Constant Crohin, DMD
Periodontics · Waltham, MA
Constant Crohin, DMD is a periodontics with a practice address in Waltham, Massachusetts, and NPI 1124199500, issued on Nov 10, 2006. Check the license (Massachusetts 19460, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Constant Crohin
- Credential
- DMD
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 19460 MA
Self-reported in NPPES; status is on the state search - Practice location
- 212 Charles St, Waltham, MA 02453
- Phone
- (781) 894-4424
- Enumerated
- Nov 10, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest periodontics records → All 390 in Massachusetts → Look up another NPI →
Also registered at 212 Charles St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Salome Farzaneh, DMDDentist1932256740
Verify Constant Crohin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 19460Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average periodontics in 2024
192 Medicare Part D claims for 113 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin122 claims
- Chlorhexidine Gluconate39 claims
- Azithromycin17 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.
Constant Crohin among 390 periodontics records in Massachusetts
Constant Crohin, DMD is one of 390 periodontics records with a practice address in Massachusetts. 54% 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, 72% newer
- In a Medicare fileYes · 54% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2007 · 81% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in Massachusetts
There are 390 periodontics records in Massachusetts.
All 390 in Massachusetts → Every provider in Waltham → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- David Goldberg, DMDWaltham, MA 024511053405886
- Abdullah OthmanWaltham, MA 024511801279740
- Angela Filandrianos, D.M.D.Newtonville, MA 024581407978299
- Kathleen BarrettNewton Centre, MA 024591184045965
- Norman Lee, DMDNewton, MA 024591851468060
- Rustom Mehta, DMDNewton, MA 024591730378076
- Sarah Shih, D.D.S., M.S., D.M.SCNewton Centre, MA 024591386740322
- Alan Solowsky, D.D.S.Newton Centre, MA 024591861514291
Common questions
What is Constant Crohin, DMD's NPI number?
Constant Crohin, DMD's National Provider Identifier (NPI) is 1124199500, issued on Nov 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Constant Crohin, DMD located?
The NPPES record lists a practice address at 212 Charles St, Waltham, MA, 02453. Phone: (781) 894-4424. Providers update this record themselves, so call before visiting.
How can I verify Constant Crohin, DMD's license?
NPPES lists Massachusetts license number 19460, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Constant Crohin, DMD prescribe under Medicare Part D?
In 2024, Constant Crohin, DMD had 192 Medicare Part D claims for 113 beneficiaries; the average among periodontics prescribers was 277. 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.