Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark R Tonelli

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1649360504

Mark R Tonelli is registered under Pulmonary Disease in Seattle, Washington. Graduated from University of Colorado School of Medicine, Denver in 1989, 37 years ago. Practices with The Association of University Physicians, a 3,459-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
37
Trained at
University of Colorado School of Medicine, Denver
Licensed in
WA
In the registry since
2006
Specialties on file
2
Claim this listing Report a problem Suggest an edit

Practice location Partly verified

Some contact details are missing from the federal record.

University Of Washington Medical Ctr 1959 NE Pacific St
Seattle, WA 98195-6166 Not confirmed with CMS for 14 years — call before visiting
Phone: (206) 598-4615
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence MD00030937 (WA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence MD00030937 (WA)

Record details

NPI number1649360504
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedOctober 13, 2006
Last updated in NPPESJanuary 21, 2012

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE
Medical schoolUNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduated 1989 (37 years in practice)
Group practice The Association Of University Physicians — 3459 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients186
Services billed 349 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at The Association of University Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3459 clinicians in the practice; 12 are shown here.

Other providers in Seattle