Quick answers
- Which hospitals does Katherine A. Mass work at?
- Medicare's official clinician data lists Katherine A. Mass at 2 hospitals: Essentia Health Virginia and San Luis Valley Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Katherine A. Mass see patients?
- Medicare's clinician data lists 2 practice locations, including Alamosa, CO and Virginia, MN. Call before your visit to confirm the address.
- What is Katherine A. Mass's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Katherine A. Mass accept Medicare assignment?
- Yes. Medicare's clinician data says Katherine A. Mass 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 Katherine A. Mass?
- (713) 589-3000, as listed in official Medicare / NPI Registry data.
- What is Katherine A. Mass's NPI number?
- 1437787801. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Katherine A. Mass works
Medicare's Facility Affiliation Data lists Katherine A. Mass at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Essentia Health VirginiaVirginia, MN · Acute Care Hospital · CCN 240084
- San Luis Valley Regional Medical CenterAlamosa, CO · Acute Care Hospital · CCN 060008
Practice locations
Addresses where Katherine A. Mass is enrolled with Medicare (CMS data updated 2026-10-02).
- 106 Blanca AveAlamosa, CO 81101 (713) 589‑3000
- 1101 9th St NVirginia, MN 55792 (218) 741‑0150
Group practices
Medicare enrollment lists Katherine A. Mass as a member of these groups (CMS data updated 2026-10-02).
- The Duluth Clinic Ltd1,144 clinicians in the group
- Lutheran Hospital Association of the San Luis Valley150 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Alamosa
Clinicians with the same Medicare primary specialty in Alamosa, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437787801 |
| 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