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

Leonard Alan Mankin, MD

Individual provider Internal Medicine Physician · NPI 1710992201

Leonard Alan Mankin, MD practises Internal Medicine in Portland, Oregon. Graduated from Geisel School of Medicine at Dartmouth in 1992, 34 years ago. Practices with Legacy Good Samaritan Hospital and Medical Center, a 192-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oregon.

Years since qualifying
34
Trained at
Geisel School of Medicine at Dartmouth
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

1200 NW 23rd Ave
Portland, OR 97210-2906 Not confirmed with CMS for 19 years — call before visiting
Phone: (503) 494-8562
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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 MD25913 (OR)

Record details

NPI number1710992201
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 31, 2006
Last updated in NPPESJuly 19, 2007

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 1992 (34 years in practice)
Group practice Legacy Good Samaritan Hospital And Medical Center — 192 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 patients266
Services billed 1,020 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 Emanuel Medical Center Hospital · Portland, OR
  • Legacy Meridian Park Medical Center Hospital · Tualatin, OR
  • Ohsu Hospital And Clinics Hospital · Portland, OR
  • Amedisys Home Health Care Home health agency · Portland, OR
  • Assured Home Health Home health agency · Salem, OR

Colleagues at Legacy Good Samaritan Hospital and Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 192 clinicians in the practice; 12 are shown here.

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