

Slim Weight Loss Clinic in Brookline, Massachusetts, operates under the medical direction of Dr. Gary T. Marshall, MD, FACS, a board-certified surgeon who applies surgical precision to non-surgical weight management protocols. The clinic focuses exclusively on medically supervised weight loss using FDA-approved GLP-1 receptor agonist therapies, providing an alternative pathway for patients with obesity or weight-related metabolic conditions who seek pharmaceutical intervention before considering bariatric surgery. Dr. Marshall's dual expertise in surgical and medical weight management allows the clinic to offer comprehensive assessment of candidacy for peptide-based treatments and realistic counseling on expected outcomes based on individual metabolic profiles.
Slim Weight Loss Clinic's peptide therapy menu includes Liraglutide, Semaglutide, and Tirzepatide, with treatment protocols customized based on individual health goals and lab work. Additional peptide options may be available based on medical necessity and FDA guidelines.
Dr. Marshall conducts in-person initial consultations at the Brookline office, where he performs comprehensive metabolic assessments including body composition analysis, review of previous weight loss attempts, evaluation of endocrine function through thyroid and cortisol screening when indicated, and assessment of contraindications such as personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia syndrome type 2. The clinic does not offer telehealth services, requiring all patients to attend appointments in person for medication initiation, dose titration visits, and ongoing monitoring. This hands-on approach allows Dr. Marshall to directly assess injection technique, monitor for adverse effects such as gallbladder disease or pancreatitis, and adjust treatment protocols based on real-time clinical findings rather than patient-reported data alone.
Patients beginning GLP-1 therapy at Slim Weight Loss Clinic follow a structured protocol that includes baseline laboratory work (comprehensive metabolic panel, lipid panel, hemoglobin A1c, and thyroid function), nutritional counseling to optimize protein intake and prevent lean muscle loss during weight reduction, and scheduled follow-up visits every 4-6 weeks during the titration phase. The clinic provides training on proper subcutaneous injection technique, typically in the abdomen or thigh, and supplies patients with sharps containers and detailed instructions on medication storage, as these peptides require refrigeration until first use. Dr. Marshall emphasizes that these medications work by slowing gastric emptying, reducing appetite through central nervous system pathways, and improving glycemic control, but they are not appetite suppressants in the traditional stimulant sense and require patient commitment to modified eating patterns to achieve sustained results.
Slim Weight Loss Clinic distinguishes itself in the greater Boston area through its singular focus on peptide-based weight management rather than offering a broad menu of aesthetic or wellness services. The clinic does not combine weight loss medications with unrelated treatments such as IV therapy, hormone replacement, or cosmetic procedures, allowing Dr. Marshall to maintain deep expertise in incretin pharmacology and the management of treatment-related complications. Patients seeking weight loss support in Brookline benefit from working with a physician who understands both the medical and surgical aspects of obesity treatment, can identify candidates who may eventually require bariatric intervention despite pharmaceutical therapy, and provides continuity of care throughout the weight management journey. The clinic accepts most major insurance plans for office visits, though coverage for weight loss medications varies significantly by carrier and often requires prior authorization with documentation of BMI over 30 or BMI over 27 with weight-related comorbidities.

Dr. Gary T. Marshall· MD, FACS
Dr. Gary T. Marshall, MD, FACS
Surgeon
Dr. Gary T. Marshall practices in the New York City area and specializes in general surgery and critical care medicine.
Dr. Gary Kawesch, MD, FACS
Surgeon
Dr. Gary Kawesch practices in the Los Angeles area graduated with the highest Summa Cum Laude and Phi Beta Kappa honors from Yale University.
Dr. Thierry Jacquemin, International board-certified physician
Internal Medicine
Dr. Thierry Jacquemin has spent the last decade of his professional life helping his patients live better, smarter, longer, and prettier.
Semaglutide Weight Management
An injectable medication that helps manage weight by mimicking a hormone that regulates appetite.
Metformin Weight Management
An oral medication that helps manage blood sugar levels and can aid in weight loss.
Liraglutide Weight Management
An injectable medication similar to Semaglutide that helps with weight management.
Tirzepatide Weight Management
An injectable medication that acts on multiple receptors to aid in weight loss.
MyPeptideMatch.com is an independent directory. We do not provide medical advice. Always consult a qualified healthcare provider before starting any peptide therapy.

