DR. WILLIAM B GUNDERSON IV MD
NPI 1205151990
Internal Medicine in Friday Harbor, WA

Q: What is William Gunderson's NPI number?

The NPI number for William Gunderson is 1205151990. It was assigned to this individual provider in the NPPES registry on April 6, 2010.

Q: What is William Gunderson's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for William Gunderson was last updated on July 30, 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.

Active since April 06, 2010PECOS EnrolledAccepts Medicare Assignment

1117 SPRING ST, FRIDAY HARBOR, WA 98250(360) 378-2141(360) 378-1785 Get Directions Write a Review

NPPES record last updated: July 30, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 30, 2024, Sep 29, 2021 (2 updates tracked since 2021).

On this page

About Dr. William B Gunderson Iv Md NPPES

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

DR. WILLIAM B GUNDERSON IV MD (NPI 1205151990) is an individual internal medicine provider in Friday Harbor, Washington, licensed in Washington (MD60476325) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, is affiliated with Island Hospital, and is a graduate of Tulane University School Of Medicine (2010).

NPPES Registry Identity

NPI1205151990

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. WILLIAM B GUNDERSON IVCredential: MD

Location Address1117 SPRING STFriday Harbor, WA 98250-9782

Mailing Address220 Nw 49th StSeattle, WA 98107-3417 · (503) 791-2709

Phone(360) 378-2141

Fax(360) 378-1785

Sole ProprietorNo

Medical School CMSTulane University School Of MedicineGraduated 2010

Enumeration DateApril 6, 2010

Last NPPES UpdateJuly 30, 20242 updates tracked since enumeration

NPPES CertifiedJuly 30, 2024

✔ NPI 1205151990 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in WA · MD60476325

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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1117 SPRING ST, Friday Harbor, WA 98250

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

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

Dr. William B Gunderson Iv 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 ID3678719937

PECOS Enrollment IDI20140910002173

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 4

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

Island Hospital

Acute Care Hospitals · Anacortes, WA

5/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number500007

Location1211 24th StreetAnacortes, WA 98221 · Skagit County

Emergency services Birthing friendly

St Joseph Hospital

Acute Care Hospitals · Bellingham, WA

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number500030

Location2901 Squalicum ParkwayBellingham, WA 98225 · Whatcom County

Emergency services Birthing friendly

Peacehealth United General Medical Center

Critical Access Hospitals · Sedro Woolley, WA

3/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number501329

Location2000 Hospital DriveSedro Woolley, WA 98284 · Skagit County

Emergency services

Peacehealth Peace Island Medical Center

Critical Access Hospitals · Friday Harbor, WA

OwnershipVoluntary non-profit - Private

CMS Certification Number501340

Location1117 Spring StreetFriday Harbor, WA 98250 · San Juan County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98250 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

$100.78 typical visit price

range $18.56 – $141.11

Typical copayment $25.19 (range $4.64 – $35.27)

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.

Referred Medical Equipment & Supplies CMS DME claims 8

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

3 suppliers20 claims65 services$5.87 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier51 claims51 services$19.39 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

3 suppliers93 claims93 services$110.63 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

2 suppliers22 claims24 services$36.61 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

3 suppliers18 claims1,680 services$0.07 avg. paid by Medicare

Budesonide, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, up to 0.5 mg J7626

DME-Drugs Administered Through DME · category DG000N

1 supplier13 claims780 services$0.75 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 18

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

RACHEL A. BISHOP M.D.

Family Medicine