Gregory Luke Larkin, MD
Emergency Medicine Physician · New Haven, CT
Gregory Luke Larkin, MD is an emergency medicine physician with a practice address in New Haven, Connecticut, and NPI 1205890084, issued on Apr 17, 2006. Check the license on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Luke Larkin
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD050271L PA
Self-reported in NPPES; status is on the state search - Practice location
- 464 Congress Ave Ste 260, New Haven, CT 06519
- Phone
- (203) 785-2353
- Enumerated
- Apr 17, 2006
- Record last updated
- Feb 10, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (203) 785-4580
- Medicaid ID
- 151006701 TX
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 846 in Connecticut → Look up another NPI →
Also registered at 464 Congress Ave Ste 260
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sean Bush, M.D.Emergency Medicine Physician1184739872
- Mikaela Coady, PA-CMedical Physician Assistant1528665197
- Katherine Couturier, M.D., M.P.H.Emergency Medicine Physician1669768115
- Aisha Droz Lopez, MDEmergency Medicine Physician1154893766
- Daniel Goldberg, PA-CPhysician Assistant1710590807
- Meghan Gwara, PA-CMedical Physician Assistant1023634565
Verify Gregory Luke Larkin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average emergency medicine physician in 2024
186 Medicare Part D claims for 140 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Prednisone39 claims
- Cephalexin29 claims
- Albuterol Sulfate Hfa13 claims
- Azithromycin11 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.
Gregory Luke Larkin among 846 emergency medicine physician records in Connecticut
Gregory Luke Larkin, MD is one of 846 emergency medicine physician records with a practice address in Connecticut. 86% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 65% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2017 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
204 emergency medicine physician records list a practice address in New Haven
They are 204 of the 9,793 NPPES records with a practice address in New Haven, and 846 emergency medicine physician records in Connecticut.
All 846 in Connecticut → Every provider in New Haven → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Mary Bogucki, MDNew Haven, CT 065191053392621
- Sean Bush, M.D.New Haven, CT 065191184739872
- Alexandra Carter, MDNew Haven, CT 065191407983190
- David Della-Giustina, MDNew Haven, CT 065191952366437
- Alyssa French, MDNew Haven, CT 065191407918709
- Barbara Kirrane, MDNew Haven, CT 065191710073713
- Michael Lyons, MDNew Haven, CT 065191790712172
- Damian Macdonald, MDNew Haven, CT 065191427046424
Common questions
What is Gregory Luke Larkin, MD's NPI number?
Gregory Luke Larkin, MD's National Provider Identifier (NPI) is 1205890084, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Luke Larkin, MD located?
The NPPES record lists a practice address at 464 Congress Ave Ste 260, New Haven, CT, 06519. Phone: (203) 785-2353. Providers update this record themselves, so call before visiting.
How can I verify Gregory Luke Larkin, MD's license?
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 Gregory Luke Larkin, MD prescribe under Medicare Part D?
In 2024, Gregory Luke Larkin, MD had 186 Medicare Part D claims for 140 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.