J Allergy Clin Immunol Pract
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Dr. Aaron A. Westreich, MD
NPI1801329735PAC ID1052658283
- Medicare services, 2024
- 2,372
- Medicare patients, 2024
- 95
- Part D claims, 2024
- 313
- Publications
- 1
- MIPS score, 2024
- 94
- Practice address
- 401 Franklin Ave, Franklin Square, NY 11010
- Practice phone
- Call (914) 333-5800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ENT and Allergy Associates
Franklin Square, New York
Find Dr. Westreich's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Aaron A. Westreich is an allergist and immunologist in Franklin Square, New York
Dr. Westreich practices at ENT and Allergy Associates in Franklin Square, New York.
Dr. Westreich's NPI, 1801329735, was assigned on April 7, 2017. Dr. Westreich graduated from University of Maryland School of Medicine in 2017. Dr. Westreich holds New York license 315428.
NPI and contact details
- NPI
- 1801329735NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052658283
- NPI enumeration date
- April 7, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (914) 333-5800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Aaron A. Westreich practices at ENT and Allergy Associates in Franklin Square, New York
Dr. Westreich's primary practice is ENT and Allergy Associates, at 401 Franklin Ave, Franklin Square, NY 11010 in Nassau County. The practice phone is (914) 333-5800.
- ENT and Allergy Associates401 Franklin Ave, Franklin Square, NY 11010 · Nassau CountyPhone(914) 333-5800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Aaron A. Westreich is affiliated with 2 sites of care and 1 medical group
Dr. Westreich's primary practice is ENT and Allergy Associates in Franklin Square, New York. The medical group on file is ENT and Allergy Associates. Dmand AI also links Dr. Westreich to 1 more group practice or clinic, named with a free account.
ENT and Allergy AssociatesPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Aaron A. Westreich's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Westreich practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ENT and Allergy Associates | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Aaron A. Westreich is one of 250 allergists and immunologists in New York
Allergy and immunology is Dr. Westreich's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dmand AI has Dr. Westreich's licenses on file in 2 states: New York and Colorado.
Specialties and state licenses
- Allergy and immunology, New YorkPrimary
- Pediatrics, Colorado
Allergists and immunologists near Dr. Westreich
Counts of allergists and immunologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Aaron A. Westreich billed Medicare for 2,372 services in 2024
CMS data shows 2,372 Medicare services from Dr. Westreich across 5 procedure codes in 2024, for 95 Medicare patients. Medicare paid $22,902 for them. Every service was in an office.
Medicare services, 20242,372
Medicare patients95
Paid by Medicare$22,902
Procedure codes5
Dr. Westreich's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 2,4092024: 2,2527%
- Office and hospital visits
- 2023: 1002024: 12020%
Dr. Westreich compared with the New York median for allergists and immunologists, 2024
- Dr. Westreich
- New York median
- Medicare services
- 2,372vs 1,0172.3 times
- Medicare patients
- 95vs 97Close to median
- Part D claims
- 235vs 2226% above
Medians across 249 allergists and immunologists in New York with Dmand AI profiles that report each measure.
Dr. Westreich's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Westreich and other allergists and immunologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Aaron A. Westreich treated 95 Medicare patients in 2024, average age 72
CMS counts 95 Medicare patients who saw Dr. Westreich in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 0.94, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Westreich's median patient age at 43, with 60% women.
Medicare patients, 202495
Average age72
Average risk score0.94
Also on Medicaid18%
Dr. Westreich's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Westreich's Medicare patients by sex, 2024
- Women5558%
- Men4042%
Chronic conditions among Dr. Westreich's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes35%
- Anxiety28%
- Ischemic heart disease26%
- Asthma22%
- Chronic kidney disease18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Westreich's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 43
Patient panel by sex, all payers
- Women60%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Aaron A. Westreich wrote 313 Medicare Part D claims in 2024
In 2024, Dr. Westreich wrote 313 Medicare Part D claims for 107 patients. 72% of them were for generic drugs. CMS names the drug for 235 of them, across 8 drugs with 11 or more claims each, at $47,402 in total drug cost. In 2023, CMS named 133 claims across 4 drugs.
Part D claims, 2024313
Drugs named by CMS8
Total drug cost$47,402
Part D patients107
Dr. Westreich's Part D claims by kind of drug, 2024
- Generic225 claims72%
- Brand-name88 claims28%
Dr. Westreich's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1332024: 23577%
Drugs named by CMS: 8 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Aaron A. Westreich scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Westreich for performance year 2024, reported as part of a group. Dr. Westreich accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Westreich's MIPS scores, performance year 2024
- 94of 100Final score
- 89.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Aaron A. Westreich has 1 publication on record
Dmand AI links 1 paper to Dr. Westreich in 2023. Dr. Westreich's most frequent co-author is Michael Ephraim Wechsler, MD.
Papers1
Dr. Westreich's most frequent co-authors
Recent publications by Dr. Westreich
See who Dr. Westreich researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Westreich works with, so you can find a warm path to the right allergists and immunologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Aaron A. Westreich received $2,905 in industry payments from 2020 to 2025
CMS Open Payments shows 91 general payments to Dr. Westreich from 15 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $1,240.
General payments to Dr. Westreich by program year, 2020 to 2025
Companies that paid Dr. Westreich the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Aaron A. Westreich graduated from University of Maryland School of Medicine
Dr. Westreich graduated from University of Maryland School of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Aaron A. Westreich's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Aaron A. Westreich
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Aaron A. Westreich's NPI number?
Dr. Aaron A. Westreich's NPI number is 1801329735. It was assigned on April 7, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Aaron A. Westreich?
Dr. Aaron A. Westreich is an allergist and immunologist in Franklin Square, New York. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Aaron A. Westreich practice?
Dr. Westreich practices at 401 Franklin Ave, Franklin Square, NY 11010. Dr. Westreich's primary practice is ENT and Allergy Associates in Franklin Square, New York. Dmand AI also links Dr. Westreich to 1 group practice or clinic.
What is Dr. Aaron A. Westreich's office phone number?
The practice phone on file for Dr. Westreich is (914) 333-5800.
What is Dr. Aaron A. Westreich's medical license number?
Dr. Westreich holds New York license 315428, one of the licenses on file in 2 states.
Which states has Dr. Aaron A. Westreich been licensed in?
Dmand AI has state licenses on file for Dr. Westreich in New York and Colorado.
What medical group is Dr. Aaron A. Westreich part of?
Dr. Westreich is linked to ENT and Allergy Associates.
Does Dr. Aaron A. Westreich accept Medicare?
Yes. CMS data shows Dr. Westreich billed Medicare for 2,372 services in 2024, and Dr. Westreich accepts Medicare assignment.
What is Dr. Aaron A. Westreich's MIPS score?
Dr. Westreich's MIPS final score for performance year 2024 is 94 out of 100, reported as part of a group.
How many Medicare patients does Dr. Aaron A. Westreich see?
CMS counts 95 Medicare patients who saw Dr. Westreich in 2024, with an average age of 72.
Show 7 more questionsShow fewer questions
What services does Dr. Aaron A. Westreich bill to Medicare?
In 2024, Dr. Westreich's most billed Medicare services were allergy test or treatment (95004), office visit, new patient (99203) and office visit, established patient (99214).
Where did Dr. Aaron A. Westreich go to medical school?
Dr. Westreich graduated from University of Maryland School of Medicine in 2017.
What drugs does Dr. Aaron A. Westreich prescribe most?
In 2024 Medicare Part D data, Dr. Westreich's most prescribed drugs by claims were Fluticasone Propionate, Albuterol Sulfate Hfa and Azelastine HCl.
Has Dr. Aaron A. Westreich received payments from drug or device companies?
CMS Open Payments shows $2,905 in general payments to Dr. Westreich from 15 companies from 2020 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Aaron A. Westreich been practicing?
Dr. Westreich graduated from medical school in 2017, 9 years ago.
Does Dr. Aaron A. Westreich do research?
Dmand AI links 1 publication to Dr. Westreich.
Who does Dr. Aaron A. Westreich publish with?
Dr. Westreich's most frequent co-authors are Michael Ephraim Wechsler, MD (1 shared paper).
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