Constantine A. Manthous, M.D.
Critical Care Medicine (Internal Medicine) Physician · New Britain, CT
Constantine A. Manthous, M.D. is a critical care medicine (internal medicine) physician with a practice address in New Britain, Connecticut, and NPI 1780643759, issued on Mar 20, 2006. Check the license (Connecticut 031195, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Constantine A. Manthous
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 031195 CT
Self-reported in NPPES; status is on the state search - Practice location
- 100 Grand St, New Britain, CT 06052
- Phone
- (860) 224-5011
- Enumerated
- Mar 20, 2006
- Record last updated
- Jul 30, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 001311951 CT
- Medicare enrollment
- Enrolled (PECOS I20100422000599); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 40 in Connecticut → Look up another NPI →
Also registered at 100 Grand St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Abraham, PA-CSurgical Physician Assistant1922580984
- Atif Afzal, M.D.Internal Medicine Physician1760770234
- Casey Aivano, APRNFamily Nurse Practitioner1366050411
- Kelly Alberdi, LCSWClinical Social Worker1750575452
- Farhana Alladin, M.DInternal Medicine Physician1891361101
- Maria Allen, PA-CSurgical Physician Assistant1093034431
Verify Constantine A. Manthous in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 031195Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.0 times the Medicare Part D claims of the average critical care medicine (internal medicine) physician in 2024
4,862 Medicare Part D claims for 416 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 26 claims were for opioids.
Most prescribed
- Atorvastatin Calcium404 claims
- Lisinopril247 claims
- Losartan Potassium200 claims
- Amlodipine Besylate176 claims
- Levothyroxine Sodium143 claims
- Hydrochlorothiazide134 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: $144.31
11 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 2,708 providers of this specialty with any payment received $2,958.68 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.
Bills Medicare through 2 group practices
- David D Thompson JR And Robert A Linden PtrNiantic, CT
- Hospital Medicine Associates LLCWesterly, RI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Constantine A. Manthous among 40 critical care medicine (internal medicine) physician records in Connecticut
Constantine A. Manthous, M.D. is one of 40 critical care medicine (internal medicine) physician records with a practice address in Connecticut. 90% 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 0% of them.
- NPI issued2006 · 0% of these records are older, 65% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 88% of these records are
- Graduated1988 · median 2004 among the 35 with a school on file
- Record last updated2012 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Connecticut
There are 40 critical care medicine (internal medicine) physician records in Connecticut.
All 40 in Connecticut → Every provider in New Britain → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Rachel Madrid, MDNew Britain, CT 060521639359334
- Brendan Korb, MDManchester, CT 060401235766965
- Dana Crino, M.D.Farmington, CT 060301710924766
- Angad Deengar, MDFarmington, CT 060301447771027
- Tara Ferrante, MDHartford, CT 061021518549971
- Paul NittiWest Hartford, CT 061071700296878
- Andrey Zinchuk, M.D.North Haven, CT 064731831362292
- Adel Bassily-Marcus, MDNew Haven, CT 065101326014119
Common questions
What is Constantine A. Manthous, M.D.'s NPI number?
Constantine A. Manthous, M.D.'s National Provider Identifier (NPI) is 1780643759, issued on Mar 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Constantine A. Manthous, M.D. located?
The NPPES record lists a practice address at 100 Grand St, New Britain, CT, 06052. Phone: (860) 224-5011. Providers update this record themselves, so call before visiting.
How can I verify Constantine A. Manthous, M.D.'s license?
NPPES lists Connecticut license number 031195, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Constantine A. Manthous, M.D. prescribe under Medicare Part D?
In 2024, Constantine A. Manthous, M.D. had 4,862 Medicare Part D claims for 416 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.