer holistic guidance through a very vulnerable time. While I appreciated her functional approach and the kindness of her office staff, our time together ultimately wasn’t the right fit for me. Over the course of a year, I struggled with a lack of continuity and clarity in my care. Appointments often felt disconnected, and despite following her supplement plan closely for almost a year, I didn’t see the progress I had hoped for. When I brought up questions about my lab results, the conversation became unexpectedly tense, which left me feeling unheard and dismissed during a time when I needed support most. That said, I recognize that every patient-provider relationship is different. Dr. Gies may be a great match for others, but my experience left me feeling uncertain and unsupported. I share this with the hope that it helps others make the choice that’s best for their care journey.

Jessica Mauro · Published July 9, 2025

I have had an extremely positive experience as a patient of Avant Wellness. I appreciate Dr. Gies' comprehensive and strategic approach. Unlike so many other practitioners I've seen, she has stuck with me to identify the root causes of my complex health issues. The rest of the team is also wonderful - the nutritionist is awesome and super helpful in ensuring I understand the treatment plan and am supported, and the office staff is also on top of it. I feel well cared for and have experienced positive results. I highly recommend this practice!

Jill Ramirez · Published May 20, 2024

I have been a patient with Dr. Gies for two years. I went to her after being wheeled around for months to various top doctors from the top medical schools in the country. These "top doctors" were all scratching their chins, unable to figure out my case. Dr. Gies took the challenge. Between her and her extended network, they were able to properly diagnose exactly what was going on and quite literally saved my life - nothing short of miraculous. She is easily the most brilliant doctor I've worked with and I couldn't ask for a better quarterback to be running plays to better my health. Don't let this quaint little office in Chicago fool you - Dr. Gies and her staff punch way above their weight class when it comes to giving patients the care they need that no one else can.

Brad C · Published July 8, 2025

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