John Cahill, MD
Psychiatry Physician · New Haven, CT
John Cahill, MD is a psychiatry physician with a practice address in New Haven, Connecticut, and NPI 1467690271, issued on Feb 2, 2009. Check the license (Connecticut 048918, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Cahill
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 048918 CT
Self-reported in NPPES; status is on the state search - Practice location
- 300 George St, New Haven, CT 06511
- Phone
- (203) 785-2095
- Enumerated
- Feb 2, 2009
- Record last updated
- Jul 16, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,174 in Connecticut → Look up another NPI →
Also registered at 300 George St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yasmeen Abdul-KarimPsychiatry Physician1609296292
- Simran Ailani, M.B.B.S.Student in an Organized Health Care Education/Training Program1568107522
- Marissa Bayerl, APRNPsychiatric/Mental Health Nurse Practitioner1972958429
- Hilary Blumberg, M.D.Psychiatry Physician1679511299
- Lara Chepenik, M.D. PH.D.Specialist1528265444
- Sara Correia, CRNACertified Registered Nurse Anesthetist1689089781
Verify John Cahill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 048918Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average psychiatry physician in 2024
154 Medicare Part D claims for 22 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Vilazodone Hcl14 claims
- Lurasidone Hcl13 claims
- Trazodone Hcl11 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.
John Cahill among 1,174 psychiatry physician records in Connecticut
John Cahill, MD is one of 1,174 psychiatry physician records with a practice address in Connecticut. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 61% of them.
- NPI issued2009 · 61% of these records are older, 37% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2019 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
285 psychiatry physician records list a practice address in New Haven
They are 285 of the 9,793 NPPES records with a practice address in New Haven, and 1,174 psychiatry physician records in Connecticut.
All 1,174 in Connecticut → Every provider in New Haven → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Erica Ahlert, MDNew Haven, CT 065111750479481
- Hilary Blumberg, M.D.New Haven, CT 065111679511299
- Michael Groner, M. D.New Haven, CT 065111316973134
- Jeffry Klugman, MDNew Haven, CT 065111225023203
- Helen Lankenau, M.D.New Haven, CT 065111215016639
- Gale Levin, M.D.New Haven, CT 065111679508469
- Keith Pearlman, MDNew Haven, CT 065111588622088
- Stanley Possick, MDNew Haven, CT 065111366478315
Common questions
What is John Cahill, MD's NPI number?
John Cahill, MD's National Provider Identifier (NPI) is 1467690271, issued on Feb 2, 2009. An NPI identifies a provider in billing; it is not a license.
Where is John Cahill, MD located?
The NPPES record lists a practice address at 300 George St, New Haven, CT, 06511. Phone: (203) 785-2095. Providers update this record themselves, so call before visiting.
How can I verify John Cahill, MD's license?
NPPES lists Connecticut license number 048918, 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.
How much does John Cahill, MD prescribe under Medicare Part D?
In 2024, John Cahill, MD had 154 Medicare Part D claims for 22 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.