William A. Alto, MD, MPH
Family Medicine Physician · Seattle, WA
William A. Alto, MD, MPH is a family medicine physician with a practice address in Seattle, Washington, and NPI 1962478073, issued on Feb 28, 2006. Check the license (Washington MD60240474, as entered in NPPES) on the Washington Medical Commission; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William A. Alto
- Credential
- MD, MPH
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- MD60240474 WA
013896 ME
Self-reported in NPPES; status is on the state search - Practice location
- 550 16TH Ave, Seattle, WA 98122
- Phone
- (206) 320-2484
- Enumerated
- Feb 28, 2006
- Record last updated
- Sep 7, 2023
- Fax
- (206) 320-4568
- Medicaid IDs
- 317430099 ME
1962478073 WA - Entity
- Type 1 · individual
Also registered at 550 16TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Abrams, M.D.Family Medicine Physician1497066161
- Mikaela Alger, MDFamily Medicine Physician1013302330
- Letizia Alto, M.D.Family Medicine Physician1871742312
- Emily Ashbaugh, M.D.Family Medicine Physician1013201979
- Isabella BlumStudent in an Organized Health Care Education/Training Program1932959970
- Aileen Cham, M.D.Family Medicine Physician1154519197
Verify William A. Alto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60240474Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
871 family medicine physician records list a practice address in Seattle
They are 871 of the 41,956 NPPES records with a practice address in Seattle, and 5,534 family medicine physician records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 871 in Seattle → All 5,534 in Washington → Every provider in Seattle →
Other family medicine physician records in Washington
- Shawn Aaron, MDLongview, WA1578560710
- John Abano, M.D.Shoreline, WA1891929857
- Sarah Abbot, DOKirkland, WA1033555180
- Arthur Abbott, M.D.Seattle, WA1255488847
- Dale Abbott, MDBurlington, WA1760453534
- Michael Abbott, MDEast Wenatchee, WA1336179928
- Richard Abbott, M.D.Mount Vernon, WA1689835803
- Charlee Abboud, DOTacoma, WA1174152169
- Suad AbdelazizSeattle, WA1306423421
- Joonis Abdulkhader, M.D.Seattle, WA1518154335
Common questions
What is William A. Alto, MD, MPH's NPI number?
William A. Alto, MD, MPH's National Provider Identifier (NPI) is 1962478073, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William A. Alto, MD, MPH located?
The NPPES record lists a practice address at 550 16TH Ave, Seattle, WA, 98122. Phone: (206) 320-2484. Providers update this record themselves, so call before visiting.
How can I verify William A. Alto, MD, MPH's license?
NPPES lists Washington license number MD60240474, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.