Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Mark Twain Medical Center

Q: What type of organization is Mark Twain Medical Center?

Mark Twain Medical Center is registered in NPPES as a Rural Health Clinic/Center (its primary provider taxonomy).

Rural Health Clinic/Center in Copperopolis, CA · enumerated 2006 · authorized official Nikki Ochoa, Chief Financial Officer.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1588725196

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Registry record

Entity type Organization (Type 2)

Legal business name Mark Twain Medical Center

Other name <Unavail>

Parent organization Mark Twain Medical Center

Practice address 430 Sawmill Creek Rd, Copperopolis, CA, 95228

Phone (209) 785-0000

Fax (209) 785-7085

Enumeration date Dec 13, 2006

Last updated in NPPES Aug 24, 2021

Taxonomy & classification

261QR1300X Rural Health Clinic/Center Ambulatory Health Care Facilities · License 030000058 (CA) Primary

Authorized official

Name Nikki Ochoa

Title Chief Financial Officer

Phone (209) 467-6442

Other identifiers

Identifier	Type	State	Issuer
=========	Other	-	WPS TRICARE
=========	Other	-	IRS - TAX ID
RHM08548F	Medicaid	CA	-
ZZZ61268Z	Other	-	BLUE SHIELD OF CA

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Mark Twain Medical Center?

Mark Twain Medical Center is registered in NPPES as a Rural Health Clinic/Center (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-24.