Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Allen L. Johnson, MD

Individual provider Hospitalist Physician · NPI 1528035565

Allen L. Johnson, MD is a Hospitalist in Sedro Woolley, Washington. Graduated from University of Wisconsin School of Medicine in 1992, 34 years ago. Practices with Post Acute Medical PLLC, a 401-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
34
Trained at
University of Wisconsin School of Medicine
Licensed in
WA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1990 Hospital Dr Ste 200
Sedro Woolley, WA 98284-9315
Phone: (360) 856-4222
Fax: (360) 854-2792
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD00031995 (WA)
Hospitalist Physician Taxonomy 208M00000X · Licence MD00031995 (WA)

Record details

NPI number1528035565
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 8, 2006
Last updated in NPPESJuly 14, 2015
Mailing address1400 E Kincaid St, Attn: Credentialing, Mount Vernon, WA 98274-4127

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice Post Acute Medical Pllc — 401 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Other providers in Sedro Woolley