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SARA F. SIWANOWICZ CRNA
NPI 1760447908
Nurse Anesthetist, Certified Registered in Vancouver, WA

Active since April 19, 2006Accepts Medicare Assignment
400 NE MOTHER JOSEPH PL, VANCOUVER, WA 98664(360) 828-5396(360) 828-5455 Get Directions Write a Review

NPPES record last updated: March 8, 2017. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Sara F. Siwanowicz Crna NPPES

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

SARA F. SIWANOWICZ CRNA (NPI 1760447908) is an individual nurse anesthetist, certified registered in Vancouver, Washington, licensed in Washington (AP30007036) and active in the NPI registry since April 2006. She is affiliated with Legacy Good Samaritan Medical Center and is a graduate of Other (2005).

NPPES Registry Identity

NPI1760447908
Entity TypeIndividualFemale
Primary Taxonomy367500000X
Provider Legal NameSARA F. SIWANOWICZCredential: CRNA
Location Address400 NE MOTHER JOSEPH PLVancouver, WA 98664-3200
Mailing AddressPo Box 5157Vancouver, WA 98668-5157 · (360) 687-5221
Phone(360) 828-5396
Fax(360) 828-5455
Sole ProprietorYes
Medical School CMSOtherGraduated 2005
Enumeration DateApril 19, 2006
Last NPPES UpdateMarch 8, 2017
✔ NPI 1760447908 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License✔ Licensed in WA · AP30007036
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
Also ListedRegistered NurseTaxonomy 163W00000X · License RN00158602 (WA)
400 NE MOTHER JOSEPH PL, Vancouver, WA 98664
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Other Identifiers 4

Other8940597WA · L&i Crime Victims
Other0204066WA · Labor & Industry
Medicaid9646258WA
Medicare UPINQ66857WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Sara F. Siwanowicz Crna 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 ID5294743100
PECOS Enrollment IDI20060403000707, I20080515000666

Medicare Billing Reassignments

6

Medicare enrollment records show Sara Siwanowicz reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Columbia Anesthesia Group P S
Same address
Anesthesiology
400 NE MOTHER JOSEPH PL
Vancouver, WA 98664
  • Reassigned Medicare billing, Oregon and Washington enrollments
  • 108 clinicians in this Medicare group
NPI 1861448235 (360) 828-5396
Hospitalist Medicine Physicians Of Washington - Tcs
6.8 mi
Anesthesiology
4805 NE GLISAN ST
Portland, OR 97213
  • Reassigned Medicare billing, Oregon enrollment
  • 419 clinicians in this Medicare group
NPI 1649816380 (503) 215-1111
Oregon Anesthesiology Group PC
8.6 mi
Anesthesiology
707 SW WASHINGTON ST, SUITE 700
Portland, OR 97205
  • Reassigned Medicare billing, Oregon enrollment
  • 271 clinicians in this Medicare group
NPI 1477527786 (503) 299-9906
Anesthesia Associates Northwest LLC
12 mi
Anesthesiology
10150 SE 32ND AVE
Milwaukie, OR 97222
  • Reassigned Medicare billing, Oregon enrollment
  • 183 clinicians in this Medicare group
NPI 1548281751 (503) 513-8300
Tuality Anesthesia Services, LLC
21 mi
Anesthesiology
335 SE 8TH AVE
Hillsboro, OR 97123
  • Reassigned Medicare billing, Oregon enrollment
  • 48 clinicians in this Medicare group
NPI 1508174012 (503) 681-1690
Anesthetic Solutions, Inc
229 mi
Nurse Anesthetist, Certified Registered
1333 E BARNETT RD
Medford, OR 97504
  • Reassigned Medicare billing, Oregon enrollment
  • 64 clinicians in this Medicare group
NPI 1477022259 (541) 858-4000

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

Hospital Affiliations CMS Care Compare 2

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

Legacy Good Samaritan Medical Center

Acute Care Hospitals · Portland, OR
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380017
Location1015 NW 22nd Avenue, W121Portland, OR 97210 · Multnomah County
Emergency services Birthing friendly

Providence Portland Medical Center

Acute Care Hospitals · Portland, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380061
Location4805 NE Glisan StreetPortland, OR 97213 · Multnomah County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98664 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
$130.99 typical visit price
range $57.27 – $172.80
Typical copayment $32.74 (range $14.31 – $43.20)
Most-billed visit code 99204
Established Patient
$71.29 typical visit price
range $18.56 – $141.11
Typical copayment $17.82 (range $4.64 – $35.27)
Most-billed visit code 99213
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.

DR. TYLER JUSTIN PARADIS MD
Anesthesiology
400 NE MOTHER JOSEPH PL
VANCOUVER, WA 98664
Clark County (360) 828-5396
MACKENZIE RHOADES APRN-CNP, PMHNP-BC
Clinical Nurse Specialist (Psychiatric/Mental Health)
400 NE MOTHER JOSEPH PL
VANCOUVER, WA 98664
Clark County (360) 256-2000
ALBERT MATTHEW DICKAN
Psychiatry & Neurology (Psychiatry)
400 NE MOTHER JOSEPH PL
VANCOUVER, WA 98664
Clark County (360) 514-3191
BRADDEN JENSEN MD
Pathology (Anatomic Pathology & Clinical Pathology)
400 NE MOTHER JOSEPH PL
VANCOUVER, WA 98664
Clark County (360) 514-2116
DR. RAMON LARIOS MD
Anesthesiology
400 NE MOTHER JOSEPH PL
VANCOUVER, WA 98664
Clark County (360) 828-5396
WESLEY HANSON PHARMD
Pharmacist
400 NE MOTHER JOSEPH PL
VANCOUVER, WA 98664
Clark County (360) 514-2881
HENRY NGUYEN PHARMD
Pharmacist
400 NE MOTHER JOSEPH PL
VANCOUVER, WA 98664
Clark County (360) 514-2000
DR. GREGORY A CONNELL M.D.
Anesthesiology
400 NE MOTHER JOSEPH PL
VANCOUVER, WA 98664
Clark County (360) 667-3056

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 Sara Siwanowicz's NPI number?

The NPI number for Sara Siwanowicz is 1760447908. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Where is Sara Siwanowicz located?

Sara Siwanowicz practices at 400 NE Mother Joseph Pl, Vancouver, WA 98664. The listed phone number is (360) 828-5396.

What is Sara Siwanowicz's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Sara Siwanowicz enrolled in Medicare?

Yes. Sara Siwanowicz 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.

Which organizations bill Medicare for Sara Siwanowicz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sara Siwanowicz reassigns Medicare benefits to 6 organizations: Columbia Anesthesia Group P S (Vancouver, WA), Hospitalist Medicine Physicians Of Washington - Tcs (Portland, OR), Oregon Anesthesiology Group PC (Portland, OR), Anesthesia Associates Northwest LLC (Milwaukie, OR), Tuality Anesthesia Services, LLC (Hillsboro, OR) and 1 more organization, listed in the Medicare section above. Each 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 Sara Siwanowicz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sara Siwanowicz accept?

Health plans from Moda Health Plan, Inc. list Sara Siwanowicz 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.

Is Sara Siwanowicz affiliated with any hospitals?

According to CMS data, Sara Siwanowicz is affiliated with Legacy Good Samaritan Medical Center and Providence Portland Medical Center.

When was this NPI record last updated?

The NPPES record for Sara Siwanowicz was last updated on March 8, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.