Douglas Richard Marks, DMD
Dentist · Harrisburg, PA
Douglas Richard Marks, DMD is a dentist with a practice address in Harrisburg, Pennsylvania, and NPI 1407921422, issued on Nov 22, 2006. Check the license (Pennsylvania DS025543L, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Douglas Richard Marks
- Credential
- DMD
- Primary taxonomy
- Dentist 122300000X
- License number
- DS025543L PA
Self-reported in NPPES; status is on the state search - Practice location
- 2340 Derry St, Harrisburg, PA 17104
- Phone
- (717) 564-5147
- Enumerated
- Nov 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (717) 564-5147
- Entity
- Type 1 · individual
8 nearest dentist records → All 3,339 in Pennsylvania → Look up another NPI →
Verify Douglas Richard Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license DS025543LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average dentist in 2024
53 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. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin42 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.
Douglas Richard Marks among 3,339 dentist records in Pennsylvania
Douglas Richard Marks, 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 74% 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).
47 dentist records list a practice address in Harrisburg
They are 47 of the 3,963 NPPES records with a practice address in Harrisburg, and 3,339 dentist records in Pennsylvania.
All 3,339 in Pennsylvania → Every provider in Harrisburg → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Kevin Ferguson, DMDHarrisburg, PA 171041659365492
- Sandeep Sandhu, DDSHarrisburg, PA 171031619264249
- Clifford Sensenig, DMDHarrisburg, PA 171031093870891
- John Thompson, DMDHarrisburg, PA 171031710009543
- Thaddeus Phillips, DDSHarrisburg, PA 171021154434918
- Indu Cherangapadath RadhakrishnanHarrisburg, PA 171091518667948
- Akpovona Efeturi, DDSHarrisburg, PA 171091770935686
- Sheena Emmanuel, DMDHarrisburg, PA 171091457844664
Common questions
What is Douglas Richard Marks, DMD's NPI number?
Douglas Richard Marks, DMD's National Provider Identifier (NPI) is 1407921422, issued on Nov 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Richard Marks, DMD located?
The NPPES record lists a practice address at 2340 Derry St, Harrisburg, PA, 17104. Phone: (717) 564-5147. Providers update this record themselves, so call before visiting.
How can I verify Douglas Richard Marks, DMD's license?
NPPES lists Pennsylvania license number DS025543L, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Douglas Richard Marks, DMD prescribe under Medicare Part D?
In 2024, Douglas Richard Marks, DMD had 53 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.