Quick answers
- Where does Frederick C. Sitzler see patients?
- Medicare's clinician data lists 1 practice location in Vienna, VA. Call before your visit to confirm the address.
- What is Frederick C. Sitzler's specialty?
- Medicare lists Mental Health Counselor as the primary specialty.
- Does Frederick C. Sitzler accept Medicare assignment?
- Yes. Medicare's clinician data says Frederick C. Sitzler 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 Frederick C. Sitzler?
- (571) 385-0903, as listed in official Medicare / NPI Registry data.
- What is Frederick C. Sitzler's NPI number?
- 1912192741. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Frederick C. Sitzler is enrolled with Medicare (CMS data updated 2026-10-02).
- 8230 Old Courthouse Rd, Suite 500Vienna, VA 22182 (571) 385‑0903
Group practices
Medicare enrollment lists Frederick C. Sitzler as a member of this group (CMS data updated 2026-10-02).
- Womens Center16 clinicians in the group
Specialties
- Mental Health Counselorprimary
Other mental health counselors in Vienna
Clinicians with the same Medicare primary specialty in Vienna, VA — not a recommendation.
Clinician information
| Graduation year | 2001 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912192741 |
| 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
- 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