NPPES file of Aug 9, 2026

Joan G. Lehach, M.D.

Allergy & Immunology (Internal Medicine) Physician · New Rochelle, NY

Joan G. Lehach, M.D. is an allergy & immunology (internal medicine) physician with a practice address in New Rochelle, New York, and NPI 1740241785, issued on Mar 29, 2006. Check the license (New York 176701, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1740241785
Name
Joan G. Lehach
Credential
M.D.
Primary taxonomy
Allergy & Immunology (Internal Medicine) Physician 207RA0201X
License number
176701 NY
Self-reported in NPPES; status is on the state search
Practice location
164 Church St Apt 3K, New Rochelle, NY 10805
Phone
(475) 689-4634
Enumerated
Mar 29, 2006
Record last updated
Jun 1, 2022
Fax
(914) 885-1781
Medicaid ID
01248159 NY
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest allergy & immunology (internal medicine) physician records → All 61 in New York → Look up another NPI →

Verify Joan G. Lehach 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 176701    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

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96% fewer Medicare Part D claims than the average allergy & immunology (internal medicine) physician in 2024

29 Medicare Part D claims, against an average of 789 among the 429 providers of this specialty who prescribed in Part D.

  1. Joan Lehach29
  2. Specialty average789

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.

Joan G. Lehach among 61 allergy & immunology (internal medicine) physician records in New York

Joan G. Lehach, M.D. is one of 61 allergy & immunology (internal medicine) physician records with a practice address in New York. 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 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 48% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2022 · 69% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0201X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Allergy & Immunology (Internal Medicine) Physician providers in New York

There are 61 allergy & immunology (internal medicine) physician records in New York.

All 61 in New York → Every provider in New Rochelle → Allergy & Immunology (Internal Medicine) Physician nationwide →

The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes

  1. Aleena Mahmood, MDMiddletown, NY 109401538785506
  2. Laura Mechanic, MDWhite Plains, NY 106041134128945
  3. Mili ShumWest Harrison, NY 106041407134224
  4. Sherry Farzan, M.D.Great Neck, NY 110211902082431
  5. Lauren Rothstein, M.D.New Hyde Park, NY 110421619395902
  6. Marie Helene Sajous, M.D., M.S.Mount Kisco, NY 105491225176688
  7. Gabriele De VosBronx, NY 104691992863146
  8. Merhunisa Karagic, M.D.Bronx, NY 104611023421682

Common questions

What is Joan G. Lehach, M.D.'s NPI number?

Joan G. Lehach, M.D.'s National Provider Identifier (NPI) is 1740241785, issued on Mar 29, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joan G. Lehach, M.D. located?

The NPPES record lists a practice address at 164 Church St Apt 3K, New Rochelle, NY, 10805. Phone: (475) 689-4634. Providers update this record themselves, so call before visiting.

How can I verify Joan G. Lehach, M.D.'s license?

NPPES lists New York license number 176701, 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 Joan G. Lehach, M.D. prescribe under Medicare Part D?

In 2024, Joan G. Lehach, M.D. had 29 Medicare Part D claims; the average among allergy & immunology (internal medicine) physician prescribers was 789. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.