Gary C. Demetriou, D.M.D.
General Practice Dentistry · North Andover, MA
Gary C. Demetriou, D.M.D. is a general practice dentistry with a practice address in North Andover, Massachusetts, and NPI 1508946534, issued on Oct 16, 2006. Check the license (Massachusetts 16603, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gary C. Demetriou
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 16603 MA
Self-reported in NPPES; status is on the state search - Practice location
- 198 Massachusetts Ave, North Andover, MA 01845
- Phone
- (978) 794-0010
- Enumerated
- Oct 16, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (978) 683-3790
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 3,489 in Massachusetts → Look up another NPI →
Also registered at 198 Massachusetts Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Baumann, AUDAudiologist1801107958
- Danielle Britt, PTAPhysical Therapy Assistant1760992010
- Mary Brockway, MA, CCC-AAudiologist1861601338
- Haley CallahanPhysician Assistant1154969632
- Christopher GarronAudiologist1689129926
- Laura GerbergPhysical Therapist1295463883
Verify Gary C. Demetriou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 16603Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average general practice dentistry in 2024
64 Medicare Part D claims for 46 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin32 claims
- Penicillin V Potassium16 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: $40.04
1 payment: food and beverage; the largest payer was Envista Holdings Corporation. 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.
Gary C. Demetriou among 3,489 general practice dentistry records in Massachusetts
Gary C. Demetriou, D.M.D. is one of 3,489 general practice dentistry records with a practice address in Massachusetts. 58% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 63% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 general practice dentistry records list a practice address in North Andover
They are 15 of the 840 NPPES records with a practice address in North Andover, and 3,489 general practice dentistry records in Massachusetts.
All 3,489 in Massachusetts → Every provider in North Andover → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Rachelle Abou-Ezzi, D.M.DNorth Andover, MA 018451164579389
- David Bardwell, DMD, MSNorth Andover, MA 018451629082441
- Eugene Beliveau, D.D.SNorth Andover, MA 018451427068543
- Mandy Chan, DMDNorth Andover, MA 018451033132246
- John Cogliano, D.M.D.North Andover, MA 018451215340971
- Frank Coppola, DMDNorth Andover, MA 018451730284498
- Peter Devlin, DMDNorth Andover, MA 018451770591158
- Yunji Lee, DMDNorth Andover, MA 018451568862589
Common questions
What is Gary C. Demetriou, D.M.D.'s NPI number?
Gary C. Demetriou, D.M.D.'s National Provider Identifier (NPI) is 1508946534, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary C. Demetriou, D.M.D. located?
The NPPES record lists a practice address at 198 Massachusetts Ave, North Andover, MA, 01845. Phone: (978) 794-0010. Providers update this record themselves, so call before visiting.
How can I verify Gary C. Demetriou, D.M.D.'s license?
NPPES lists Massachusetts license number 16603, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Gary C. Demetriou, D.M.D. prescribe under Medicare Part D?
In 2024, Gary C. Demetriou, D.M.D. had 64 Medicare Part D claims for 46 beneficiaries; 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.