Weight Loss Program

Conveniently located to serve the areas of Marin, San Francisco, Sonoma and Napa

Weight Loss Program

Weight loss is a pathway to renewed confidence, restored health, and redefining how you feel every day. But for many, progress stalls, even with dedication to diet and exercise.

At Plastic Surgery Specialty Group & MedSpa (PSSG), we approach weight loss as a guided journey, not a guessing game. Dr. Yngvar A. Hvistendahl and his team help patients throughout Marin County achieve healthy, sustainable weight loss by offering:

  • Medical supervision and individualized care for lasting results
  • Advanced tools like the InBody 570 to track fat, muscle, and metabolism
  • Treatments like semaglutide, tirzepatide, NAD+ Therapy, Lipo C Injections, and the Orbera Gastric Balloon
  • Real results, with patients losing between 25 and 75 pounds
  • Support from start to finish, including nutrition and lifestyle guidance

By blending clinical precision with compassionate care, the PSSG team is dedicated to providing a path that fits your life.

If you are interested in enhancing your weight loss efforts, call PSSG at (415) 925-2880 or contact us online to schedule your personal consultation.

PSSG also offers virtual consultations as well as resources for out-of-town patients.

About the PSSG Weight Loss Program

PSSG offers a structured, medically supervised program that helps patients achieve and maintain their ideal weight through advanced, evidence-based treatments.

Start Here: InBody 570 Analysis

Every patient begins their program with a detailed evaluation with the InBody 570 system. This device effectively provides a comprehensive breakdown of body fat percentage, lean muscle mass, water balance, and visceral fat levels. (1)

This information allows the PSSG team to:

  • Establish a precise starting point for tracking changes
  • Identify underlying metabolic or inflammatory concerns
  • Create measurable benchmarks for progress
  • Tailor nutrition and treatment recommendations for each patient

With these insights, patients can be assured that their treatment programs are guided by data. As patients lose weight, follow-up scans will reveal how and where patients lose fat and maintain lean mass.

Semaglutide Injections

Semaglutide is an injectable medication that supports weight loss by mimicking GLP-1, a natural hormone that regulates appetite and blood sugar. It helps patients feel fuller sooner and eat smaller portions, often resulting in significant weight loss. (2) Patients receive this as an at-home, weekly injectable as part of their structured nutrition plan, with regular follow-up appointments.

Tirzepatide Injections

Tirzepatide works similarly to semaglutide, but it works on two different hormonal pathways, rather than just one. (3) By activating both the GLP-1 (glucagon-like peptide-1) and GIP (gastric inhibitory polypeptide) receptors, tirzepatide potentially enhances the body’s ability to control hunger and blood sugar, potentially leading to more effective weight reduction.

NAD+ Therapy

NAD+ (nicotinamide adenine dinucleotide) is an essential coenzyme for cellular energy production and metabolism. (4) Our natural levels tend to decline with age; as a result, energy drops, recovery slows, and weight loss becomes more difficult. NAD+ Therapy replenishes these levels through IV infusions that boost energy, sharpen focus, and support healthy metabolic function. Patients often find that NAD+ Therapy complements other weight loss treatments by reducing fatigue and accelerating recovery from exercise.

Lipo C Injections

Lipo C Injections combine essential nutrients like methionine, inositol, choline, and vitamin B12 to enhance fat metabolism and support liver function. These injections help the body convert fat into usable energy and reduce fat storage in the liver.

When patients include these into their weight loss plan, they may experience improved endurance, elevated mood, and efficient fat loss.

Orbera Gastric Balloon

The Orbera gastric balloon provides an alternative option for patients seeking a non-surgical, temporary, yet highly effective solution.A soft, saline-filled balloon is placed in the stomach for six months, creating a sense of fullness and limiting portion sizes.

Each patient receives 12 months of guidance, combining the balloon’s effects with coaching, check-ins, and nutritional planning. This combination helps patients establish lasting habits that continue even after the balloon is removed.

Who Is A Good Candidate?

Ideal candidates include:

  • Adults who struggle to lose weight with dieting or exercise alone
  • Individuals who seek to lose a significant amount of weight
  • Those interested in non-surgical or minimally invasive options
  • Patients who desire measurable data and professional support
  • Individuals looking to improve metabolic health and energy

Personal Consultation

Scheduling a personal consultation is the first step in enrolling in our weight loss program. During your visit, the PSSG team will review your medical history, discuss previous weight loss attempts, and learn about your current habits and goals. They will also carry out the InBody 570 analysis at this time.

Based on this information, the team will create a personal program that fits your lifestyle and body. You will learn which treatments are best for your goals, how they work together, and what kind of progress you can expect over the coming months.

Call (415) 925-2880 or contact the PSSG team online to schedule your consultation and begin your personalized weight loss journey.

For those who cannot attend an in-person consultation, PSSG offers virtual consultation options.

Preparation

Before starting treatment, we will provide detailed preparation instructions to ensure a smooth and successful experience. We may require you to:

  • Complete your initial InBody 570 scan and lab work
  • Avoid certain medications with approval from your primary care provider
  • Stay hydrated and follow your pre-program nutrition plan, if applicable
  • Discuss any allergies or medical conditions
  • Set realistic goals for both weight and lifestyle improvements

It is best to establish healthy habits before beginning a weight loss program to see the best results.

Cost of Medical Weight Loss in Marin County

The cost of the PSSG Weight Loss Program depends on which therapies we include and how long you commit to the plan.

Options such as semaglutide, tirzepatide, and NAD+ Therapy vary in pricing based on dosage and frequency. During your consultation, the team will provide a transparent cost estimate and review financing options to help make your treatment more accessible.

Schedule a consultation today to explore your treatment options. If you have any questions or prefer to schedule over the phone, please call our Greenbrae office at (415) 925-2880.

FAQ

How does the PSSG weight loss program differ from standard diet programs?

The PSSG program combines medical supervision, data-driven progress tracking, and advanced therapies that target the biological causes of weight gain, not just calorie intake.

How will you monitor my weight loss progress?

We track your progress with InBody 570 scans that measure fat, muscle, and water composition, ensuring that results reflect genuine health improvements. You will attend regular follow-up appointments to monitor your weight loss progress as well.

Will I have to follow a strict diet on this weight loss program?

Your plan will include tailored nutritional guidance. The goal is to create sustainable habits rather than food restrictions. We recommend that all of our patients drink plenty of water and eat healthy, nutrient-rich foods.

Can I combine multiple weight loss treatments?

Yes. Many patients combine therapies such as semaglutide with NAD+ or Lipo C injections for enhanced results. However, patients can only be on one GLP-1 medication (either semaglutide or tirzepatide).

Is the Orbera Gastric Balloon permanent?

No. The balloon remains in place for six months before we remove it in a short, non-surgical procedure. Before the balloon is removed, we strive to help all of our patients establish sustainable, healthy habits for long-term weight loss.

How much weight will I lose with a medically-assisted weight loss program?

While results vary, most patients lose between 25 and 75 pounds over the course of their program when following all medical and lifestyle recommendations. The amount of weight a patient loses depends on what their initial body weight is and what is healthy for them.

References

  1. Sirirat R, Heskey C, Wilson C, et al. A Comparison of Body Composition Measurements Between Bioelectrical Impedance Analysis (InBody 570) and Air Displacement Plethysmography (BOD POD®). Current Developments in Nutrition. 2020;4(Supplement_2):1689-1689. doi:https://doi.org/10.1093/cdn/nzaa063_087
  2. Kommu S, Whitfield P. Semaglutide. PubMed. Published February 11, 2024. https://www.ncbi.nlm.nih.gov/books/NBK603723/
  3. Farzam K, Patel P. Tirzepatide. PubMed. Published 2024. https://www.ncbi.nlm.nih.gov/books/NBK585056/
  4. Conlon NJ. The Role of NAD+ in Regenerative Medicine. Plastic & Reconstructive Surgery. 2021;150:41S48S. doi:https://doi.org/10.1097/prs.0000000000009673
  5. Poulos DS. Orbera Gastric Balloon. Poulos, Stanley (psspecialists.com). Published July 31, 2025. Accessed November 3, 2025. https://www.psspecialists.com/weight-loss-program/orbera/

The information on this page is for patient education only and should not be considered personalized or generalized medical advice, nor a substitute for professional care. Results vary by individual and are not guaranteed. All medical treatments, including compounded semaglutide, compounded tirzepatide, NAD+ injections, Lipo C injections, and the Orbera balloon system, should be prescribed and administered under the supervision of a qualified healthcare provider.

Compounded semaglutide and tirzepatide, NAD+ injections, and Lipo C injections are not FDA-approved and may carry different risks and benefits than FDA-approved formulations or products. Before beginning any weight loss program or medical treatment, consult with a healthcare professional to determine whether these options are appropriate for your concerns and medical history.