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AARON WESTREICH M.D.
NPI 1801329735
Allergy & Immunology in Valley Stream, NY

Active since April 07, 2017PECOS EnrolledAccepts Medicare Assignment
91.28/100
CMS Quality Rating
70 E SUNRISE HWY STE 411, VALLEY STREAM, NY 11581(516) 355-0505(516) 355-2055 Get Directions Write a Review

NPPES record last updated: June 23, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 23, 2025, Jul 12, 2023, Aug 19, 2022 and 1 more (4 updates tracked since 2020).

About Aaron Westreich M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

AARON WESTREICH M.D. (NPI 1801329735) is an individual allergy & immunology provider in Valley Stream, New York, licensed in New York (315428) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS and is a graduate of University Of Maryland School Of Medicine (2017).

NPPES Registry Identity

NPI1801329735
Entity TypeIndividualMale
Primary Taxonomy207K00000X
Provider Legal NameAARON WESTREICHCredential: M.D.
Location Address70 E SUNRISE HWY STE 411Valley Stream, NY 11581-1233
Mailing Address660 White Plains Rd Ste 400Tarrytown, NY 10591-5107 · (914) 984-2546
Phone(516) 355-0505
Fax(516) 355-2055
Sole ProprietorNo
Medical School CMSUniversity Of Maryland School Of MedicineGraduated 2017
Enumeration DateApril 7, 2017
Last NPPES UpdateJune 23, 20254 updates tracked since enumeration
NPPES CertifiedJune 23, 2025
✔ NPI 1801329735 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in NY · 315428
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Also ListedPediatricsTaxonomy 208000000X · License DR.0063992 (CO)
70 E SUNRISE HWY STE 411, Valley Stream, NY 11581
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Aaron Westreich M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1052658283
PECOS Enrollment IDI20220914002959
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Test for allergy using allergenic extract 95004
An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.
2,252 services38 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
38 services38 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
38 services25 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
32 services32 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
12 services12 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.28/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality84.16
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JAVID NASSIRI M.D.
Otolaryngology
70 E SUNRISE HWY STE 411
VALLEY STREAM, NY 11581
Nassau County (516) 355-0505

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Aaron Westreich's NPI number?

The NPI number for Aaron Westreich is 1801329735. It was assigned to this individual provider in the NPPES registry on April 7, 2017.

Where is Aaron Westreich located?

Aaron Westreich practices at 70 E Sunrise Hwy Ste 411, Valley Stream, NY 11581. The listed phone number is (516) 355-0505.

What is Aaron Westreich's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Aaron Westreich enrolled in Medicare?

Yes. Aaron Westreich is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Aaron Westreich was last updated on June 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.