Quick answers
- Where does Christian Witherell see patients?
- Medicare's clinician data lists 4 practice locations, including Stony Brook, NY, Southold, NY and Greenport, NY. Call before your visit to confirm the address.
- What is Christian Witherell's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Christian Witherell accept Medicare assignment?
- Yes. Medicare's clinician data says Christian Witherell 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.
- Does Christian Witherell offer telehealth?
- Medicare's clinician data says Christian Witherell offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Christian Witherell?
- (631) 632-8850, as listed in official Medicare / NPI Registry data.
- What is Christian Witherell's NPI number?
- 1144948175. 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 Christian Witherell is enrolled with Medicare (CMS data updated 2026-10-02).
- 169 Putnam Hall, South CampusStony Brook, NY 11794 (631) 632‑8850
- 19995 Soundview AveSouthold, NY 11971 (631) 260‑1326
- 201 Manor PlGreenport, NY 11944 (631) 477‑1000
- 56475 Main Rd, Bldg BSouthold, NY 11971 (631) 260‑1326
Group practices
Medicare enrollment lists Christian Witherell as a member of these groups (CMS data updated 2026-10-02).
- Stony Brook Psychiatric Associates University Faculty Practice Corpor104 clinicians in the group
- Christian Witherell NP in Psychiatry PLLC2 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Stony Brook
Clinicians with the same Medicare primary specialty in Stony Brook, NY — not a recommendation.
Clinician information
| Graduation year | 2022 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1144948175 |
| 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