Thomas M. Karoff, DO
Internal Medicine Physician · Mt Kisco, NY
Thomas M. Karoff, DO is an internal medicine physician with a practice address in Mt Kisco, New York, and NPI 1366642142, issued on Jul 20, 2007. Check the license (New York 243062, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Thomas M. Karoff
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 243062 NY
Self-reported in NPPES; status is on the state search - Practice location
- 110 S. Bedford RD, Mt Kisco, NY 10549
- Phone
- (914) 241-1050
- Enumerated
- Jul 20, 2007
- Record last updated
- Feb 13, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (914) 242-1516
- Medicare enrollment
- Enrolled (PECOS I20071023000603); accepts Medicare assignment
- Medical or professional school
- Northeastern Ohio University College Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 110 S. Bedford RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Beth Freedman, M.D.Surgery Physician1821325457
Verify Thomas M. Karoff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 243062Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average internal medicine physician in 2024
4,010 Medicare Part D claims for 552 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 29 claims were for opioids.
Most prescribed
- Atorvastatin Calcium500 claims
- Levothyroxine Sodium171 claims
- Escitalopram Oxalate164 claims
- Amlodipine Besylate158 claims
- Lisinopril147 claims
- Rosuvastatin Calcium118 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.
Bills Medicare through one group practice
- Optum Medical Care PCMount Kisco, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas M. Karoff among 12,067 internal medicine physician records in New York
Thomas M. Karoff, DO is one of 12,067 internal medicine physician records with a practice address in New York. 79% 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 47% of them.
- NPI issued2007 · 47% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2004 · median 2002 among the 7,221 with a school on file
- Record last updated2017 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 internal medicine physician records list a practice address in Mt Kisco
They are 2 of the 68 NPPES records with a practice address in Mt Kisco, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Mt Kisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Barbara Alpert, MDMount Kisco, NY 105491194775536
- Alphonse Aversa, MDMount Kisco, NY 105491053361378
- Lisa Bardack, MDMount Kisco, NY 105491669421053
- Bernadette Davis, MDMount Kisco, NY 105491942253323
- Paul Kandel, MDMount Kisco, NY 105491013960194
- Marla Koroly, MDMount Kisco, NY 105491780677336
- Sharon Krieger, MDMount Kisco, NY 105491255386710
- Peter Levi, MDMount Kisco, NY 105491629064217
Common questions
What is Thomas M. Karoff, DO's NPI number?
Thomas M. Karoff, DO's National Provider Identifier (NPI) is 1366642142, issued on Jul 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thomas M. Karoff, DO located?
The NPPES record lists a practice address at 110 S. Bedford RD, Mt Kisco, NY, 10549. Phone: (914) 241-1050. Providers update this record themselves, so call before visiting.
How can I verify Thomas M. Karoff, DO's license?
NPPES lists New York license number 243062, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas M. Karoff, DO prescribe under Medicare Part D?
In 2024, Thomas M. Karoff, DO had 4,010 Medicare Part D claims for 552 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.