NPPES file of Aug 9, 2026

Alan David Kestenbaum, M.D.

Anesthesiology Physician · Waterbury, CT

Alan David Kestenbaum, M.D. is an anesthesiology physician with a practice address in Waterbury, Connecticut, and NPI 1043223597, issued on Aug 15, 2006. Check the license (Connecticut 66608, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1043223597
Name
Alan David Kestenbaum
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
66608 CT
1678921 NY
Self-reported in NPPES; status is on the state search
Practice location
64 Robbins St, Waterbury, CT 06708
Phone
(203) 573-6000
Enumerated
Aug 15, 2006
Record last updated
Oct 20, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20220203000751); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 64 Robbins St

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

  1. Wayne Abrahams, MDEmergency Medicine Physician1508886227
  2. Elijah AdamsPhysician Assistant1598570939
  3. Jennifer Aldrich, PA-CPhysician Assistant1992108757
  4. Muhammad Saad Bin AmjadHospitalist Physician1508247305
  5. Samuel Amoakohene, M.D.Anesthesiology Physician1144632241
  6. Andrea AndersenPhysician Assistant1265921399

Verify Alan David Kestenbaum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 66608
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Treasure Coast Anesthesia Group PAStuart, FL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

32 anesthesiology physician records list a practice address in Waterbury

They are 32 of the 3,148 NPPES records with a practice address in Waterbury, and 797 anesthesiology physician records in Connecticut.

Other anesthesiology physician records in Connecticut

  1. Hanief Abrahams, M.D.Greenwich, CT1497798235
  2. Jonathan Abrams, MDHartford, CT1528010337
  3. Robert Adam, M.D.Willimantic, CT1427161827
  4. Oluwakemi Adesina, MDNew Haven, CT1306581277
  5. Jacob Aftel, MDSharon, CT1801884598
  6. Neha Agrawal, MDHartford, CT1760973630
  7. William Ahn, M.D.East Hartford, CT1568460418
  8. Shamsuddin Akhtar, MDNew Haven, CT1639151798
  9. Caroline Al HaddadinNew Haven, CT1629218086
  10. Yasser Al-Baghdadi, M.D.Hartford, CT1023045184

Common questions

What is Alan David Kestenbaum, M.D.'s NPI number?

Alan David Kestenbaum, M.D.'s National Provider Identifier (NPI) is 1043223597, issued on Aug 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alan David Kestenbaum, M.D. located?

The NPPES record lists a practice address at 64 Robbins St, Waterbury, CT, 06708. Phone: (203) 573-6000. Providers update this record themselves, so call before visiting.

How can I verify Alan David Kestenbaum, M.D.'s license?

NPPES lists Connecticut license number 66608, 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.

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.