Alfonso Francisco Siu, MD
Critical Care Medicine (Internal Medicine) Physician · Everett, WA
Alfonso Francisco Siu, MD is a critical care medicine (internal medicine) physician with a practice address in Everett, Washington, and NPI 1619505492, issued on Mar 29, 2020. Check the license (Washington MD.MD.70106458, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Alfonso Francisco Siu
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- MD.MD.70106458 WA
75236 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1700 13TH St, Everett, WA 98201
- Phone
- (404) 740-4807
- Enumerated
- Mar 29, 2020
- Record last updated
- Apr 24, 2026
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 133 in Washington → Look up another NPI →
Also registered at 1700 13TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sojung Ahn, PHARMDPharmacist1003632993
- Amy Anderson, ARNPEmergency Medical Services (Emergency Medicine) Physician1982458030
- Lisa Azzara, CRNACertified Registered Nurse Anesthetist1770107799
Verify Alfonso Francisco Siu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD.MD.70106458Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
50 Medicare Part D claims for 20 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $33.34
1 payment: food and beverage; the largest payer was Melinta Therapeutics, LLC. The 2,708 providers of this specialty with any payment received $2,958.68 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Alfonso Francisco Siu among 133 critical care medicine (internal medicine) physician records in Washington
Alfonso Francisco Siu, MD is one of 133 critical care medicine (internal medicine) physician records with a practice address in Washington. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 95% of them.
- NPI issued2020 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 78% of these records are
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Washington
There are 133 critical care medicine (internal medicine) physician records in Washington.
All 133 in Washington → Every provider in Everett → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Jane Lewis, M.D.Everett, WA 982011740464007
- Claude Zeifman, MD FCCPEverett, WA 982011962423004
- Mai Colvin, M.D.Seattle, WA 981951588926547
- John Goodman, MDSeattle, WA 981951376172197
- Supaksh Gupta, MDSeattle, WA 981951578974226
- Daniel Hoesterey, MDSeattle, WA 981951043741721
- Sarah Holton, MDSeattle, WA 981951053774380
- Laura Hooper, M.D., M.P.HSeattle, WA 981951962727297
Common questions
What is Alfonso Francisco Siu, MD's NPI number?
Alfonso Francisco Siu, MD's National Provider Identifier (NPI) is 1619505492, issued on Mar 29, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Alfonso Francisco Siu, MD located?
The NPPES record lists a practice address at 1700 13TH St, Everett, WA, 98201. Phone: (404) 740-4807. Providers update this record themselves, so call before visiting.
How can I verify Alfonso Francisco Siu, MD's license?
NPPES lists Washington license number MD.MD.70106458, 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.
How much does Alfonso Francisco Siu, MD prescribe under Medicare Part D?
In 2024, Alfonso Francisco Siu, MD had 50 Medicare Part D claims for 20 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.