Alexander Boris Gelfer, MD.
Pulmonary Disease Physician · Williamsville, NY
Alexander Boris Gelfer, MD. is a pulmonary disease physician with a practice address in Williamsville, New York, and NPI 1689638462, issued on Apr 17, 2006. Check the license (New York 166540-2, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Alexander Boris Gelfer
- Credential
- MD.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- 166540-2 NY
Self-reported in NPPES; status is on the state search - Practice location
- 100 College Parkway, Williamsville, NY 14221
- Phone
- (716) 631-8863
- Enumerated
- Apr 17, 2006
- Record last updated
- Feb 13, 2025
- Fax
- (716) 631-1265
- Medicaid ID
- 01083825 NY
- Medicare enrollment
- Enrolled (PECOS I20050707000800); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,230 in New York → Look up another NPI →
Also registered at 100 College Parkway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bonnie Dugan, ANPCAdult Health Nurse Practitioner1366481657
- Debbra Hadden, ANPAdult Health Nurse Practitioner1356388722
- Pamela Miller, WHNPCGynecology Physician1215110572
- Darren Rath, RPA-CMedical Physician Assistant1558300558
Verify Alexander Boris Gelfer 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 166540-2Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% more Medicare Part D claims than the average pulmonary disease physician in 2024
1,913 Medicare Part D claims for 277 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Montelukast Sodium264 claims
- Prednisone204 claims
- Albuterol Sulfate Hfa202 claims
- Trelegy Ellipta200 claims
- Breo Ellipta119 claims
- Breztri Aerosphere96 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: $2,849.59
126 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 8,806 providers of this specialty with any payment received $5,159.88 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 2 group practices
- Rpci Oncology, PCWilliamsville, NY
- Sisters OF Charity Hospital OF Buffalo New YorkCheektowaga, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Boris Gelfer among 1,230 pulmonary disease physician records in New York
Alexander Boris Gelfer, MD. is one of 1,230 pulmonary disease physician records with a practice address in New York. 87% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 47% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1972 · median 1999 among the 943 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in New York
There are 1,230 pulmonary disease physician records in New York.
All 1,230 in New York → Every provider in Williamsville → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Hartwig Boepple, M.D.Williamsville, NY 142211568426344
- Kristopher Clark, M.D.Williamsville, NY 142211619339439
- Anthony Freundel, MDWilliamsville, NY 142211881658672
- William Gibbons, MDWilliamsville, NY 142211215042700
- Tajuddin Jiva, MD MPH MBAWilliamsville, NY 142211598718983
- Robert Klocke, M.D.Williamsville, NY 142211285750315
- James Lampasso, MDWilliamsville, NY 142211902889090
- Jeffery Neu, MDWilliamsville, NY 142211184608911
Common questions
What is Alexander Boris Gelfer, MD.'s NPI number?
Alexander Boris Gelfer, MD.'s National Provider Identifier (NPI) is 1689638462, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Boris Gelfer, MD. located?
The NPPES record lists a practice address at 100 College Parkway, Williamsville, NY, 14221. Phone: (716) 631-8863. Providers update this record themselves, so call before visiting.
How can I verify Alexander Boris Gelfer, MD.'s license?
NPPES lists New York license number 166540-2, 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 Alexander Boris Gelfer, MD. prescribe under Medicare Part D?
In 2024, Alexander Boris Gelfer, MD. had 1,913 Medicare Part D claims for 277 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.