Karl Daniel Molenaar, M.D.
Family Medicine Physician · Rochester, MN
Karl Daniel Molenaar, M.D. is a family medicine physician with a practice address in Rochester, Minnesota, and NPI 1083632970, issued on Jul 18, 2006. Check the license (Minnesota 29085, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Karl Daniel Molenaar
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 29085 MN
Self-reported in NPPES; status is on the state search - Practice location
- 210 9TH St SE, Rochester, MN 55904
- Phone
- (507) 288-3443
- Enumerated
- Jul 18, 2006
- Record last updated
- Feb 21, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 287578100 MN
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,985 in Minnesota → Look up another NPI →
Also registered at 210 9TH St SE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karl Daniel Molenaar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 29085Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 90% of the cost of the top drugs
2,380 Medicare Part D claims for 861 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims. 20 claims were for opioids.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy343 claims
- Shingrix276 claims
- Boostrix Tdap185 claims
- Atorvastatin Calcium155 claims
- Olmesartan Medoxomil58 claims
- Amlodipine Besylate51 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.
Karl Daniel Molenaar among 3,985 family medicine physician records in Minnesota
Karl Daniel Molenaar, M.D. is one of 3,985 family medicine physician records with a practice address in Minnesota. 74% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 42% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2013 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
200 family medicine physician records list a practice address in Rochester
They are 200 of the 12,854 NPPES records with a practice address in Rochester, and 3,985 family medicine physician records in Minnesota.
All 3,985 in Minnesota → Every provider in Rochester → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Steven Adamson, M.D.Rochester, MN 559041093791105
- Duane BartelsRochester, MN 559041285673509
- David Edwardy, D.O.Rochester, MN 559041699765982
- Joylynn Gonzales, MDRochester, MN 559041487686747
- Randy HemannRochester, MN 559041659324846
- Melanie JohnsonRochester, MN 559041144272808
- David LundbergRochester, MN 559041881646586
- Robert MerrillRochester, MN 559041831143205
Common questions
What is Karl Daniel Molenaar, M.D.'s NPI number?
Karl Daniel Molenaar, M.D.'s National Provider Identifier (NPI) is 1083632970, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karl Daniel Molenaar, M.D. located?
The NPPES record lists a practice address at 210 9TH St SE, Rochester, MN, 55904. Phone: (507) 288-3443. Providers update this record themselves, so call before visiting.
How can I verify Karl Daniel Molenaar, M.D.'s license?
NPPES lists Minnesota license number 29085, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karl Daniel Molenaar, M.D. prescribe under Medicare Part D?
In 2024, Karl Daniel Molenaar, M.D. had 2,380 Medicare Part D claims for 861 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.