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Functional Medical Institute
MD on staff OIG Cleared NPI Verified

Functional Medical Institute

6048 S Sheridan Rd, Tulsa, OK 74145, United States, 74145 Tulsa, OK
4.70

About this clinic

Functional Medical Institute, a functional medicine clinic in Tulsa, offers peptide therapy, prolotherapy, and IV chelation therapy alongside age-management protocols and genetic testing. The practice takes an integrative approach to chronic disease, hormone optimization, and longevity, with treatment plans individualized following comprehensive lab work and genetic assessment. Peptide therapy is used to support tissue repair and metabolic function, while prolotherapy addresses musculoskeletal and joint conditions. Patients receive ongoing monitoring as protocols are adjusted. The clinic emphasizes evidence-based functional medicine as an alternative to symptom-management alone, serving patients seeking to optimize physiologic function acro

Treatments offered

Peptide Therapy

Experimental evidence

Chelation Therapy

Strong evidence

IV Therapy

Insufficient evidence

Contact information

View on map
6048 S Sheridan Rd, Tulsa, OK 74145, United States
74145 Tulsa, OK
Website

Office hours

Monday – Thursday
8am – 5pm
Friday
8am – 12pm
Saturday – Sunday
Closed

Accreditations

Fellow IFM

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Patient reviews

4.70

Based on 202 Google reviews

5 ★
4 ★
3 ★
2 ★
1 ★

I have to say that I love Dr. Mark and the idea of a functional medical doctor. We get our supplements through FMI and enjoy a big savings. Now for the not so good: upfront you get a lot of expensive blood tests and then spend a year paying them off. The blood tests are helpful but sooo expensive I have to say not worth it. Also, having a doctor in a different state was not my best idea. Now for 6 more months we continue to pay a lot per month with no care. We will think through local options when we finally finish paying off the year. Kind of wish we lived in OK😂

Teresa Eddy · March 1st, 2026

We love Drs. Mark and Michele Sherwood!! Seriously, I can't say enough good about them! Not only are they absolute experts in functional medicine, they are really good people. They care more about their patients than they do about their business. I have known and worked with Dr. Mark for several years. What you see is what you get! 100% real, authentic awesomeness! I completely trust him and Michele with one of my most valuable possessions… My health.

John Hart · October 29th, 2025

The staff at Functional Medical Institute is exceptional. Jaide Serna just helped me with a prescription. She jumped on it right away and I received it in record time. I had a question about the prescription and she answered my email the same day I sent the question to her. That is great customer service!

Patsy Jacob · November 18th, 2025

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