Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Conrad Castellino M.D. Inc.

Q: What is the NPI number for Conrad Castellino M.D. Inc.?

The NPI for Conrad Castellino M.D. Inc. is 1720316078, a Type 2 (organization) record in the CMS NPPES registry.

Primary Care Clinic/Center in Merced, CA · enumerated 2009 · authorized official Conrad Castellino, Physician.

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

National Provider Identifier

1720316078

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Conrad Castellino M.D. Inc.

Practice address 520 W 27th St, Merced, CA, 95340

Phone (209) 383-4028

Fax (209) 383-4062

Enumeration date Nov 25, 2009

Last updated in NPPES Nov 25, 2009

Taxonomy & classification

261QP2300X Primary Care Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Conrad Castellino

Title Physician

Phone (209) 383-4028

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 the NPI number for Conrad Castellino M.D. Inc.?

The NPI for Conrad Castellino M.D. Inc. is 1720316078, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Conrad Castellino M.D. Inc.?

NPPES lists Conrad Castellino (Physician) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-25.