GRETE HEMMINGSEN PORTEOUS MD
NPI 1649210295
Anesthesiology in Seattle, WA

Active since June 08, 2006PECOS EnrolledAccepts Medicare Assignment
1100 9TH AVE, SEATTLE, WA 98101(206) 223-6980 Get Directions Write a Review

NPPES record last updated: February 19, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Grete Hemmingsen Porteous Md NPPES

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

GRETE HEMMINGSEN PORTEOUS MD (NPI 1649210295) is an individual anesthesiology provider in Seattle, Washington, licensed in Washington (MD60170125) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with Valley Medical Center, and is a graduate of University Of California, San Francisco School Of Medicine (2000).

NPPES Registry Identity

NPI1649210295
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameGRETE HEMMINGSEN PORTEOUSCredential: MD
Location Address1100 9TH AVESeattle, WA 98101-2756
Mailing Address1100 9th AveSeattle, WA 98101-2756 · (206) 515-5811 · Fax (206) 515-5886
Sole ProprietorNo
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 2000
Enumeration DateJune 8, 2006
Last NPPES UpdateFebruary 19, 2024
NPPES CertifiedFebruary 19, 2024
NPI 1649210295 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses Licensed in WA · MD60170125 Licensed in CA · A76493
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
1100 9TH AVE, Seattle, WA 98101

Other Identifiers 3

Medicaid00A764930CA
Other0275155WA · Dept Of Labor And Industries
Medicaid2011310WA

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

Grete Hemmingsen Porteous 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 ID9133192578
PECOS Enrollment IDI20110324000997
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.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
16 services16 patients

Hospital Affiliations CMS Care Compare

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

Valley Medical Center

Acute Care Hospitals · Renton, WA
2/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number500088
Location400 S 43rd StRenton, WA 98055 · King County
Emergency services Birthing friendly

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.

Occupational Therapist
1100 9TH AVE
SEATTLE, WA 98101
Pharmacist
1100 9TH AVE, MS C3-PO
SEATTLE, WA 98101
Internal Medicine (Critical Care Medicine)
1100 9TH AVE
SEATTLE, WA 98101
Contractor
1100 9TH AVE
SEATTLE, WA 98101
Physical Medicine & Rehabilitation
1100 9TH AVE
SEATTLE, WA 98101
Speech-Language Pathologist
1100 9TH AVE, MS:H4-PMR
SEATTLE, WA 98101
Surgery
1100 9TH AVE
SEATTLE, WA 98101
Internal Medicine (Gastroenterology)
1100 9TH AVE
SEATTLE, WA 98101

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 Grete Porteous's NPI number?

The NPI number for Grete Porteous is 1649210295. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is Grete Porteous located?

Grete Porteous practices at 1100 9th Ave, Seattle, WA 98101. The listed phone number is (206) 223-6980.

What is Grete Porteous's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Grete Porteous enrolled in Medicare?

Yes. Grete Porteous 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 Grete Porteous affiliated with any hospitals?

According to CMS data, Grete Porteous is affiliated with Valley Medical Center.

When was this NPI record last updated?

The NPPES record for Grete Porteous was last updated on February 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.