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

Mrs. Gwen Johanna Grewe, MD

Individual provider Internal Medicine Physician · NPI 1326014234

Mrs. Gwen Johanna Grewe, MD practises Internal Medicine in Tualatin, Oregon. Qualified in 1997, 29 years ago. Practices with Legacy Meridian Park Hospital, a 110-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oregon.

Years since qualifying
29
Licensed in
OR
In the registry since
2006
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

19875 SW 65th Ave
Tualatin, OR 97062-8353 Not confirmed with CMS for 15 years — call before visiting
Phone: (503) 692-7785
Fax: (503) 885-1663
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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 MD21373 (OR)

Record details

NPI number1326014234
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 28, 2006
Last updated in NPPESFebruary 18, 2011

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1997 (29 years in practice)
Group practice Legacy Meridian Park Hospital — 110 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 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 patients60
Services billed 200 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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. Those with a page here are linked.

  • Legacy Good Samaritan Medical Center Hospital · Portland, OR · listed as Legacy Good Samaritan Hospital and Medical Center
  • Legacy Meridian Park Medical Center Hospital · Tualatin, OR

Colleagues at Legacy Meridian Park Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 110 clinicians in the practice; 12 are shown here.

Other providers in Tualatin