Quick answers
- Which hospitals does John D. Tillou work at?
- Medicare's official clinician data lists John D. Tillou at 4 hospitals: Inova Fair Oaks Hospital, Inova Fairfax Hospital, UVA Health Haymarket Medical Center and UVA Health Prince William Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John D. Tillou see patients?
- Medicare's clinician data lists 3 practice locations, including Fairfax, VA, Springfield, VA and Gainesville, VA. Call before your visit to confirm the address.
- What is John D. Tillou's specialty?
- Medicare lists Colorectal Surgery (Proctology) as the primary specialty.
- Does John D. Tillou accept Medicare assignment?
- Yes. Medicare's clinician data says John D. Tillou accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John D. Tillou?
- (703) 280-2841, as listed in official Medicare / NPI Registry data.
- What is John D. Tillou's NPI number?
- 1518232685. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John D. Tillou works
Medicare's Facility Affiliation Data lists John D. Tillou at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Inova Fair Oaks HospitalFairfax, VA · Acute Care Hospital · CCN 490101
- Inova Fairfax HospitalFalls Church, VA · Acute Care Hospital · CCN 490063
- UVA Health Haymarket Medical CenterHaymarket, VA · Acute Care Hospital · CCN 490144
- UVA Health Prince William Medical CenterManassas, VA · Acute Care Hospital · CCN 490045
Practice locations
Addresses where John D. Tillou is enrolled with Medicare (CMS data updated 2026-10-02).
- 2710 Prosperity Ave, Suite 200Fairfax, VA 22031 (703) 280‑2841
- 6230 Rolling Rd, Suite IjSpringfield, VA 22152 (571) 565‑6460
- 7051 Heathcote Village Way, Suite 135Gainesville, VA 20155 (703) 280‑2841
Group practices
Medicare enrollment lists John D. Tillou as a member of these groups (CMS data updated 2026-10-02).
- Inova Health Care Services1,817 clinicians in the group
- Fairfax Colon and Rectal Surgery PC12 clinicians in the group
Specialties
Find other Colorectal Surgery (Proctology) doctors in Virginia →
Other colorectal surgeons in Fairfax
Clinicians with the same Medicare primary specialty in Fairfax, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Virginia School Of Medicine |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518232685 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians