Glenn Legler, M.D.
Internal Medicine Physician · Mahopac, NY
Glenn Legler, M.D. is an internal medicine physician with a practice address in Mahopac, New York, and NPI 1578540886, issued on Dec 28, 2005. Check the license (New York 175127, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Glenn Legler
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 175127 NY
Self-reported in NPPES; status is on the state search - Practice location
- 888 Route 6, Mahopac, NY 10541
- Phone
- (845) 628-1492
- Enumerated
- Dec 28, 2005
- Record last updated
- Jan 28, 2026
- Fax
- (855) 703-7570
- Medicaid ID
- 01208502 NY
- Medicare enrollment
- Enrolled (PECOS I20100921000279); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 1987
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 888 Route 6
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Usha Veeramachaneni, M.D.Pediatrics Physician1295831881
- Julieann Waclawski, NPPediatric Nurse Practitioner1649449331
Verify Glenn Legler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 175127Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% more Medicare Part D claims than the average internal medicine physician in 2024
5,394 Medicare Part D claims for 554 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 125 claims were for opioids.
Most prescribed
- Atorvastatin Calcium406 claims
- Rosuvastatin Calcium341 claims
- Amlodipine Besylate314 claims
- Losartan Potassium208 claims
- Levothyroxine Sodium199 claims
- Metoprolol Succinate168 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: $773.08
36 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Northern Medical Group, PLLCBrewster, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Glenn Legler among 12,067 internal medicine physician records in New York
Glenn Legler, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% 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, 92% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1987 · median 2002 among the 7,221 with a school on file
- Record last updated2026 · 61% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in New York
There are 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Mahopac → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Carl Koenigsmann, M.D.Mahopac, NY 105411134383409
- Susy Abraham, MDMamaroneck, NY 105431609998921
- Gina Antiaris, DVMMamaroneck, NY 105431689230369
- David Ben-Meir, M.D, M.P.HMamaroneck, NY 105431730468547
- Seth Leven, M.D.Mamaroneck, NY 105431588805840
- Barrie Levitt, M.D.Mamaroneck, NY 105431558665380
- Steven Pappas, M.D.Mamaroneck, NY 105431992748826
- Laurie Posner, MDMamaroneck, NY 105431801948773
Common questions
What is Glenn Legler, M.D.'s NPI number?
Glenn Legler, M.D.'s National Provider Identifier (NPI) is 1578540886, issued on Dec 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Glenn Legler, M.D. located?
The NPPES record lists a practice address at 888 Route 6, Mahopac, NY, 10541. Phone: (845) 628-1492. Providers update this record themselves, so call before visiting.
How can I verify Glenn Legler, M.D.'s license?
NPPES lists New York license number 175127, 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 Glenn Legler, M.D. prescribe under Medicare Part D?
In 2024, Glenn Legler, M.D. had 5,394 Medicare Part D claims for 554 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.