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

Mark W Beiter, DO

Individual provider Internal Medicine Physician · NPI 1740323740

Mark W Beiter, DO is registered under Hospice/Palliative Care in Seattle, Washington. Graduated from Arizona College of Osteopathic Medicine Mid Western University in 2005, 21 years ago. Practices with Virginia Mason Medical Center, a 867-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
21
Trained at
Arizona College of Osteopathic Medicine Mid Western University
Licensed in
WA
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

925 Seneca St
Seattle, WA 98101-2742 Not confirmed with CMS for 13 years — call before visiting
Phone: (206) 583-6079
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence OP00002299 (WA)

Record details

NPI number1740323740
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 15, 2007
Last updated in NPPESJuly 1, 2013

Medicare enrollment

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

Medicare specialtyHOSPICE/PALLIATIVE CARE
Also practisesINTERNAL MEDICINE
Medical schoolARIZONA COLLEGE OF OSTEOPATHIC MEDICINE MID WESTERN UNIVERSITY
Graduated 2005 (21 years in practice)
Group practice Virginia Mason Medical Center — 867 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients102
Services billed 333 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Virginia Mason Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 867 clinicians in the practice; 12 are shown here.

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