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About

Fairfax Colon & Rectal Surgery, P.C. is a private, physician-owned colorectal surgery practice established in 1984 and based in Fairfax, VA. The team includes eight surgeons and a physician assistant, with multiple office locations in Fairfax, Reston, Fair Oaks, Alexandria, and Loudoun. Services emphasize colorectal and anorectal care, including laparoscopic and robotic approaches (SILS, TEMS) and colonoscopic procedures performed primarily at their in-house center. The practice operates from 8 offices across the DC metro region (HQ at 2710 Prosperity Ave, Fairfax) and offers patient care, clinical research, and a focus on a streamlined, in-office surgical environment. Key contact: 703-280-2841.

Clinic Type

Colorectal Surgery (multi-location group)

Address

2710 Prosperity Ave, Ste 200 Fairfax, VA 22031; 3700 Joseph Siewick Dr., Ste 202 Fairfax, VA 22033; 1800 N. Beauregard St, Ste 310 Alexandria, VA 22311; 7051 Heathcote Village Way, Ste 135 Gainesville, VA 20155; 44055 Riverside Pkwy, Ste 102 Lansdowne, VA 20176

Phone

703-280-2841

Email

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Opening Hours

Not published — contact the clinic to confirm hours.

Emergency Care

Hospital affiliations: Inova Fair Oaks; Novant UVA Haymarket Medical Center; etc.

Services Offered

  • Colon and rectal surgery
  • Proctology
  • Colorectal care
  • Surgical treatments for colorectal conditions
  • Stool/ bowel management
  • Preoperative and postoperative care
  • Outpatient surgery
  • Hospital affiliations

Team

  • Fairfax-Merrifield Location Team — Clinic locations and staff

Insurance & Payment

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Languages Spoken

  • English

FAQs

What are the office locations?

Fairfax-Merrifield, Fairfax-Fair Oaks, Alexandria, Gainesville/Haymarket, Loudoun.

Do you offer same-day appointments?

Same day appointments at most locations.

How can I view my statement?

Please visit our patient portal to view your statement.

Awards & Accreditations

  • Top Doctors in Colon & Rectal Surgery (nominated by physician-peers)
  • Top Doctors in Colon & Rectal Surgery (nomination by physician-peers in DC, MD, VA)

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • Birdeye (aggregated): 4.8 stars (1,645 reviews across aggregated platforms)

Patients praise

  • Professional, knowledgeable, and expert medical staff
  • Compassionate and attentive care
  • Clear and thorough explanations of medical conditions and procedures
  • Clean and well-maintained facilities

Common complaints

  • Lengthy wait times
  • Administrative and scheduling challenges
  • Billing discrepancies or miscommunications
  • Difficulties in scheduling appointments or reaching staff by phone

"Dr. Tillou is an exceptional and highly skilled surgeon - I wouldn’t go to anyone else. He took the time to really listen to and understand all of my concerns... His office staff were attentive and returned calls quickly."

— Patient review via Birdeye

"They make it impossible to schedule an appointment let alone to speak to someone live. Their recording system is completely broken. They take your personal information and no one answers."

— Patient review via MapQuest

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

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

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