Quick answers
- Which hospitals does Ioannis Konstantinidis work at?
- Medicare's official clinician data lists Ioannis Konstantinidis at 1 hospital: Huntington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ioannis Konstantinidis see patients?
- Medicare's clinician data lists 2 practice locations, including Pasadena, CA. Call before your visit to confirm the address.
- What is Ioannis Konstantinidis's specialty?
- Medicare lists Surgical Oncology as the primary specialty, and also General Surgery.
- Does Ioannis Konstantinidis accept Medicare assignment?
- Yes. Medicare's clinician data says Ioannis Konstantinidis 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 Ioannis Konstantinidis offer telehealth?
- Medicare's clinician data says Ioannis Konstantinidis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ioannis Konstantinidis?
- (310) 423-1153, as listed in official Medicare / NPI Registry data.
- What is Ioannis Konstantinidis's NPI number?
- 1477789972. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ioannis Konstantinidis works
Medicare's Facility Affiliation Data lists Ioannis Konstantinidis 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 Ioannis Konstantinidis is enrolled with Medicare (CMS data updated 2026-10-02).
- 10 Congress St, Suite 210Pasadena, CA 91105 (310) 423‑1153
- 100 W California BlvdPasadena, CA 91105 (310) 665‑7200
Group practices
Medicare enrollment lists Ioannis Konstantinidis as a member of this group (CMS data updated 2026-10-02).
- Cedars-Sinai Medical Care Foundation1,692 clinicians in the group
Specialties
- Surgical Oncologyprimary
- General Surgeryalso
Other surgical oncologists in Pasadena
Clinicians with the same Medicare primary specialty in Pasadena, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1477789972 |
| 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