Quick answers
- Which hospitals does Nathan Lewis work at?
- Medicare's official clinician data lists Nathan Lewis at 1 hospital: Huntington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nathan Lewis see patients?
- Medicare's clinician data lists 1 practice location in Pasadena, CA. Call before your visit to confirm the address.
- What is Nathan Lewis's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Nathan Lewis accept Medicare assignment?
- Yes. Medicare's clinician data says Nathan Lewis 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 Nathan Lewis?
- (626) 796-8181, as listed in official Medicare / NPI Registry data.
- What is Nathan Lewis's NPI number?
- 1912923004. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nathan Lewis works
Medicare's Facility Affiliation Data lists Nathan Lewis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Huntington HospitalPasadena, CA · Acute Care Hospital · CCN 050438
Practice locations
Addresses where Nathan Lewis is enrolled with Medicare (CMS data updated 2026-10-02).
- 675 S Arroyo Pkwy, Suite 310Pasadena, CA 91105 (626) 796‑8181
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Pasadena
Clinicians with the same Medicare primary specialty in Pasadena, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912923004 |
| 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