Mark William Hartzler, DMD
General Practice Dentistry · Gorham, NH
Mark William Hartzler, DMD is a general practice dentistry with a practice address in Gorham, New Hampshire, and NPI 1215287271, issued on Sep 17, 2012. Check the license (New Hampshire 03961, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark William Hartzler
- Credential
- DMD
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License numbers
- 03961 NH
DN1856094 MA
Self-reported in NPPES; status is on the state search - Practice location
- 22 Exchange St, Gorham, NH 03581
- Phone
- (603) 466-5015
- Enumerated
- Sep 17, 2012
- Record last updated
- Jan 3, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 22 Exchange St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Avinash Cherian, D.M.DDentist1013025378
- Eric Hamilton, D.M.D.General Practice Dentistry1255632113
- Lindsey Jackson, DMDDentist1144584319
- Richard Mitchell, D.M.D.General Practice Dentistry1295751675
- Paul Schoenbeck, DMDGeneral Practice Dentistry1093702797
Verify Mark William Hartzler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license 03961Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average general practice dentistry in 2024
14 Medicare Part D claims, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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: $80.66
1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 41,669 providers of this specialty with any payment received $597.01 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.
5 general practice dentistry records list a practice address in Gorham
They are 5 of the 50 NPPES records with a practice address in Gorham, and 562 general practice dentistry records in New Hampshire.
All 5 in Gorham → All 562 in New Hampshire → Every provider in Gorham →
Other general practice dentistry records in New Hampshire
- Jay Afrow, D.M.D.Dover, NH1417014994
- Brian Ahern, DMDDerry, NH1023740602
- John Ahern, D.D.S.Exeter, NH1821175738
- John Ahern, D.D.S.Derry, NH1467539387
- Timothy Ahern, DMDExeter, NH1003337288
- Saeed Ahmed, DMDNashua, NH1245379817
- Jasper Ainslie, DDSPeterborough, NH1083627913
- Mohammed Al AzzawiAmherst, NH1306531991
- Charles Albee, D.M.D.Pembroke, NH1871537928
- Laurence Albright, DMDPortsmouth, NH1457497703
Common questions
What is Mark William Hartzler, DMD's NPI number?
Mark William Hartzler, DMD's National Provider Identifier (NPI) is 1215287271, issued on Sep 17, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark William Hartzler, DMD located?
The NPPES record lists a practice address at 22 Exchange St, Gorham, NH, 03581. Phone: (603) 466-5015. Providers update this record themselves, so call before visiting.
How can I verify Mark William Hartzler, DMD's license?
NPPES lists New Hampshire license number 03961, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
How much does Mark William Hartzler, DMD prescribe under Medicare Part D?
In 2024, Mark William Hartzler, DMD had 14 Medicare Part D claims; the average among general practice dentistry prescribers was 83. 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.