NPPES file of Aug 9, 2026

Michael Kevin O'Brien, M.D.

Surgery Physician · New Haven, CT

Michael Kevin O'Brien, M.D. is a surgery physician with a practice address in New Haven, Connecticut, and NPI 1730107061, issued on Jul 17, 2006. Check the license (Connecticut 035075, 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
1730107061
Name
Michael Kevin O'Brien
Credential
M.D.
Primary taxonomy
Surgery Physician 208600000X
License number
035075 CT
Self-reported in NPPES; status is on the state search
Practice location
60 Temple St, New Haven, CT 06510
Phone
(203) 772-0650
Enumerated
Jul 17, 2006
Record last updated
Jan 8, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(203) 785-9097
Medicaid ID
001405150 CT
Medicare enrollment
Enrolled (PECOS I20101120000112); accepts Medicare assignment
Medical or professional school
Wake Forest University School Of Medicine, 1991
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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8 nearest surgery physician records → All 360 in Connecticut → Look up another NPI →

Also registered at 60 Temple St

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

  1. William Allen, M.D.Specialist1659369361
  2. Paul Barcewicz, M.D.Surgery Physician1164470548
  3. Richard Becker, M.D.Neuroradiology Physician1225026933
  4. Carl Braunstein, RPHPharmacist1023091881
  5. Charles Disabatino, MDRheumatology Physician1457337644
  6. Andrew Graham, M.D.Surgery Physician1700804036

Verify Michael Kevin O'Brien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 035075    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. Surgical Associates OF New Haven PCGuilford, CT

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

Michael Kevin O'Brien among 360 surgery physician records in Connecticut

Michael Kevin O'Brien, M.D. is one of 360 surgery physician records with a practice address in Connecticut. 73% 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 9% of them.

  • NPI issued2006 · 9% of these records are older, 49% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated1991 · median 2002 among the 219 with a school on file
  • Record last updated2013 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in Connecticut

There are 360 surgery physician records in Connecticut.

All 360 in Connecticut → Every provider in New Haven → Surgery Physician nationwide →

The 8 surgery physician records with the nearest ZIP codes

  1. Paul Barcewicz, M.D.New Haven, CT 065101164470548
  2. Andrew Duffy, M. D.New Haven, CT 065101386686152
  3. Mark Faries, M.D.New Haven, CT 065101659428969
  4. Courtney Gibson, MDNew Haven, CT 065101275746869
  5. Mehra Golshan, MDNew Haven, CT 065101982694113
  6. Andrew Graham, M.D.New Haven, CT 065101700804036
  7. Daniel Kim, M.D.New Haven, CT 065101639113806
  8. Adrian Maung, MDNew Haven, CT 065101043292147

Common questions

What is Michael Kevin O'Brien, M.D.'s NPI number?

Michael Kevin O'Brien, M.D.'s National Provider Identifier (NPI) is 1730107061, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael Kevin O'Brien, M.D. located?

The NPPES record lists a practice address at 60 Temple St, New Haven, CT, 06510. Phone: (203) 772-0650. Providers update this record themselves, so call before visiting.

How can I verify Michael Kevin O'Brien, M.D.'s license?

NPPES lists Connecticut license number 035075, 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.

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.