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DR. WILLIAM ORLANDO HAHN M.D.
NPI 1164650347
Internal Medicine - Infectious Disease in Seattle, WA

Active since June 26, 2009PECOS EnrolledAccepts Medicare Assignment
325 9TH AVE, SEATTLE, WA 98104(206) 520-5000 Get Directions Write a Review

NPPES record last updated: November 1, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 1, 2021, Nov 11, 2020, Mar 11, 2019 and 1 more (4 updates tracked since 2015).

About Dr. William Orlando Hahn M.d. NPPES

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

DR. WILLIAM ORLANDO HAHN M.D. (NPI 1164650347) is an individual infectious disease provider in Seattle, Washington, licensed in Washington (MD60332434) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, is affiliated with University Of Washington Medical Ctr, and is a graduate of Other (2009).

NPPES Registry Identity

NPI1164650347
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. WILLIAM ORLANDO HAHNCredential: M.D.
Location Address325 9TH AVESeattle, WA 98104-2420
Mailing AddressPo Box 50095Seattle, WA 98145-5095
Phone(206) 520-5000
Sole ProprietorNo
Medical School CMSOtherGraduated 2009
Enumeration DateJune 26, 2009
Last NPPES UpdateNovember 1, 20214 updates tracked since enumeration
NPPES CertifiedNovember 1, 2021
✔ NPI 1164650347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in WA · MD60332434
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD60332434 (WA)
325 9TH AVE, Seattle, WA 98104
Open in Google Maps ↗

Other Identifiers 1

Medicaid1164650347WA

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 Orlando Hahn M.d. 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 ID1355562521
PECOS Enrollment IDI20141103000225
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 2

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

University Of Washington Medical Ctr

Acute Care Hospitals · Seattle, WA
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number500008
Location1959 NE Pacific St Box 356151Seattle, WA 98195 · King County
Emergency services Birthing friendly

Harborview Medical Center

Acute Care Hospitals · Seattle, WA
1/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number500064
Location325 9th AvenueSeattle, WA 98104 · King County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98104 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.

SANDRA K WALKER ARNP
Nurse Practitioner (Acute Care)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 598-0502
JULIA J VISSER DPT
Physical Therapist
325 9TH AVE, BOX 359920
SEATTLE, WA 98104
King County (206) 744-1675
GENIA J MONCADA
Pharmacist
325 9TH AVE, MAILSTOP 359912
SEATTLE, WA 98104
King County (206) 731-3219
JACQUELINE M. KIM LICSW, MSW
Social Worker (Clinical)
325 9TH AVE, BOX 359760
SEATTLE, WA 98104
King County (206) 744-8511
MS. DIANE E WHEELER MS, PA-C
Physician Assistant (Medical)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 744-3000
AMELIA V. RIVERA
Physical Therapist
325 9TH AVE
SEATTLE, WA 98104
King County (206) 774-3300
TIMOTHY WILLIAM MENZA MD, PHD
Internal Medicine (Infectious Disease)
325 9TH AVE
SEATTLE, WA 98104
King County (206) 520-5000
DEMETRIOS TEREZAKIS
Occupational Therapist
325 9TH AVE
SEATTLE, WA 98104
King County (206) 744-6112

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 William Hahn's NPI number?

The NPI number for William Hahn is 1164650347. It was assigned to this individual provider in the NPPES registry on June 26, 2009.

Where is William Hahn located?

William Hahn practices at 325 9th Ave, Seattle, WA 98104. The listed phone number is (206) 520-5000.

What is William Hahn's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is William Hahn enrolled in Medicare?

Yes. William Hahn 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.

What insurance does William Hahn accept?

Health plans from PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list William Hahn 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 William Hahn affiliated with any hospitals?

According to CMS data, William Hahn is affiliated with University Of Washington Medical Ctr and Harborview Medical Center.

When was this NPI record last updated?

The NPPES record for William Hahn was last updated on November 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.