What is William Gunderson's specialty?

William Gunderson (NPI 1205151990) is a Medicare-billing provider whose primary specialty is Internal Medicine in Friday Harbor, WA.

Where does William Gunderson practice?

William Gunderson practices in Friday Harbor, WA, based on the location reported in the CMS Medicare provider datasets for NPI 1205151990.

How much does Medicare pay William Gunderson?

William Gunderson (NPI 1205151990) received approximately $3K in total Medicare Part B payments, serving 14 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1205151990

William GundersonMD

PRACTICEPEACEHEALTH PEACE ISLAND MEDICAL CENTERSee all providers at this practice →

Internal MedicineFriday Harbor, WAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

6,362

Beneficiaries

—

Total drug cost

$615K

Distinct drugs

102

Brand share

18.2%

Top prescribed drugs

Atorvastatin Calcium620 claims

Lisinopril376 claims

Tamsulosin Hcl272 claims

Omeprazole241 claims

Amlodipine Besylate221 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$14

Payment records

By payment type

Food and Beverage$14

Top paying entities

Food and Beverage$14

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (6)

Home health agency

Hospice

Hospital

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where William Gunderson's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 16 inbound referrers · 30 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PEACEHEALTH PEACE ISLAND MEDICAL CENTER	255	1,738
PEACEHEALTH	41	141
Northwest Pathology Pllc Clinical Laboratory · Bellingham, WA	30	55
Peter Buetow Diagnostic Radiology · Bellingham, WA	28	64
Susan Mahoney Family Practice · Friday Harbor, WA	25	76
Gita Rabbani Diagnostic Radiology · Bellingham, WA	23	89
Kevin Bowman Emergency Medicine · Mount Vernon, WA	22	55
Michael Smith Diagnostic Radiology · Bellingham, WA	21	54
Matthew Studley Diagnostic Radiology · Bellingham, WA	21	55
PUBLIC HOSPITAL DIST NO 1 SKAGIT	15	40
CASCADE MEDICAL INVESTORS LIMITED PARTNERSHIP	12	55
Rachel Bishop Family Practice · Friday Harbor, WA	12	27

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
PEACEHEALTH PEACE ISLAND MEDICAL CENTER	384	2,839
PEACEHEALTH	31	102
PUBLIC HOSPITAL DISTRICT NO 2 SKAGIT COUNTY WASHINGTON	28	77
Cheryl Kubisty Hospitalist · Oak Harbor, WA	26	78
Charles Ariz Diagnostic Radiology · Bellingham, WA	26	55
San Juan Island Emergency Medical Service Ambulance Service Provider · Friday Harbor, WA	23	81
Gita Rabbani Diagnostic Radiology · Bellingham, WA	23	85
Northwest Pathology Pllc Clinical Laboratory · Bellingham, WA	21	56
Michael Smith Diagnostic Radiology · Bellingham, WA	20	40
CARPENTER, KENNETH	19	44
Laura Backer Diagnostic Radiology · Bellingham, WA	18	34
Susan Mahoney Family Practice · Friday Harbor, WA	18	48

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events