NORTHWEST OBSERVATION ASSOCIATES PC
NPI 1023539376
Internal Medicine in Federal Way, WA

Q: What is Northwest Observation Associates PC's NPI number?

The NPI number for Northwest Observation Associates PC is 1023539376. It was assigned to this organization in the NPPES registry on June 27, 2017.

Q: What is Northwest Observation Associates PC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since June 27, 2017

34515 9TH AVE S, FEDERAL WAY, WA 98003(865) 693-1000 Get Directions Write a Review

NPPES record last updated: January 10, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 10, 2020, Jun 27, 2017 (2 updates tracked since 2017).

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About Northwest Observation Associates Pc NPPES

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

NORTHWEST OBSERVATION ASSOCIATES PC (NPI 1023539376) is a healthcare organization registered as an internal medicine in Federal Way, Washington and active in the NPI registry since June 2017. The organization lists Sharon Hardy, Director Provider Enrollment, as its authorized official.

NPPES Registry Identity

NPI1023539376

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameNORTHWEST OBSERVATION ASSOCIATES PC

Location Address34515 9TH AVE SFederal Way, WA 98003-6761

Mailing Address265 Brookview Centre Way Ste 400Knoxville, TN 37919-4052 · (865) 693-1000

Phone(865) 693-1000

Organization SubpartNo

Authorized OfficialSharon HardyDirector Provider Enrollment · (925) 251-6901

Enumeration DateJune 27, 2017

Last NPPES UpdateJanuary 10, 20202 updates tracked since enumeration

✔ NPI 1023539376 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedHospitalistTaxonomy 208M00000X

34515 9TH AVE S, Federal Way, WA 98003

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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

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Northwest Observation Associates Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

189

Medicare enrollment records show 189 clinicians reassign Medicare billing to Northwest Observation Associates PC, which bills Medicare for the services they deliver. Of these, 9 practice at this address and 35 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Emergency Medicine184

Nurse Practitioner3

Critical Care (Intensivists)1

Osteopathic Manipulative Medicine1

Nearest to this location (20)

See all 189

Courtney Francisco, MD

Emergency Medicine

NPI 1407241169

34515 9TH AVE S
Federal Way, WA 98003

(415) 407-3360

✔ PECOS✔ Accepts MedicareSame address

Jeffrey Cortazzo, MD

Emergency Medicine

NPI 1912948381

34515 9TH AVE S SUITE 600
Federal Way, WA 98003

(253) 952-7971

✔ PECOSSame address

Erik Gerdes, MD

Emergency Medicine

NPI 1346281045

34515 9TH AVE S
Federal Way, WA 98003

(253) 838-9700

✔ PECOSSame address

Andrea Drenguis, DO

Emergency Medicine

NPI 1205128121

34515 9TH AVE S
Federal Way, WA 98003

(253) 838-9700

✔ PECOSSame address

Taylor Jordan, MD

Emergency Medicine

NPI 1316683543

34515 9TH AVE S
Federal Way, WA 98003

(253) 733-3969

✔ PECOS✔ Accepts MedicareSame address

Alexander Mckitrick, DO

Emergency Medicine

NPI 1588286819

34515 9TH AVE S
Federal Way, WA 98003

(253) 733-3969

✔ PECOS✔ Accepts MedicareSame address

Evan Small, MD PHD

Emergency Medicine

NPI 1316202476

34515 9TH AVE S
Federal Way, WA 98003

(253) 838-9700

✔ PECOS✔ Accepts MedicareSame address

Trevor Takami, MD

Emergency Medicine

NPI 1043899479

34515 9TH AVE S
Federal Way, WA 98003

(253) 944-8100

✔ PECOS✔ Accepts MedicareSame address

Lysa Ward, MD

Emergency Medicine

NPI 1023053857

34515 9TH AVE S
Federal Way, WA 98003

(253) 838-9700

✔ PECOS✔ Accepts MedicareSame address

Melody Denson, DO

Emergency Medicine

NPI 1619924206

505 S 336TH STREET SUITE 600 NORTHWEST EMERGENCY PHYSICIANS OF TEAM HEALTH
Federal Way, WA 98003

(800) 336-8614

✔ PECOS✔ Accepts Medicare0.5 mi

Yasmeen Ansari, MD

Emergency Medicine

NPI 1922254978

505 S 336TH ST #600
Federal Way, WA 98003

(253) 838-6180

✔ PECOS✔ Accepts Medicare0.5 mi

Kara Purdy, M.D.

Emergency Medicine

NPI 1023401338

202 N DIVISION ST
Auburn, WA 98001

(253) 833-7711

✔ PECOS✔ Accepts Medicare4.7 mi

Bryant Bullock, DO

Emergency Medicine

NPI 1730572652

202 N DIVISION ST
Auburn, WA 98001

(253) 833-7711

✔ PECOS✔ Accepts Medicare4.8 mi

Lisa Nguyen, MD

Emergency Medicine

NPI 1174766919

209 MARTIN LUTHER KING JR WAY
Tacoma, WA 98405

(253) 596-3300

✔ PECOS✔ Accepts Medicare6.3 mi

Nicholas Hernandez

Emergency Medicine

NPI 1811377476

209 MARTIN LUTHER KING JR WAY
Tacoma, WA 98405

(253) 596-3300

✔ PECOS✔ Accepts Medicare6.3 mi

Seth Holt, MD

Emergency Medicine

NPI 1992071203

209 MARTIN LUTHER KING JR WAY
Tacoma, WA 98405

(253) 596-3300

✔ PECOS✔ Accepts Medicare6.3 mi

Winston Tavee, M.D

Emergency Medicine

NPI 1225277072

209 MARTIN LUTHER KING JR WAY
Tacoma, WA 98405

(253) 596-3300

✔ PECOS✔ Accepts Medicare6.3 mi

Sydney Hindley, MD

Emergency Medicine

NPI 1649617358

209 MARTIN LUTHER KING JR WAY
Tacoma, WA 98405

(253) 596-3300

✔ PECOS✔ Accepts Medicare6.3 mi

Jennifer Hissett, M.D.

Emergency Medicine

NPI 1699040824

209 MARTIN LUTHER KING JR WAY
Tacoma, WA 98405

(253) 596-3300

✔ PECOS✔ Accepts Medicare6.3 mi

Christopher Staley, D.O.

Emergency Medicine

NPI 1821282138

209 MARTIN LUTHER KING JR WAY
Tacoma, WA 98405

(253) 596-3300

✔ PECOS✔ Accepts Medicare6.3 mi

See all 189 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Northwest Observation Associates PC's NPI number?

The NPI number for Northwest Observation Associates PC is 1023539376. It was assigned to this organization in the NPPES registry on June 27, 2017.

Where is Northwest Observation Associates PC located?

Northwest Observation Associates PC is located at 34515 9th Ave S, Federal Way, WA 98003. The listed phone number is (865) 693-1000.

What is Northwest Observation Associates PC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Northwest Observation Associates PC enrolled in Medicare?

Yes. Northwest Observation Associates PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Northwest Observation Associates PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 189 clinicians in 4 Medicare specialties reassign their Medicare billing to Northwest Observation Associates PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Emergency Medicine (184), Nurse Practitioner (3) and Critical Care (Intensivists) (1). Of these, 9 practice at this address and 35 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Northwest Observation Associates PC was last updated on January 10, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.