David K. Hahn, MD
Neurology Physician · Greenwich, CT
David K. Hahn, MD is a neurology physician with a practice address in Greenwich, Connecticut, and NPI 1053625459, issued on Jul 28, 2010. Check the license (Connecticut 54629, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- David K. Hahn
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 54629 CT
ME134710 FL
4301114366 MI
19408 NH
Self-reported in NPPES; status is on the state search - Practice location
- 115 Mason St Ste 1, Greenwich, CT 06830
- Phone
- (203) 276-4464
- Enumerated
- Jul 28, 2010
- Record last updated
- Oct 28, 2025
- Fax
- (203) 276-4468
- Medicaid ID
- 3118697 NH
- Medicare enrollment
- Enrolled (PECOS I20151106001648); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 2008
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 345 in Connecticut → Look up another NPI →
Also registered at 115 Mason St Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carolyn Hahn, M.D.Psychiatry Physician1750543864
Verify David K. Hahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 54629Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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).
3 hospitals and group practices
- Midstate Medical CenterMeriden, CT · Acute Care Hospitals4 of 5 stars
- East Post Road Medical Services PCWhite Plains, NY
- The Hospital OF Central Connecticut AT New Britain General And BradleyNew Britain, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
David K. Hahn among 345 neurology physician records in Connecticut
David K. Hahn, MD is one of 345 neurology physician records with a practice address in Connecticut. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 54% of them.
- NPI issued2010 · 54% of these records are older, 41% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 2009 among the 216 with a school on file
- Record last updated2025 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Connecticut
There are 345 neurology physician records in Connecticut.
All 345 in Connecticut → Every provider in Greenwich → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Matthew McConnell, MDGreenwich, CT 068301699018044
- Andrew Michalak, M.D.Greenwich, CT 068301720440985
- James Morris, M.D. PH.D.Greenwich, CT 068301215969985
- Frederick Nahm, MDGreenwich, CT 068301548242647
- Jennifer Werely, M.D.Greenwich, CT 068301225265028
- Lori Jensen, MDGreenwich, CT 068311619934130
- Stanley Resor, M.D.Greenwich, CT 068311205947306
- Alice Rusk, M.D.Greenwich, CT 068311508971318
Common questions
What is David K. Hahn, MD's NPI number?
David K. Hahn, MD's National Provider Identifier (NPI) is 1053625459, issued on Jul 28, 2010. An NPI identifies a provider in billing; it is not a license.
Where is David K. Hahn, MD located?
The NPPES record lists a practice address at 115 Mason St Ste 1, Greenwich, CT, 06830. Phone: (203) 276-4464. Providers update this record themselves, so call before visiting.
How can I verify David K. Hahn, MD's license?
NPPES lists Connecticut license number 54629, 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.
What is David K. Hahn, MD'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.