NPPES file of Aug 9, 2026

Louis M. Weiss, MD,MPH

Infectious Disease Physician · Bronx, NY

Louis M. Weiss, MD,MPH is an infectious disease physician with a practice address in Bronx, New York, and NPI 1144310996, issued on Oct 13, 2006. Check the license (New York 162009, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1144310996
Name
Louis M. Weiss
Credential
MD,MPH
Primary taxonomy
Infectious Disease Physician 207RI0200X
License number
162009 NY
Self-reported in NPPES; status is on the state search
Practice location
Montefiore Medical Park, Bronx, NY 10461
Phone
(866) 633-8255
Enumerated
Oct 13, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20070906000106); may accept Medicare assignment
Medical or professional school
Johns Hopkins University School Of Medicine, 1982
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at Montefiore Medical Park

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Steven Berk, MDInternal Medicine Physician1265522031
  2. Henny Billett, MDHematology (Internal Medicine) Physician1689755001
  3. Bruce Cohen, MDDiagnostic Radiology Physician1427141696
  4. Jill Crandall, MDEndocrinology, Diabetes & Metabolism Physician1548359896
  5. Mark Czaja, MDGastroenterology Physician1265522163
  6. Peter Dicpinigaitis, MDCritical Care Medicine (Internal Medicine) Physician1194815993

Verify Louis M. Weiss in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 162009
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

30% more Medicare Part D claims than the average infectious disease physician in 2024

899 Medicare Part D claims for 44 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.

  1. Louis Weiss899
  2. Specialty average689

Most prescribed

  1. Biktarvy100 claims
  2. Tivicay65 claims
  3. Dovato56 claims
  4. Descovy44 claims
  5. Atorvastatin Calcium36 claims
  6. Efavirenz-Emtric-Tenofov Disop34 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): 100 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.

  1. Qualitynot scored (reweighted)
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

One hospital affiliation

  1. Montefiore Medical CenterBronx, NY · Acute Care Hospitals3 of 5 stars

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.

Louis M. Weiss among 970 infectious disease physician records in New York

Louis M. Weiss, MD,MPH is one of 970 infectious disease physician records with a practice address in New York. 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 54% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1982 · median 2002 among the 624 with a school on file
  • Record last updated2007 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Infectious Disease Physician providers in New York

There are 970 infectious disease physician records in New York.

The 8 infectious disease physician records with the nearest ZIP codes

  1. Matthew Akiyama, M.D.Bronx, NY 104611316259419
  2. Arturo Casadevall, MDBronx, NY 104611639268055
  3. Johanna Daily, MDBronx, NY 104611679523187
  4. Marta Feldmesser, MDBronx, NY 104611013098433
  5. Carol HarrisBronx, NY 104611912065046
  6. Dial Hewlett, MDBronx, NY 104611043299894
  7. Julie Hoffman, M.D.Bronx, NY 104611164580981
  8. Fanny Ita Nagy, M.D.Bronx, NY 104611497067383

Common questions

What is Louis M. Weiss, MD,MPH's NPI number?

Louis M. Weiss, MD,MPH's National Provider Identifier (NPI) is 1144310996, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Louis M. Weiss, MD,MPH located?

The NPPES record lists a practice address at Montefiore Medical Park, Bronx, NY, 10461. Phone: (866) 633-8255. Providers update this record themselves, so call before visiting.

How can I verify Louis M. Weiss, MD,MPH's license?

NPPES lists New York license number 162009, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Louis M. Weiss, MD,MPH prescribe under Medicare Part D?

In 2024, Louis M. Weiss, MD,MPH had 899 Medicare Part D claims for 44 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.

What is Louis M. Weiss, MD,MPH's MIPS final score?

The 2023 MIPS final score is 100 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.