Gregory Haffner, M.D.
Ophthalmology Physician · Hamden, CT
Gregory Haffner, M.D. is an ophthalmology physician with a practice address in Hamden, Connecticut, and NPI 1407886450, issued on Jul 4, 2006. Check the license (Connecticut 043419, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Haffner
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 043419 CT
Self-reported in NPPES; status is on the state search - Practice location
- 2200 Whitney Ave, Hamden, CT 06518
- Phone
- (203) 288-2020
- Enumerated
- Jul 4, 2006
- Record last updated
- Jun 14, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (203) 288-2470
- Medicare enrollment
- Enrolled (PECOS I20050720000545); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 336 in Connecticut → Look up another NPI →
Also registered at 2200 Whitney Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Anderson, M.D.Pediatrics Physician1659332989
- Alicia Antman, M.D.Pediatrics Physician1497888630
- David Astrachan, MDOtolaryngology Physician1225009046
- Karin Augur, PAMedical Physician Assistant1588654933
- Nina Babu, DPMPodiatrist1114248564
- Renu Bazaz-Kapoor, DOInternal Medicine Physician1427045954
Verify Gregory Haffner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 043419Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average ophthalmology physician in 2024
242 Medicare Part D claims for 88 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Prednisolone Acetate81 claims
- Moxifloxacin43 claims
- Atropine Sulfate36 claims
- Ketorolac Tromethamine12 claims
- Timolol Maleate11 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.
The MIPS final score for 2023 (Medicare payment program): 94.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $239.30
9 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Refocus Eye Health OF Central Connecticut PCWestport, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Haffner among 336 ophthalmology physician records in Connecticut
Gregory Haffner, M.D. is one of 336 ophthalmology physician records with a practice address in Connecticut. 76% 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 19% of them.
- NPI issued2006 · 19% of these records are older, 35% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2001 · median 2000 among the 212 with a school on file
- Record last updated2011 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Connecticut
There are 336 ophthalmology physician records in Connecticut.
All 336 in Connecticut → Every provider in Hamden → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Matthew Dombrow, MDHamden, CT 065181376798967
- Andrew Fezza, MDHamden, CT 065181265404164
- Jeffrey Gold, M.D.Hamden, CT 065181013956010
- Alice Kim, MDHamden, CT 065181154523553
- James Martone, MDHamden, CT 065181649242603
- Paul Masi, MDHamden, CT 065181669444105
- James Murphy, M.D.Hamden, CT 065181558653014
- Susel Oropesa, MDHamden, CT 065181992292791
Common questions
What is Gregory Haffner, M.D.'s NPI number?
Gregory Haffner, M.D.'s National Provider Identifier (NPI) is 1407886450, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Haffner, M.D. located?
The NPPES record lists a practice address at 2200 Whitney Ave, Hamden, CT, 06518. Phone: (203) 288-2020. Providers update this record themselves, so call before visiting.
How can I verify Gregory Haffner, M.D.'s license?
NPPES lists Connecticut license number 043419, 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 Gregory Haffner, M.D. prescribe under Medicare Part D?
In 2024, Gregory Haffner, M.D. had 242 Medicare Part D claims for 88 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Gregory Haffner, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.