Sparrow Health & Performance is an integrative, natural-first medical clinic at 611 Doug Baker Blvd in Birmingham, Alabama.
Clinicians
- David Calderwood, MD — Medical Director
- Libby Lowenthal, DO — oncology and lifestyle medicine
- Alice Tzeng, MD — sees patients in Huntsville
- Tracy Thornton, DNP, ACNS-BC, FNP-C — family nurse practitioner
- Margaret Barringer, MSN, AGACNP-BC; Kim Darabaris, MSN, FNP-C; Lindsay Mitchell, MSN, FNP-C; Jamie Hill, MSN, FNP-C — nurse practitioners
Regenerative treatments offered
- Stem cell therapy — uses the patient’s own fat (adipose) tissue, collected by a minimally invasive procedure
- PRP — offered for injuries, hair loss and skin concerns
- Ozone — EBO2 and ozone insufflation are listed
- Other listed services include Regenerative Softwave therapy, NAD+, IV therapy, hyperbaric oxygen and PEMF
Conditions the practice lists
For PRP, the site names sprained knees, back pain, tendonitis, golfer’s and tennis elbow, hair loss, acne scars, stretch marks, fine lines and wrinkles. Its stem cell page names arthritis, degenerative spine and disc disease, and orthopedic conditions. The website also lists autoimmune disease, lupus, multiple sclerosis, Parkinson’s disease, COPD, asthma, cardiomyopathy, Crohn’s disease, scleroderma and stroke recovery as conditions being studied.
What to know before you call
- The site offers a free PRP consultation by phone at 205-783-1020 (call or text).
- Stem cell costs are set after a medical evaluation. Financing and FSA/HSA information pages are linked.
- Huntsville visits with Dr. Tzeng are $400 for a 1-hour initial consultation.
RPG verification notes
- Clinician credentials listed on the staff page
- Website shows an FDA disclaimer and says some stem cell treatment may be considered investigational
- Prices for regenerative treatments not published
Last verified by Regen Provider Guide: October 2026. Confirm treatment details, candidacy, insurance coverage and costs directly with the practice. RPG makes no claim about the effectiveness of any treatment.
