Everself SIS (Sleeve-in-Sleeve) is a 45 minute endoscopic procedure that uses internal sutures to re-tighten a stretched gastric sleeve back toward its original post-surgical size. Restart your weight loss without another surgery.
As seen in
We invented SIS
In our Harvard lab.
~15%
Average total body weight loss.
30–45 min
Outpatient procedure, home the same day.
No incisions
Endoscopic — through the mouth.
Is this you?
Meaningful weight loss after a sleeve — without another operation, without a lifelong prescription.
Had a gastric sleeve and the weight came back.
Don't want another surgery, but want to get back to your base weight.
Want a real program around the procedure, not just one follow-up.
How it works
1
Under sedation, your physician threads an endoscope down to your sleeve and places a running suture line that gathers the stretched walls back in. Same-day discharge.
2
The new restriction is felt within hours. Liquids the first few days, then soft foods, then regular eating — paced by your dietitian. Most patients back at work in 1–3 days.
3
A stretched sleeve is the symptom; the eating patterns that re-stretch it are what we're solving for. 12+ check-ins, smart scale, patient app, 24/7 clinical on-call.
The doctor who invented this
Not all SIS is the same. Pattern, depth, the hands at the controls — every detail decides how much weight you lose. Everself SIS is the original protocol, performed by the team that invented it.
Harvard Medical School Professor · Everself co-founder
"Too many patients were regaining weight after gastric sleeve and bypass surgery, only to be told their next option was another surgery. I believed there had to be a better way. After a decade of research at Harvard, we developed a non-surgical approach to revision. Today, Everself brings that protocol directly to patients."
Leading physicians trained and qualified by the inventor.
Dr. Pichamol Jirapinyo
Co-founder · Harvard faculty
Dr. Christopher McGowan
Charlotte · 5,000+ ESG cases
Dr. Janese Laster-Butler
Washington, DC · 4x board-certified
Dr. Brian Lim
Orange County · UC Riverside
Dr. Ali Abbas
Tampa · Harvard-trained
Dr. Avik Sarkar
New Jersey · 2x board-certified
Dr. Haroon Shahid
New Jersey · Jefferson-trained
Dr. Lindsey Merritt
Jacksonville · Borland Groover
Dr. Zaid Rana
Miami · Director of Endoscopy
Dr. Zachary Callahan
Nashville · Jefferson-trained surgeon
Dr. Julien Fahed
Houston · advanced endoscopist
Dr. Mustafa Huseini
Detroit · Brigham-Harvard fellow
Dr. Daniel Szvarca
Charleston · Hopkins & Harvard
Dr. Shehriyar Mehershahi
Dallas · interventional GI
Endoscopic vs surgical revision
Surgical sleeve revision re-cuts and re-staples living tissue under general anesthesia and takes 2–4 weeks to recover from. Everself SIS re-tightens your sleeve with internal stitches placed through the mouth — no incisions, just 1–3 days of typical recovery.
Published meta-analyses show that Everself SIS delivers similar weight loss outcomes to surgical sleeve revision, with a significantly lower complication rate.
The Everself Program
The success of a gastric sleeve revision depends on both what happens in the procedure room and the months that follow. Our 12-month program is built around the full arc. Most clinics manage 1–6 check-ins for the year; we map 12+ to the recovery curve.
Nurse practitioner
Registered dietitian
Nurse care manager
Patient coordinator
"The staff is incredible to say the least and they really do demonstrate their care for their clients."
Two to three days of rest and gentle return to normal, then a full first month with your dedicated nurse care manager checking in daily and an Everself provider one tap away around the clock.
1 on 1 coaching from a personal dietitian, weekly group sessions, and (if you want it) an optional GLP-1 add-on to amplify results in the first year.
Fine-tune your weight loss and graduate into a lifetime patient community. Final provider check-ins make sure you're on track for years, not months.
What patients say
I feel empowered, supported, and excited for what lies ahead. I'm embracing a healthier lifestyle and, thanks to Everself, I know this time it's going to stick.
I've lost an incredible 45 lbs and 25 inches, and I feel amazing. The entire team has been fantastic.
I no longer feel like a fraud in my job; I have more stamina for softball and volleyball; and I am excited to go dress shopping!
Where we are
Virtual consultations, procedure in-clinic, follow-ups by video through month twelve. Many patients fly in for the procedure day.
California
Temecula Valley
Florida
Jacksonville · Miami · Tampa
Massachusetts
Boston
Michigan
Detroit
New Jersey
New Jersey
North Carolina
Charlotte
South Carolina
Charleston
Tennessee
Nashville
Texas
Dallas · Houston
Washington, D.C.
Washington DC
Looking for something other than sleeve revision?
We also offer three other non-surgical procedures. We'll help you find the right one in your consultation.
Pricing
Self-pay, no insurance to wrangle. Financing through Cherry or CareCredit, with 0% APR options for qualified applicants.
See full pricing breakdown →$11,995
all-inclusive
Financing from $275/month via Cherry and CareCredit.
FAQ
