Catherine O'Neill Buck, MD
Neonatal-Perinatal Medicine Physician · New Haven, CT
Catherine O'Neill Buck, MD is a neonatal-perinatal medicine physician with a practice address in New Haven, Connecticut, and NPI 1437425402, issued on Mar 23, 2012. Check the license (Connecticut 62689, as entered in NPPES) on the Connecticut Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Catherine O'Neill Buck
- Credential
- MD
- Primary taxonomy
- Neonatal-Perinatal Medicine Physician 2080N0001X
- License numbers
- 62689 CT
MD15391 RI
Q0881 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1 Park St, New Haven, CT 06504
- Phone
- (401) 274-1122
- Enumerated
- Mar 23, 2012
- Record last updated
- Apr 29, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 1 Park St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Riley AbernethyAudiologist1003709593
- Aziez Ahmed, M.D.Pediatric Cardiology Physician1821438326
- Elena Aragona, MDPediatrics Physician1912131483
- Claudia Auerbach, APRNPediatric Nurse Practitioner1306175054
- Christine BakhoumPediatric Nephrology Physician1063806024
- Nitya Bakshi, MDPediatric Hematology & Oncology Physician1174764252
Verify Catherine O'Neill Buck in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 62689Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Neonatal-Perinatal Medicine Physician providers in Connecticut
There are 108 neonatal-perinatal medicine physician records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other neonatal-perinatal medicine physician records in Connecticut
- Jorge Alba, DOManchester, CT1255314761
- Jose Arias-Camison, MDHartford, CT1215935317
- Fadel Balawi, M.D.Hartford, CT1336448901
- Bharati Banerjee, MDStamford, CT1740215789
- James Belisle, MDNorwalk, CT1679543136
- Ambika BhatnagarNew Haven, CT1558824771
- Matthew Bizzarro, MDNew Haven, CT1487637203
- Christie Bruno, DONew Haven, CT1346378973
- Arvin Bundhoo, MDHartford, CT1497985733
- Antoinetta Capriglione, MDNew Britain, CT1932186848
Common questions
What is Catherine O'Neill Buck, MD's NPI number?
Catherine O'Neill Buck, MD's National Provider Identifier (NPI) is 1437425402, issued on Mar 23, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Catherine O'Neill Buck, MD located?
The NPPES record lists a practice address at 1 Park St, New Haven, CT, 06504. Phone: (401) 274-1122. Providers update this record themselves, so call before visiting.
How can I verify Catherine O'Neill Buck, MD's license?
NPPES lists Connecticut license number 62689, 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. 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.