Mark Twain Medical Center
NPI 1508968819 · Critical Access Hospital · San Andreas, CA
Enrolled with Medicare as Part a Provider - Critical Access Hospital · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Twain Medical Center is a Critical Access Hospital organization in San Andreas, CA (NPI 1508968819).
Provider details
- NPI number
- 1508968819
- Entity type
- Organization
- Primary specialty
- Critical Access HospitalHospitals
- Organization subpart
- No
- Authorized official
- John Chivers, Chief Financial Officer(209) 754-2614
- License
- 030000058 (CA)
Specialties & taxonomies
Hospitals
Hospitals
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-05
- Last updated
- 2021-04-15
- Certified
- 2021-04-15
Frequently asked questions
- What is Mark Twain Medical Center's NPI number?
- Mark Twain Medical Center's National Provider Identifier (NPI) is 1508968819, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark Twain Medical Center?
- Mark Twain Medical Center is classified in the NPPES registry as Critical Access Hospital (Hospitals).
- Where is Mark Twain Medical Center located?
- Mark Twain Medical Center's practice location on file with NPPES is 768 Mountain Ranch Rd, San Andreas, CA 95249-9707.
- What is Mark Twain Medical Center's phone number?
- The practice phone number listed in the NPPES registry for Mark Twain Medical Center is (209) 754-3521.
- Does Mark Twain Medical Center accept Medicare?
- Mark Twain Medical Center is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Mark Twain Medical Center?
- The authorized official listed on Mark Twain Medical Center's NPPES record is John Chivers, Chief Financial Officer. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark Twain Medical Center's NPI active?
- Yes — Mark Twain Medical Center's NPI (1508968819) is active in the NPPES registry as of the last update on 2021-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.