Quick answers
- Where does Nathaniel D. Witmer see patients?
- Medicare's clinician data lists 1 practice location in Valencia, CA. Call before your visit to confirm the address.
- What is Nathaniel D. Witmer's specialty?
- Medicare lists Podiatry as the primary specialty.
- Does Nathaniel D. Witmer accept Medicare assignment?
- Yes. Medicare's clinician data says Nathaniel D. Witmer 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 Nathaniel D. Witmer?
- (661) 481-2400, as listed in official Medicare / NPI Registry data.
- What is Nathaniel D. Witmer's NPI number?
- 1497172712. 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 Nathaniel D. Witmer is enrolled with Medicare (CMS data updated 2026-10-02).
- 23803 McBean Pkwy, Suite 201Valencia, CA 91355 (661) 481‑2400
Group practices
Medicare enrollment lists Nathaniel D. Witmer as a member of this group (CMS data updated 2026-10-02).
- Providence Facey Medical Foundation385 clinicians in the group
Specialties
- Podiatryprimary
Other podiatrists in Valencia
Clinicians with the same Medicare primary specialty in Valencia, CA — not a recommendation.
Clinician information
| Credential | DPM |
|---|---|
| Medical school | California School Of Podiatric Medicine |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497172712 |
| 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