Aaron Westreich, M.D.
Allergy & Immunology Physician · Valley Stream, NY
Aaron Westreich, M.D. is an allergy & immunology physician with a practice address in Valley Stream, New York, and NPI 1801329735, issued on Apr 7, 2017. Check the license (New York 315428, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Aaron Westreich
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 315428 NY
DR.0063992 CO
Self-reported in NPPES; status is on the state search - Practice location
- 70 E Sunrise Hwy Ste 411, Valley Stream, NY 11581
- Phone
- (516) 355-0505
- Enumerated
- Apr 7, 2017
- Record last updated
- Jun 23, 2025
- Fax
- (516) 355-2055
- Medicare enrollment
- Enrolled (PECOS I20220914002959); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2017
- Entity
- Type 1 · individual
Also registered at 70 E Sunrise Hwy Ste 411
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Javid Nassiri, M.D.Otolaryngology Physician1083672042
Verify Aaron Westreich 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 315428Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
313 Medicare Part D claims for 107 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Fluticasone Propionate112 claims
- Albuterol Sulfate Hfa35 claims
- Azelastine Hcl26 claims
- Ipratropium Bromide16 claims
- Epinephrine12 claims
- Triamcinolone Acetonide12 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): 91.3 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,116.34
32 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 2,496 providers of this specialty with any payment received $8,321.81 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
- Ent And Allergy Associates LLPYonkers, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allergy & Immunology Physician providers in New York
There are 311 allergy & immunology physician records in New York.
Other allergy & immunology physician records in New York
- Manar Abdalgani, MBBSNew York, NY1154671873
- Babatunde Adeyemi, M.D.Brooklyn, NY1447205836
- Thomas Adler, M.D.Rochester, NY1154361442
- Shradha Agarwal, MDNew York, NY1740320126
- Mohammad Akhtaruzzaman, MDCanton, NY1891840625
- Sharzad Alagheband, M.DWilliston Park, NY1518371830
- Robert Alessi, MDRome, NY1518959568
- Ama Alexis, M.D.New York, NY1700978681
- Daryl Altman, MDHicksville, NY1538167648
- Thessaloniki Angelakos, MDScarsdale, NY1114094083
Common questions
What is Aaron Westreich, M.D.'s NPI number?
Aaron Westreich, M.D.'s National Provider Identifier (NPI) is 1801329735, issued on Apr 7, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Westreich, M.D. located?
The NPPES record lists a practice address at 70 E Sunrise Hwy Ste 411, Valley Stream, NY, 11581. Phone: (516) 355-0505. Providers update this record themselves, so call before visiting.
How can I verify Aaron Westreich, M.D.'s license?
NPPES lists New York license number 315428, 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 Aaron Westreich, M.D. prescribe under Medicare Part D?
In 2024, Aaron Westreich, M.D. had 313 Medicare Part D claims for 107 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Aaron Westreich, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.3 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.