Providers
31
Locations
3
Specialties
12
Insurance Plans
13
About Mark Twain Medical Center
Background and practice information
Mark Twain Medical Center is a established group medical practice based in San Andreas, CA, with 31 affiliated healthcare providers practicing across 3 locations.
The practice brings together providers across multiple specialties, including family practice, nurse practitioner, physician assistant, and clinical social worker. Its providers are in-network with 13 insurance plans, though coverage varies by individual provider and should be confirmed before scheduling.
Practice Locations
3 locations
Mark Twain Medical CenterPrimary
768 MOUNTAIN RANCH RD, San Andreas, CA 952499707
(209) 754-3521
Affiliations
Hospitals where providers at Mark Twain Medical Center hold admitting privileges
Insurance Networks
Accepted insurance plans and networks
Mark Twain Medical Center accepts 72 plans from 9 insurers, including Cigna, Aetna, UnitedHealthcare.
Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.
Specialties at Mark Twain Medical Center
Provider specialties represented at this practice
Healthcare Providers in San Andreas
18 providers practice here
Donald Greco, MD
Anesthesiology
San Andreas, CA
Karen Karam, CSW
Clinical Social Worker
San Andreas, CA
Cecilia Mcpherson, CSW
Clinical Social Worker
San Andreas, CA
Tahir Chaudhry, DO
Family Practice · Telehealth
San Andreas, CA
Dean Kelaita, MD
Family Practice
San Andreas, CA
John Krpan, DO
Family Practice
San Andreas, CA
Kaitlyn Gilman
General Surgery
San Andreas, CA
James Gonzales, MD
General Surgery
San Andreas, CA
David Melniczek, MD
General Surgery
San Andreas, CA
Laura Jones, MD
Internal Medicine
San Andreas, CA
Ron Christian Crisostomo, NP
Nurse Practitioner
San Andreas, CA
Guadalupe Robles, NP
Nurse Practitioner
San Andreas, CA
Renee Perry, DO
Obstetrics/gynecology
San Andreas, CA
Edward Cahill, MD
Orthopedic Surgery
San Andreas, CA
Michael Laird, MD
Orthopedic Surgery
San Andreas, CA
Roger Rogalski, MD
Orthopedic Surgery
San Andreas, CA
Lindell Maloney, PA
Physician Assistant
San Andreas, CA
Mikel Meyer, DO
Preventive Medicine
San Andreas, CA
Frequently Asked Questions
Common questions about Mark Twain Medical Center
How many providers are at Mark Twain Medical Center?
Mark Twain Medical Center has 31 affiliated healthcare providers across 3 locations. You can browse the full provider roster, with specialties and locations, on this page.
What specialties does Mark Twain Medical Center offer?
The practice includes providers in family practice, nurse practitioner, physician assistant, and clinical social worker, among others. Use the specialty filter on the provider list to find a specific type of provider.
What insurance does Mark Twain Medical Center accept?
Providers at Mark Twain Medical Center are collectively in-network with 13 insurance plans. Acceptance varies by individual provider, so confirm your specific plan with the office before your visit.
Where is Mark Twain Medical Center located?
Mark Twain Medical Center's primary location is in San Andreas, CA, with 2 additional locations listed on this page. See the contact section for the full address and phone number.
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