Robert J. Deregis, DMD
General Practice Dentistry · Lexington, MA
Robert J. Deregis, DMD is a general practice dentistry with a practice address in Lexington, Massachusetts, and NPI 1700917895, issued on Mar 8, 2007. Check the license (Massachusetts 18626, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Robert J. Deregis
- Credential
- DMD
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 18626 MA
Self-reported in NPPES; status is on the state search - Practice location
- 183 Bedford St, Lexington, MA 02420
- Phone
- (781) 862-7474
- Enumerated
- Mar 8, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (781) 862-7475
- Entity
- Type 1 · individual
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Verify Robert J. Deregis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 18626Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average general practice dentistry in 2024
20 Medicare Part D claims for 16 beneficiaries, 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
- Amoxicillin18 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.
Robert J. Deregis among 3,489 general practice dentistry records in Massachusetts
Robert J. Deregis, DMD 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 2007, is newer than 37% of them.
- NPI issued2007 · 37% of these records are older, 41% 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).
28 general practice dentistry records list a practice address in Lexington
They are 28 of the 1,467 NPPES records with a practice address in Lexington, and 3,489 general practice dentistry records in Massachusetts.
All 3,489 in Massachusetts → Every provider in Lexington → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Hyung-Jun Ahn, DMDLexington, MA 024201508989476
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- Youngjoo Cha, D.M.D.Lexington, MA 024201407979370
- Barry Cunha, D.D.S.Lexington, MA 024201427069608
- Paul Dimattia, DDSLexington, MA 024201750500807
- Xing Fan, D.M.D.Lexington, MA 024201629354071
- Galina Gitlin, DMDLexington, MA 024201417038498
- Benjamin Hadar, DMDLexington, MA 024201821020397
Common questions
What is Robert J. Deregis, DMD's NPI number?
Robert J. Deregis, DMD's National Provider Identifier (NPI) is 1700917895, issued on Mar 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. Deregis, DMD located?
The NPPES record lists a practice address at 183 Bedford St, Lexington, MA, 02420. Phone: (781) 862-7474. Providers update this record themselves, so call before visiting.
How can I verify Robert J. Deregis, DMD's license?
NPPES lists Massachusetts license number 18626, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Robert J. Deregis, DMD prescribe under Medicare Part D?
In 2024, Robert J. Deregis, DMD had 20 Medicare Part D claims for 16 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.