Matthew S. Kolkman, DDS
Dentist · Grabill, IN
Matthew S. Kolkman, DDS is a dentist with a practice address in Grabill, Indiana, and NPI 1255693396, issued on Jun 14, 2012. Check the license (Indiana 12011830A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew S. Kolkman
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 12011830A IN
Self-reported in NPPES; status is on the state search - Practice location
- 13307 Witmer RD, Grabill, IN 46741
- Phone
- (260) 627-1121
- Enumerated
- Jun 14, 2012
- Record last updated
- Jun 14, 2012 (not updated in 14 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 1,582 in Indiana → Look up another NPI →
Also registered at 13307 Witmer RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ryann Velez, DDSDentist1679469555
Verify Matthew S. Kolkman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Indiana board licenses this profession
Search for license 12011830ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average dentist in 2024
56 Medicare Part D claims for 39 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin24 claims
- Amoxicillin20 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.
Industry payments in 2024: $24.48
2 payments; by number, the most common kind was food and beverage; the largest payer was Solventum Corporation. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Matthew S. Kolkman among 1,582 dentist records in Indiana
Matthew S. Kolkman, DDS is one of 1,582 dentist records with a practice address in Indiana. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 52% of them.
- NPI issued2012 · 52% of these records are older, 46% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2012 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 dentist records list a practice address in Grabill
They are 2 of the 14 NPPES records with a practice address in Grabill, and 1,582 dentist records in Indiana.
All 1,582 in Indiana → Every provider in Grabill → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Ryann Velez, DDSGrabill, IN 467411679469555
- Megan Linstromberg, DDSGarrett, IN 467381750694998
- Greg Barry, D.D.S.Fremont, IN 467371578792941
- Adam Stump, DDSFremont, IN 467371093368391
- Kelsey Pence, DDSHuntertown, IN 467481134961485
- Matthew Baker, DDS DENTISTDecatur, IN 467331033284328
- Terry Baker, DDS DENTISTDecatur, IN 467331033284310
- Todd Evans, D.D.S.Decatur, IN 467331386736742
Common questions
What is Matthew S. Kolkman, DDS's NPI number?
Matthew S. Kolkman, DDS's National Provider Identifier (NPI) is 1255693396, issued on Jun 14, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Matthew S. Kolkman, DDS located?
The NPPES record lists a practice address at 13307 Witmer RD, Grabill, IN, 46741. Phone: (260) 627-1121. Providers update this record themselves, so call before visiting.
How can I verify Matthew S. Kolkman, DDS's license?
NPPES lists Indiana license number 12011830A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.
How much does Matthew S. Kolkman, DDS prescribe under Medicare Part D?
In 2024, Matthew S. Kolkman, DDS had 56 Medicare Part D claims for 39 beneficiaries; the average among dentist prescribers was 86. 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.