Quick answers
- Which hospitals does Catherine A. Biren work at?
- Medicare's official clinician data lists Catherine A. Biren 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 Catherine A. Biren see patients?
- Medicare's clinician data lists 1 practice location in Monterey, CA. Call before your visit to confirm the address.
- What is Catherine A. Biren's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Catherine A. Biren accept Medicare assignment?
- Yes. Medicare's clinician data says Catherine A. Biren 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 Catherine A. Biren?
- (831) 333-9008, as listed in official Medicare / NPI Registry data.
- What is Catherine A. Biren's NPI number?
- 1124021035. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Catherine A. Biren works
Medicare's Facility Affiliation Data lists Catherine A. Biren 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 Catherine A. Biren is enrolled with Medicare (CMS data updated 2026-10-02).
- 9781 Blue Larkspur Ln, Suite 100Monterey, CA 93940 (831) 333‑9008
Group practices
Medicare enrollment lists Catherine A. Biren as a member of this group (CMS data updated 2026-10-02).
- Csi Medical Group111 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Monterey
Clinicians with the same Medicare primary specialty in Monterey, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Womans Medical School |
| Graduation year | 1980 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124021035 |
| 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