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WILLIAM A ALTO MD, MPH
NPI 1962478073
Family Medicine in Seattle, WA

Active since February 28, 2006PECOS Enrolled
550 16TH AVE, STE 100, SEATTLE, WA 98122(206) 320-2484(206) 320-4568 Get Directions Write a Review

NPPES record last updated: September 7, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About William A Alto Md, Mph NPPES

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

WILLIAM A ALTO MD, MPH (NPI 1962478073) is an individual family medicine provider in Seattle, Washington, licensed in Washington (MD60240474) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1962478073
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameWILLIAM A ALTOCredential: MD, MPH
Location Address550 16TH AVE, STE 100Seattle, WA 98122-5699
Mailing AddressPo Box 25608Salt Lake City, UT 84125-0608 · (206) 320-4476 · Fax (206) 568-7043
Phone(206) 320-2484
Fax(206) 320-4568
Sole ProprietorNo
Enumeration DateFebruary 28, 2006
Last NPPES UpdateSeptember 7, 2023
✔ NPI 1962478073 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in WA · MD60240474✔ Licensed in ME · 013896
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
550 16TH AVE, Seattle, WA 98122
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Other Identifiers 2

Medicaid317430099ME
Medicaid1962478073WA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William A Alto Md, Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98122 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
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
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.

DR. RICHARD CRAIG GRIFFITHS M.D.
Anesthesiology
550 16TH AVE, SUITE 404
SEATTLE, WA 98122
King County (206) 329-0585
EMILY BROWN ASHBAUGH M.D.
Family Medicine
550 16TH AVE, SUITE 400
SEATTLE, WA 98122
King County (206) 320-2484
MIKAELA ALGER MD
Family Medicine
550 16TH AVE, #100
SEATTLE, WA 98122
King County (306) 324-8484
LABORATORY CORPORATION OF AMERICA
Clinical Medical Laboratory
550 16TH AVE, SUTIE 100A
SEATTLE, WA 98122
King County (206) 320-2238
DYNACARE NORTHWEST INC
Clinical Medical Laboratory
550 16TH AVE, STE 100
SEATTLE, WA 98122
King County (206) 320-2238
SWEDISH HEALTH SERVICES
General Acute Care Hospital
550 16TH AVE, SUITE 400
SEATTLE, WA 98122
King County (206) 320-2484
DR. GREGORY MADDOX M.D.
Family Medicine
550 16TH AVE, SUITE 400
SEATTLE, WA 98122
King County (206) 324-8484
DR. THUY DAN THI DO MD
Family Medicine
550 16TH AVE, STE 100
SEATTLE, WA 98122
King County (206) 320-2233

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 Alto's NPI number?

The NPI number for William Alto is 1962478073. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Where is William Alto located?

William Alto practices at 550 16th Ave Ste 100, Seattle, WA 98122. The listed phone number is (206) 320-2484.

What is William Alto's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is William Alto enrolled in Medicare?

Yes. William Alto is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Alto was last updated on September 7, 2023. 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.