NPPES file of Aug 9, 2026

Leszek Michalewicz, M.D.

Psychiatry Physician · New Orleans, LA

Leszek Michalewicz, M.D. is a psychiatry physician with a practice address in New Orleans, Louisiana, and NPI 1487718136, issued on Dec 20, 2006. Check the license (Louisiana 025905, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1487718136
Name
Leszek Michalewicz
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
025905 LA
Self-reported in NPPES; status is on the state search
Practice location
1415 Tulane Ave, New Orleans, LA 70112
Phone
(504) 988-2300
Enumerated
Dec 20, 2006
Record last updated
Feb 26, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(504) 988-4270
Medicaid ID
1049409 LA
Medicare enrollment
Enrolled (PECOS I20101023000201); accepts Medicare assignment
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.
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Also registered at 1415 Tulane Ave

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

  1. Matthew Abella, DOStudent in an Organized Health Care Education/Training Program1255035572
  2. Eric Abraham, MDAnesthesiology Physician1639140114
  3. Ibrahim Aburiziq, M.DAnatomic Pathology & Clinical Pathology Physician1134359771
  4. Prateek Adhikari, M.D.Emergency Medicine Physician1083788004
  5. Tanjeev Ahmad, MDStudent in an Organized Health Care Education/Training Program1457091795
  6. Muhammad Ahmed, MDPsychiatry Physician1588724561

Verify Leszek Michalewicz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
    Search for license 025905
    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 Louisiana 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.

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54% fewer Medicare Part D claims than the average psychiatry physician in 2024

462 Medicare Part D claims for 37 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.

  1. Leszek Michalewicz462
  2. Specialty average1,000

Most prescribed

  1. Trazodone Hcl64 claims
  2. Lurasidone Hcl54 claims
  3. Fluoxetine Hcl37 claims
  4. Hydroxyzine Hcl35 claims
  5. Mirtazapine32 claims
  6. Quetiapine Fumarate28 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.

Industry payments in 2024: $371.50

16 payments; by number, the most common kind was food and beverage; the largest payer was Alkermes, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Leszek Michalewicz$371.50
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Marillac Community Health CentersNew Orleans, LA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Leszek Michalewicz among 583 psychiatry physician records in Louisiana

Leszek Michalewicz, M.D. is one of 583 psychiatry physician records with a practice address in Louisiana. 75% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 63% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 48% of these records are
  • Graduated1991 · median 2005 among the 279 with a school on file
  • Record last updated2016 · 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 2084P0800X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

226 psychiatry physician records list a practice address in New Orleans

They are 226 of the 13,668 NPPES records with a practice address in New Orleans, and 583 psychiatry physician records in Louisiana.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Muhammad Ahmed, MDNew Orleans, LA 701121588724561
  2. Jose Artecona, M.D.New Orleans, LA 701121326048315
  3. Helena Costales, M.D.New Orleans, LA 701121932201001
  4. Kathleen Coyle, M.D.New Orleans, LA 701121679672265
  5. Sarah Deland, MDNew Orleans, LA 701121356433973
  6. Marshall Fitz, MDNew Orleans, LA 701121184732299
  7. Maga Jackson-Triche, M.D.New Orleans, LA 701121124075346
  8. Patrick Oneill, MDNew Orleans, LA 701121346352945

Common questions

What is Leszek Michalewicz, M.D.'s NPI number?

Leszek Michalewicz, M.D.'s National Provider Identifier (NPI) is 1487718136, issued on Dec 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Leszek Michalewicz, M.D. located?

The NPPES record lists a practice address at 1415 Tulane Ave, New Orleans, LA, 70112. Phone: (504) 988-2300. Providers update this record themselves, so call before visiting.

How can I verify Leszek Michalewicz, M.D.'s license?

NPPES lists Louisiana license number 025905, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Leszek Michalewicz, M.D. prescribe under Medicare Part D?

In 2024, Leszek Michalewicz, M.D. had 462 Medicare Part D claims for 37 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.

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.