David Joel Leffell, MD
Dermatology Physician · New Haven, CT
David Joel Leffell, MD is a dermatology physician with a practice address in New Haven, Connecticut, and NPI 1518940410, issued on Nov 23, 2005. Check the license (Connecticut 025346, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- David Joel Leffell
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 025346 CT
Self-reported in NPPES; status is on the state search - Practice location
- 40 Temple St, New Haven, CT 06510
- Phone
- (203) 785-3466
- Enumerated
- Nov 23, 2005
- Record last updated
- Feb 13, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (203) 785-5256
- Medicaid ID
- 001253468 CT
- Medicare enrollment
- Enrolled (PECOS I20100820000017); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 253 in Connecticut → Look up another NPI →
Also registered at 40 Temple St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Harry Aslanian, MDGastroenterology Physician1295718401
- Ashley Beesley, FNPFamily Nurse Practitioner1629834585
- Jennifer Bennick, APRNFamily Nurse Practitioner1770886764
Verify David Joel Leffell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 025346Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average dermatology physician in 2024
196 Medicare Part D claims for 136 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
Most prescribed
- Mupirocin77 claims
- Cephalexin45 claims
- Erythromycin13 claims
- Hydrocortisone11 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 one group practice
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Joel Leffell among 253 dermatology physician records in Connecticut
David Joel Leffell, MD is one of 253 dermatology physician records with a practice address in Connecticut. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1981 · median 2004 among the 180 with a school on file
- Record last updated2009 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Connecticut
There are 253 dermatology physician records in Connecticut.
All 253 in Connecticut → Every provider in New Haven → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Jean Bolognia, MDNew Haven, CT 065101942291331
- Irwin Braverman, MDNew Haven, CT 065101669453445
- Christopher Bunick, M.D., PH.D.New Haven, CT 065101457527442
- Sean Christensen, MDNew Haven, CT 065101962685073
- Shawn Cowper, MDNew Haven, CT 065101396736773
- Richard Edelson, MDNew Haven, CT 065101639160013
- Michael Girardi, MDNew Haven, CT 065101154302842
- Peter Heald, MDNew Haven, CT 065101376534784
Common questions
What is David Joel Leffell, MD's NPI number?
David Joel Leffell, MD's National Provider Identifier (NPI) is 1518940410, issued on Nov 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David Joel Leffell, MD located?
The NPPES record lists a practice address at 40 Temple St, New Haven, CT, 06510. Phone: (203) 785-3466. Providers update this record themselves, so call before visiting.
How can I verify David Joel Leffell, MD's license?
NPPES lists Connecticut license number 025346, 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 David Joel Leffell, MD prescribe under Medicare Part D?
In 2024, David Joel Leffell, MD had 196 Medicare Part D claims for 136 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is David Joel Leffell, 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.