Quick answers
- Which hospitals does Nathaniel A. Keller work at?
- Medicare's official clinician data lists Nathaniel A. Keller at 4 hospitals: Orlando Health, Orlando Health South Lake Hospital, Orlando Health St Cloud Hospital and Orlando Health-Health Central Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nathaniel A. Keller see patients?
- Medicare's clinician data lists 2 practice locations, including Orlando, FL and Plantation, FL. Call before your visit to confirm the address.
- What is Nathaniel A. Keller's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Nathaniel A. Keller accept Medicare assignment?
- Yes. Medicare's clinician data says Nathaniel A. Keller 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 Nathaniel A. Keller offer telehealth?
- Medicare's clinician data says Nathaniel A. Keller offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Nathaniel A. Keller?
- (407) 841-5111, as listed in official Medicare / NPI Registry data.
- What is Nathaniel A. Keller's NPI number?
- 1144411844. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nathaniel A. Keller works
Medicare's Facility Affiliation Data lists Nathaniel A. Keller at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Orlando HealthOrlando, FL · Acute Care Hospital · CCN 100006
- Orlando Health South Lake HospitalClermont, FL · Acute Care Hospital · CCN 100051
- Orlando Health St Cloud HospitalSaint Cloud, FL · Acute Care Hospital · CCN 100302
- Orlando Health-Health Central HospitalOcoee, FL · Acute Care Hospital · CCN 100030
Practice locations
Addresses where Nathaniel A. Keller is enrolled with Medicare (CMS data updated 2026-10-02).
- 1414 Kuhl AveOrlando, FL 32806 (407) 841‑5111
- 7469 NW 4th StPlantation, FL 33317 (954) 792‑0772
Group practices
Medicare enrollment lists Nathaniel A. Keller as a member of this group (CMS data updated 2026-10-02).
- Orlando Health Medical Group Inc2,287 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Orlando
Clinicians with the same Medicare primary specialty in Orlando, FL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1144411844 |
| 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