Benjamin David Gallagher, MD
Internal Medicine Physician · New Haven, CT
Benjamin David Gallagher, MD is an internal medicine physician with a practice address in New Haven, Connecticut, and NPI 1578958005, issued on Apr 1, 2015. Check the license (Connecticut 61118, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Benjamin David Gallagher
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 61118 CT
Self-reported in NPPES; status is on the state search - Practice location
- 150 Sargent Dr, New Haven, CT 06511
- Phone
- (203) 503-3000
- Enumerated
- Apr 1, 2015
- Record last updated
- Dec 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180716002340); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
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Verify Benjamin David Gallagher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 61118Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,273 Medicare Part D claims for 193 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 88 claims were for opioids.
Most prescribed
- Atorvastatin Calcium83 claims
- Albuterol Sulfate Hfa69 claims
- Amlodipine Besylate68 claims
- Rosuvastatin Calcium67 claims
- Ozempic62 claims
- Fluticasone Propionate60 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Cornell Scott Hill Health CorporationNew Haven, CT
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin David Gallagher among 2,623 internal medicine physician records in Connecticut
Benjamin David Gallagher, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 74% of them.
- NPI issued2015 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · median 2004 among the 1,646 with a school on file
- Record last updated2020 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
329 internal medicine physician records list a practice address in New Haven
They are 329 of the 9,793 NPPES records with a practice address in New Haven, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in New Haven → Internal Medicine Physician nationwide →
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- Judy Kleinstein, MDNew Haven, CT 065111831187319
- Robert Linden, MDNew Haven, CT 065111841283736
Common questions
What is Benjamin David Gallagher, MD's NPI number?
Benjamin David Gallagher, MD's National Provider Identifier (NPI) is 1578958005, issued on Apr 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin David Gallagher, MD located?
The NPPES record lists a practice address at 150 Sargent Dr, New Haven, CT, 06511. Phone: (203) 503-3000. Providers update this record themselves, so call before visiting.
How can I verify Benjamin David Gallagher, MD's license?
NPPES lists Connecticut license number 61118, 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 Benjamin David Gallagher, MD prescribe under Medicare Part D?
In 2024, Benjamin David Gallagher, MD had 2,273 Medicare Part D claims for 193 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Benjamin David Gallagher, MD's MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. 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.