NORTHWEST GERIATRICS
NPI 1497706774
Internal Medicine - Geriatric Medicine in Mercer Island, WA

Active since May 12, 2006CLIA 50D2157122 · Waiver
9725 SE 36TH ST., SUITE 214, MERCER ISLAND, WA 98040(206) 275-3588(206) 275-2073 Get Directions Write a Review

NPPES record last updated: January 5, 2017. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Northwest Geriatrics NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NORTHWEST GERIATRICS (NPI 1497706774) is a healthcare organization registered as a geriatric medicine in Mercer Island, Washington and active in the NPI registry since May 2006. The organization holds a CLIA Waiver certificate valid through April 4, 2028 and lists John H. Addison, Owner, as its authorized official.

NPPES Registry Identity

NPI1497706774
Entity TypeOrganization
Primary Taxonomy207RG0300X
Legal Business NameJOHN H. ADDISON MD PS
Location Address9725 SE 36TH ST., SUITE 214Mercer Island, WA 98040
Mailing AddressPo Box 1526Mercer Island, WA 98040 · (206) 275-3588 · Fax (206) 275-2073
Fax(206) 275-2073
Organization SubpartNo
Authorized OfficialJohn H. AddisonOwner · (206) 275-3588
Enumeration DateMay 12, 2006
Last NPPES UpdateJanuary 5, 2017
NPI 1497706774 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
Definition

An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

9725 SE 36TH ST., Mercer Island, WA 98040

Other Names 1

Doing Business AsNorthwest Geriatrics

Other Identifiers 2

Medicare UPINAB33253WA
Medicare ID-Type UnspecifiedGAB33253WA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 50D2157122

Northwest Geriatrics · Mercer Island, WA
Active · expires Apr 4, 2028
CLIA Number50D2157122
Laboratory TypePhysician Office
Certificate Effective DateOctober 30, 2018
Certificate Expiration DateApril 4, 2028
Laboratory DirectorJohn H. Addison
Laboratory Phone(206) 275-3588
Laboratory LocationNorthwest Geriatrics9725 SE 36th St Ste 214, Mercer Island, WA 98040
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John H. Addison MD Ps's NPI number?

The NPI number for John H. Addison MD Ps is 1497706774. It was assigned to this organization in the NPPES registry on May 12, 2006. The provider is doing business as Northwest Geriatrics.

Where is John H. Addison MD Ps located?

John H. Addison MD Ps is located at 9725 SE 36th St. Suite 214, Mercer Island, WA 98040. The listed phone number is (206) 275-3588.

What is John H. Addison MD Ps's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Does John H. Addison MD Ps hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 50D2157122) is associated with this NPI, valid through April 4, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does John H. Addison MD Ps accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list John H. Addison MD Ps as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John H. Addison MD Ps was last updated on January 5, 2017. NPI Profile syncs with the weekly NPPES data releases published by CMS.