Karsten L. Grinderslev, DMD
Dentist · New Holland, PA
Karsten L. Grinderslev, DMD is a dentist with a practice address in New Holland, Pennsylvania, and NPI 1992924989, issued on Apr 25, 2007. Check the license (Pennsylvania DS037034, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karsten L. Grinderslev
- Credential
- DMD
- Primary taxonomy
- Dentist 122300000X
- License number
- DS037034 PA
Self-reported in NPPES; status is on the state search - Practice location
- 650 E Main St, New Holland, PA 17557
- Phone
- (717) 354-3200
- Enumerated
- Apr 25, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (717) 354-8005
- Entity
- Type 1 · individual
8 nearest dentist records → All 3,339 in Pennsylvania → Look up another NPI →
Verify Karsten L. Grinderslev in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license DS037034Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average dentist in 2024
52 Medicare Part D claims for 41 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin33 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.
Karsten L. Grinderslev among 3,339 dentist records in Pennsylvania
Karsten L. Grinderslev, DMD is one of 3,339 dentist records with a practice address in Pennsylvania. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 26% of them.
- NPI issued2007 · 26% of these records are older, 57% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · 1% of these records are
- Record last updated2007 · 74% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 dentist records list a practice address in New Holland
They are 13 of the 150 NPPES records with a practice address in New Holland, and 3,339 dentist records in Pennsylvania.
All 3,339 in Pennsylvania → Every provider in New Holland → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- James Amor, D.M.D.New Holland, PA 175571487668620
- John Backof, D.D.S.New Holland, PA 175571083831820
- Christin Buehler, DDSNew Holland, PA 175571609162841
- Erica Federer, D.M.D.New Holland, PA 175571083093785
- John Forney, DDSNew Holland, PA 175571831292416
- Laura Harkin, D.M.D.New Holland, PA 175571942462890
- Zoe Johnstone, DMDNew Holland, PA 175571245289941
- Emily Nguyen, DDSNew Holland, PA 175571043144165
Common questions
What is Karsten L. Grinderslev, DMD's NPI number?
Karsten L. Grinderslev, DMD's National Provider Identifier (NPI) is 1992924989, issued on Apr 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karsten L. Grinderslev, DMD located?
The NPPES record lists a practice address at 650 E Main St, New Holland, PA, 17557. Phone: (717) 354-3200. Providers update this record themselves, so call before visiting.
How can I verify Karsten L. Grinderslev, DMD's license?
NPPES lists Pennsylvania license number DS037034, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Karsten L. Grinderslev, DMD prescribe under Medicare Part D?
In 2024, Karsten L. Grinderslev, DMD had 52 Medicare Part D claims for 41 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.