David Michael Markham, D.M.D
General Practice Dentistry · Chelmsford, MA
David Michael Markham, D.M.D is a general practice dentistry with a practice address in Chelmsford, Massachusetts, and NPI 1093823304, issued on Aug 27, 2006. Check the license (Massachusetts 18937, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- David Michael Markham
- Credential
- D.M.D
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 18937 MA
Self-reported in NPPES; status is on the state search - Practice location
- 21 Chelmsford St, Chelmsford, MA 01824
- Phone
- (978) 250-0079
- Enumerated
- Aug 27, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 21 Chelmsford St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah Ratte, DMDDentist1194057760
- Michael Sargent, DDSGeneral Practice Dentistry1538208632
Verify David Michael Markham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 18937Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average general practice dentistry in 2024
12 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.
Most prescribed
- Amoxicillin11 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: $34.83
2 payments; by number, the most common kind was food and beverage; the largest payer was OraPharma, a division of Bausch Health US, LLC. 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.
21 general practice dentistry records list a practice address in Chelmsford
They are 21 of the 937 NPPES records with a practice address in Chelmsford, and 3,489 general practice dentistry records in Massachusetts.
All 21 in Chelmsford → All 3,489 in Massachusetts → Every provider in Chelmsford →
Other general practice dentistry records in Massachusetts
- Mark Aaron, DMDGreat Barrington, MA1902020902
- Heidi Aaronson, D.M.D.Wellesley, MA1134375652
- Jamil Abbasy, DMDSouthampton, MA1992988026
- Sama Abdul-Aziz, DMDBoston, MA1427543610
- Muhannad AbdulghaniBrockton, MA1326806654
- Noor AbdulkareemQuincy, MA1932809662
- Asma AbdullahShrewsbury, MA1225301237
- Abdulaziz Abdulwahed, BDSBoston, MA1730637414
- Sabahat Abernethy, DMD, CAGSAbington, MA1518089903
- Rana Abood, DMDBoston, MA1376660936
Common questions
What is David Michael Markham, D.M.D's NPI number?
David Michael Markham, D.M.D's National Provider Identifier (NPI) is 1093823304, issued on Aug 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Michael Markham, D.M.D located?
The NPPES record lists a practice address at 21 Chelmsford St, Chelmsford, MA, 01824. Phone: (978) 250-0079. Providers update this record themselves, so call before visiting.
How can I verify David Michael Markham, D.M.D's license?
NPPES lists Massachusetts license number 18937, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does David Michael Markham, D.M.D prescribe under Medicare Part D?
In 2024, David Michael Markham, D.M.D had 12 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.