Leonard Alan Mankin, MD
Internal Medicine Physician · Portland, OR
Leonard Alan Mankin, MD is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1710992201, issued on Jul 31, 2006. Check the license (Oregon MD25913, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Leonard Alan Mankin
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD25913 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1200 NW 23RD Ave, Portland, OR 97210
- Phone
- (503) 494-8562
- Enumerated
- Jul 31, 2006
- Record last updated
- Jul 19, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 023217 OR
- Medicare enrollment
- Enrolled (PECOS I20050817000651); accepts Medicare assignment
- Medical or professional school
- Geisel School Of Medicine At Dartmouth, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 1200 NW 23RD Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Leonard Alan Mankin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD25913Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,010 Medicare Part D claims for 223 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 74 claims were for opioids.
Most prescribed
- Atorvastatin Calcium244 claims
- Amlodipine Besylate96 claims
- Levothyroxine Sodium70 claims
- Lisinopril66 claims
- Eliquis64 claims
- Metformin Hcl63 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Legacy Emanuel Hospital And Health CenterPortland, OR
- Legacy Good Samaritan Hospital And Medical CenterPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leonard Alan Mankin among 2,116 internal medicine physician records in Oregon
Leonard Alan Mankin, MD is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 54% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1992 · median 2008 among the 1,232 with a school on file
- Record last updated2007 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Stephen Baugh, MDPortland, OR 972101972577740
- James Borden, MDPortland, OR 972101679555742
- Patrick Dunn, M.D.Portland, OR 972101669447231
- Barry Egener, MDPortland, OR 972101437124088
- Joyce KaynardPortland, OR 972101720053317
- Curtis Marr, M.D.Portland, OR 972101669447264
- Erich Meihoff, MDPortland, OR 972101144295916
- John Oppenheimer, MDPortland, OR 972101922071513
Common questions
What is Leonard Alan Mankin, MD's NPI number?
Leonard Alan Mankin, MD's National Provider Identifier (NPI) is 1710992201, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Alan Mankin, MD located?
The NPPES record lists a practice address at 1200 NW 23RD Ave, Portland, OR, 97210. Phone: (503) 494-8562. Providers update this record themselves, so call before visiting.
How can I verify Leonard Alan Mankin, MD's license?
NPPES lists Oregon license number MD25913, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leonard Alan Mankin, MD prescribe under Medicare Part D?
In 2024, Leonard Alan Mankin, MD had 2,010 Medicare Part D claims for 223 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.