Mark Kwalbrun, MD
Diagnostic Radiology Physician · Watertown, NY
Mark Kwalbrun, MD is a diagnostic radiology physician with a practice address in Watertown, New York, and NPI 1811997042, issued on Jul 29, 2005. Check the license (New York 225726, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mark Kwalbrun
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 225726 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1571 Washington St, Watertown, NY 13601
- Phone
- (315) 786-5000
- Enumerated
- Jul 29, 2005
- Record last updated
- Jan 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (315) 786-5001
- Medicaid ID
- 02461787 NY
- Medicare enrollment
- Enrolled (PECOS I20040419000521); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 1997
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 3,146 in New York → Look up another NPI →
Also registered at 1571 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susanne Daye, MDDiagnostic Radiology Physician1104818707
- Myla Estepa, MDPediatrics Physician1720274657
- Karen Fish, MPAS, PA-CSurgical Physician Assistant1104816107
Verify Mark Kwalbrun 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 225726Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2 hospitals and group practices
- Samaritan Medical CenterAdams, NY · Acute Care Hospitals2 of 5 stars
- St Lawrence Radiology Assoc PCPotsdam, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mark Kwalbrun among 3,146 diagnostic radiology physician records in New York
Mark Kwalbrun, MD is one of 3,146 diagnostic radiology physician records with a practice address in New York. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1997 · median 2002 among the 2,169 with a school on file
- Record last updated2014 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in New York
There are 3,146 diagnostic radiology physician records in New York.
All 3,146 in New York → Every provider in Watertown → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Susanne Daye, MDWatertown, NY 136011104818707
- Daniel Gray, MDWatertown, NY 136011851383343
- Patrick Lanigan, MDWatertown, NY 136011710970991
- Tint Lwin, MDCortland, NY 136011770542383
- Richard Sherry, M.D.Watertown, NY 136011538163985
- Jeffrey Way, MDWatertown, NY 136011427041508
- Daniel Weber, MDWatertown, NY 136011154314235
- Robert Blackstock, MDFort Drum, NY 136021932198181
Common questions
What is Mark Kwalbrun, MD's NPI number?
Mark Kwalbrun, MD's National Provider Identifier (NPI) is 1811997042, issued on Jul 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Kwalbrun, MD located?
The NPPES record lists a practice address at 1571 Washington St, Watertown, NY, 13601. Phone: (315) 786-5000. Providers update this record themselves, so call before visiting.
How can I verify Mark Kwalbrun, MD's license?
NPPES lists New York license number 225726, 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.
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.