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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

PATRICK HENNESSEY ERSTAD MD
NPI 1255034732
Internal Medicine in Seattle, WA

Active since March 23, 2023PECOS EnrolledAccepts Medicare Assignment
925 SENECA ST, SEATTLE, WA 98101(206) 583-6078 Get Directions Write a Review

NPPES record last updated: August 27, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Aug 27, 2026, Mar 23, 2023 (2 updates tracked since 2023).

About Patrick Hennessey Erstad Md NPPES

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

PATRICK HENNESSEY ERSTAD MD (NPI 1255034732) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD.MD.70070534) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS, is affiliated with Virginia Mason Medical Center, and is a graduate of University Of Washington School Of Medicine (2023).

NPPES Registry Identity

NPI1255034732
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NamePATRICK HENNESSEY ERSTADCredential: MD
Location Address925 SENECA STSeattle, WA 98101-2742
Mailing Address925 Seneca StSeattle, WA 98101-2742 · (206) 583-6078
Phone(206) 583-6078
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 2023
Enumeration DateMarch 23, 2023
Last NPPES UpdateAugust 27, 20262 updates tracked since enumeration
NPPES CertifiedAugust 27, 2026
✔ NPI 1255034732 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WA · MD.MD.70070534
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.
925 SENECA ST, Seattle, WA 98101
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Patrick Hennessey Erstad Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID941665616
PECOS Enrollment IDI20260716000811
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Virginia Mason Medical Center

Acute Care Hospitals · Seattle, WA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number500005
Location925 Seneca StSeattle, WA 98101 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

STEPHEN A LOPEZ MD
Hospitalist
925 SENECA ST
SEATTLE, WA 98101
King County (206) 341-0860
DR. STEPHEN RAMON MD
Student in an Organized Health Care Education/Training Program
925 SENECA ST
SEATTLE, WA 98101
King County (206) 583-6079
JARED JOHN BASSMANN
Student in an Organized Health Care Education/Training Program
925 SENECA ST
SEATTLE, WA 98101
King County (206) 223-6772
YORDANOS T KAHSAI M.D.
Hospitalist
925 SENECA ST
SEATTLE, WA 98101
King County (206) 624-1144
RHADIKA MCCORMICK SOUZA MD
Emergency Medicine
925 SENECA ST
SEATTLE, WA 98101
King County (206) 583-6433
IRINA KUSHNIR M.D.
Hospitalist
925 SENECA ST
SEATTLE, WA 98101
King County (206) 341-1401
JENNA LEE MALIGRO MD
Student in an Organized Health Care Education/Training Program
925 SENECA ST, MAIL STOP: H8-GME
SEATTLE, WA 98101
King County (206) 583-6079
THOMAS HOY PEREZ
Student in an Organized Health Care Education/Training Program
925 SENECA ST
SEATTLE, WA 98101
King County (408) 832-4749

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 Patrick Erstad's NPI number?

The NPI number for Patrick Erstad is 1255034732. It was assigned to this individual provider in the NPPES registry on March 23, 2023.

Where is Patrick Erstad located?

Patrick Erstad practices at 925 Seneca St, Seattle, WA 98101. The listed phone number is (206) 583-6078.

What is Patrick Erstad's specialty?

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

Is Patrick Erstad enrolled in Medicare?

Yes. Patrick Erstad is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Patrick Erstad affiliated with any hospitals?

According to CMS data, Patrick Erstad is affiliated with Virginia Mason Medical Center.

When was this NPI record last updated?

The NPPES record for Patrick Erstad was last updated on August 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days 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.