Ingmar Klaseen Prokop, M.D.
Internal Medicine Physician · Portland, OR
Ingmar Klaseen Prokop, M.D. is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1881129948, issued on Apr 26, 2017. Check the license on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ingmar Klaseen Prokop
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD61055398 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 NW 23RD Ave, Portland, OR 97210
- Phone
- (503) 413-7074
- Enumerated
- Apr 26, 2017
- Record last updated
- Aug 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (503) 413-6892
- Medicare enrollment
- Enrolled (PECOS I20200921002223); accepts Medicare assignment
- 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 Ingmar Klaseen Prokop in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
161 Medicare Part D claims for 73 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Cefdinir14 claims
- Atorvastatin Calcium13 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 one group practice
- South Sound Inpatient Physicians PLLCBellingham, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ingmar Klaseen Prokop among 2,116 internal medicine physician records in Oregon
Ingmar Klaseen Prokop, M.D. 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 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 17% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2017 · median 2008 among the 1,232 with a school on file
- Record last updated2021 · 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 Ingmar Klaseen Prokop, M.D.'s NPI number?
Ingmar Klaseen Prokop, M.D.'s National Provider Identifier (NPI) is 1881129948, issued on Apr 26, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Ingmar Klaseen Prokop, M.D. located?
The NPPES record lists a practice address at 1200 NW 23RD Ave, Portland, OR, 97210. Phone: (503) 413-7074. Providers update this record themselves, so call before visiting.
How can I verify Ingmar Klaseen Prokop, M.D.'s license?
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 Ingmar Klaseen Prokop, M.D. prescribe under Medicare Part D?
In 2024, Ingmar Klaseen Prokop, M.D. had 161 Medicare Part D claims for 73 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.