Louis Leff
Internal Medicine Physician · Pittsburgh, PA
Louis Leff is an internal medicine physician with a practice address in Pittsburgh, Pennsylvania, and NPI 1962505537, issued on Sep 7, 2006. Check the license (Pennsylvania MD036723E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Louis Leff
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD036723E PA
Self-reported in NPPES; status is on the state search - Practice location
- 532 S Aiken Ave, Pittsburgh, PA 15232
- Phone
- (412) 621-5091
- Enumerated
- Sep 7, 2006
- Record last updated
- Apr 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040130000226); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1985
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 532 S Aiken Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kara Albrecht, PASurgical Physician Assistant1508019878
- Peter Berkowitz, M.D.Specialist1235128752
- Andrea Brown, PA-CPhysician Assistant1457354193
- Frank Brown, MDInternal Medicine Physician1922070622
- Jessica Davis, CRNPFamily Nurse Practitioner1932466976
- Jamie DeangelisAdult Health Nurse Practitioner1225361124
Verify Louis Leff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD036723ECheck 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% more Medicare Part D claims than the average internal medicine physician in 2024
3,750 Medicare Part D claims for 348 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 114 claims were for opioids.
Most prescribed
- Atorvastatin Calcium274 claims
- Lisinopril144 claims
- Amlodipine Besylate138 claims
- Losartan Potassium133 claims
- Metformin Hcl109 claims
- Hydrochlorothiazide105 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): 78.5 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
- Upmc Community Medicine IncPittsburgh, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Louis Leff among 7,300 internal medicine physician records in Pennsylvania
Louis Leff is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 64% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1985 · median 2008 among the 4,208 with a school on file
- Record last updated2021 · 56% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
750 internal medicine physician records list a practice address in Pittsburgh
They are 750 of the 28,866 NPPES records with a practice address in Pittsburgh, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Pittsburgh → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Frank Brown, MDPittsburgh, PA 152321922070622
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- Ellen Dillinger, MDPittsburgh, PA 152321326141995
- Michelina Fato, M.D.Pittsburgh, PA 152321790748721
- George Gleeson, MDPittsburgh, PA 152321881797454
- Thomas Grau, M.D.Pittsburgh, PA 152321366476889
- Bernadette HarrisPittsburgh, PA 152321700878774
- Elmer Holzinger, MDPittsburgh, PA 152321841393428
Common questions
What is Louis Leff's NPI number?
Louis Leff's National Provider Identifier (NPI) is 1962505537, issued on Sep 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Louis Leff located?
The NPPES record lists a practice address at 532 S Aiken Ave, Pittsburgh, PA, 15232. Phone: (412) 621-5091. Providers update this record themselves, so call before visiting.
How can I verify Louis Leff's license?
NPPES lists Pennsylvania license number MD036723E, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Louis Leff prescribe under Medicare Part D?
In 2024, Louis Leff had 3,750 Medicare Part D claims for 348 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Louis Leff's MIPS final score?
The 2023 MIPS final score is 78.5 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.