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About

Thinfast MD LLC offers a medically monitored weight loss program designed by medical experts, with personalized plans and coaching. Based in Arlington Heights, IL, the practice emphasizes medically supervised weight management rather than over-the-counter or risky medications. Key details: - Location: Arlington Heights, Illinois (two listed offices at 135 E Algonquin Rd, Arlington Heights, IL 60005) - Services: Medically supervised weight loss with personalized plans and coaching - Contact: info@thinfastmd.com; Phone: (708) 485-4050 - Website: thinfastmd.com - Notes: Focus is on medically monitored programs to reduce health risks associated with weight loss. No explicit Hinsdale or Brookfield location listed on the site.

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Clinic Type

Weight Loss Clinic

Address

135 E ALGONQUIN RD, Arlington Heights, Illinois 60005, us

Phone

(708) 485-4050

Email

info@thinfastmd.com

Opening Hours

Mon-Fri: 8am – 5pm; Saturday-Sunday: Closed

Website

https://thinfastmd.com/

Emergency Care

call 911

Services Offered

  • Medically monitored weight loss
  • OPTIFAST meal replacement programs
  • FDA-approved appetite suppressants (Phentermine, Phendimetrazine, Diethylpropion, Metformin)
  • Fat blaster shots and vitamin/injection options
  • Nutrition, behavioral changes, and exercise guidance
  • One-on-one and group counseling
  • Multidisciplinary team (doctors, nurses, registered dietitians)
  • Metabolism checks and medical evaluations
  • Metabolic testing (history and physical, blood test, EKG)
  • Lifestyle maintenance and long-term weight loss support

Technology & Equipment

  • OPTIFAST® meal replacement programs
  • FDA-approved medications
  • GLP-1/semaglutide referenced in extras but not explicitly stated as used here

Team

  • ThinFastMD Team, Doctors, nurses, and registered dietitians — Medical weight loss staff

Insurance & Payment

—

Not specified on page

Languages Spoken

—

Photos

ThinfastMD — Weight Loss Clinic clinic in Brookfield, IL — photo 1ThinfastMD — Weight Loss Clinic clinic in Brookfield, IL — photo 2ThinfastMD — Weight Loss Clinic clinic in Brookfield, IL — photo 3ThinfastMD — Weight Loss Clinic clinic in Brookfield, IL — photo 4ThinfastMD — Weight Loss Clinic clinic in Brookfield, IL — photo 5ThinfastMD — Weight Loss Clinic clinic in Brookfield, IL — photo 6ThinfastMD — Weight Loss Clinic clinic in Brookfield, IL — photo 7ThinfastMD — Weight Loss Clinic clinic in Brookfield, IL — photo 8

What Patients Say

Overall sentiment across review platforms: mixed

  • Better Business Bureau: A+ BBB rating (not BBB accredited) / 4.8 overall rating reported on company website
  • Yahoo Local: 5.0 (2)

Patients praise

  • Programs are physician-monitored and supervised
  • Patients report losing weight while on the program
  • Some patients appreciate specific doctors and staff members for their professionalism and listening skills
  • Easy access to a variety of services like B12 shots and structured meal replacements

Common complaints

  • Customer service complaints related to office policies and appointment fees
  • Concerns regarding weight maintenance after stopping medication
  • Mixed feedback on effectiveness of specific supplement/injection treatments

"This is a weight loss program that truly works. I love how the place is monitored by doctors, who provide programs that work for you."

— Yelp reviewer via MapQuest

"I have lost 25 lbs here but as soon as I stop taking the meds it comes right back and fast... BAD BAD customer service!"

— Reviewer via Unilocal

"Saw Dr Gill . She was just an amazing physician . Very good listener and very accurate diagnosis. Made her my PCP."

— Yelp/Yahoo Local reviewer

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

In the News

Information sourced from the clinic's website as of July 11, 2026.

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