NPPES file of Aug 9, 2026

Brian D. Karsif, M.D.

Addiction Medicine (Preventive Medicine) Physician · New Haven, CT

Brian D. Karsif, M.D. is an addiction medicine (preventive medicine) physician with a practice address in New Haven, Connecticut, and NPI 1700922846, issued on Jan 29, 2007. Check the license (Connecticut 027141, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1700922846
Name
Brian D. Karsif
Credential
M.D.
Primary taxonomy
Addiction Medicine (Preventive Medicine) Physician 2083A0300X
License number
027141 CT
Self-reported in NPPES; status is on the state search
Practice location
915 Ella T Grasso Blvd, New Haven, CT 06519
Phone
(203) 349-9400
Enumerated
Jan 29, 2007
Record last updated
Feb 15, 2024
Fax
(475) 331-6317
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 915 Ella T Grasso Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Rosemond Ankrah, FNP/DNPFamily Nurse Practitioner1700453685
  2. Roger Ayres, M.D.Psychiatry Physician1013975945
  3. Stephanie Carulli-Deixler, OTOccupational Therapist1548467103
  4. Heather Chapin, MSHC, LADC, CACAddiction (Substance Use Disorder) Counselor1629713516
  5. Jennifer HamrinSpeech-Language Pathologist1336370394
  6. Ronald Orencia, APRNPsychiatric/Mental Health Nurse Practitioner1720868847

Verify Brian D. Karsif in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 027141    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Connecticut license search

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89% fewer Medicare Part D claims than the average addiction medicine (preventive medicine) physician in 2024

48 Medicare Part D claims for 11 beneficiaries, against an average of 420 among the 224 providers of this specialty who prescribed in Part D.

  1. Brian Karsif48
  2. Specialty average420

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: $285.23

6 payments; by number, the most common kind was food and beverage; the largest payer was Braeburn Inc. The 112 providers of this specialty with any payment received $596.46 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Brian Karsif$285.23
  2. Specialty average$596.46

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Addiction Medicine (Preventive Medicine) Physician providers in Connecticut

There are 4 addiction medicine (preventive medicine) physician records in Connecticut.

All 4 in Connecticut → Every provider in New Haven →

Other addiction medicine (preventive medicine) physician records in Connecticut

  1. Krystalyn Bates, DOMeriden, CT1053972695
  2. Jenna Butner, MDNew Haven, CT1316258775
  3. Michelle McDade, MDNew Britain, CT1801820972

Common questions

What is Brian D. Karsif, M.D.'s NPI number?

Brian D. Karsif, M.D.'s National Provider Identifier (NPI) is 1700922846, issued on Jan 29, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Brian D. Karsif, M.D. located?

The NPPES record lists a practice address at 915 Ella T Grasso Blvd, New Haven, CT, 06519. Phone: (203) 349-9400. Providers update this record themselves, so call before visiting.

How can I verify Brian D. Karsif, M.D.'s license?

NPPES lists Connecticut license number 027141, 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 Brian D. Karsif, M.D. prescribe under Medicare Part D?

In 2024, Brian D. Karsif, M.D. had 48 Medicare Part D claims for 11 beneficiaries; the average among addiction medicine (preventive medicine) physician prescribers was 420. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.