Quick answers
- Which hospitals does Mikko C. Helenius work at?
- Medicare's official clinician data lists Mikko C. Helenius at 1 hospital: Community Hospital of the Monterey Peninsula. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mikko C. Helenius see patients?
- Medicare's clinician data lists 3 practice locations, including Monterey, CA. Call before your visit to confirm the address.
- What is Mikko C. Helenius's specialty?
- Medicare lists Hospitalist as the primary specialty, and also Geriatric Medicine and Internal Medicine.
- Does Mikko C. Helenius accept Medicare assignment?
- Medicare's clinician data says Mikko C. Helenius may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Mikko C. Helenius?
- (831) 373-2731, as listed in official Medicare / NPI Registry data.
- What is Mikko C. Helenius's NPI number?
- 1962431940. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mikko C. Helenius works
Medicare's Facility Affiliation Data lists Mikko C. Helenius at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Community Hospital of the Monterey PeninsulaMonterey, CA · Acute Care Hospital · CCN 050145
Practice locations
Addresses where Mikko C. Helenius is enrolled with Medicare (CMS data updated 2026-10-02).
- 1575 Skyline DrMonterey, CA 93940 (831) 373‑2731
- 23625 Wr Holman HwyMonterey, CA 93940 (831) 625‑4311
- 23795 Holman HwyMonterey, CA 93940 (831) 624‑1875
Group practices
Medicare enrollment lists Mikko C. Helenius as a member of this group (CMS data updated 2026-10-02).
- Monterey Hospitalist Medical Group34 clinicians in the group
Specialties
- Hospitalistprimary
- Geriatric Medicinealso
- Internal Medicinealso
Other hospitalists in Monterey
Clinicians with the same Medicare primary specialty in Monterey, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1962431940 |
| 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