Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Guesthouse Medical

Q: What type of organization is Guesthouse Medical?

Guesthouse Medical is registered in NPPES as a Primary Care Clinic/Center (its primary provider taxonomy).

Primary Care Clinic/Center in Arcadia, CA · enumerated 2018 · authorized official Nayiri Ketchedjian, Nurse Practitioner.

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

National Provider Identifier

1770090433

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Registry record

Entity type Organization (Type 2)

Legal business name Guesthouse Medical

Practice address 140 E Santa Clara St Ste 22, Arcadia, CA, 91006

Phone (626) 399-5426

Enumeration date Jan 3, 2018

Last updated in NPPES Jan 3, 2018

Taxonomy & classification

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

Authorized official

Name Nayiri Ketchedjian

Title Nurse Practitioner

Phone (626) 399-5426

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 type of organization is Guesthouse Medical?

Guesthouse Medical is registered in NPPES as a Primary Care Clinic/Center (its primary provider taxonomy).

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-03.