Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

AARON LOUIE MD
NPI 1962962373
Anesthesiology - Pediatric Anesthesiology in Boston, MA

Q: What is Aaron Louie's NPI number?

The NPI number for Aaron Louie is 1962962373. It was assigned to this individual provider in the NPPES registry on March 21, 2019.

Q: What is Aaron Louie's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.

Q: When was this NPI record last updated?

The NPPES record for Aaron Louie was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.

Active since March 21, 2019PECOS Enrolled

300 LONGWOOD AVE, BOSTON, MA 02115(617) 355-6000 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 11, 2026, Jul 12, 2024, Mar 21, 2019 (3 updates tracked since 2019).

On this page

About Aaron Louie Md NPPES

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

AARON LOUIE MD (NPI 1962962373) is an individual pediatric anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (1022704) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1962962373

Entity TypeIndividualMale

Primary Taxonomy207LP3000X

Provider Legal NameAARON LOUIECredential: MD

Location Address300 LONGWOOD AVEBoston, MA 02115-5724

Mailing Address300 Longwood AveBoston, MA 02115-5724 · (617) 355-6000

Phone(617) 355-6000

Sole ProprietorNo

Enumeration DateMarch 21, 2019

Last NPPES UpdateSeptember 11, 20263 updates tracked since enumeration

NPPES CertifiedSeptember 11, 2026

✔ NPI 1962962373 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiology · Pediatric AnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207LP3000X

License✔ Licensed in MA · 1022704

Definition

An anesthesiologist who has had additional skill and experience in and is primarily concerned with the anesthesia, sedation, and pain management needs of infants and children. A pediatric anesthesiologist generally provides services including the evaluation of complex medical problems in infants and children when surgery is necessary, planning and care for children before and after surgery, pain control, anesthesia and sedation for any procedures out of the operating room such as MRI, CT scan, and radiation therapy.

300 LONGWOOD AVE, Boston, MA 02115

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Aaron Louie Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Aaron Louie reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Norton Children's Medical Group, LLC

812 mi

Clinical Genetics (M.D.)

4803 OLYMPIA PARK PLZ STE 1100
Louisville, KY 40241

Reassigned Medicare billing, Kentucky enrollment
Medicare enrollment name: Norton Childrens Medical Group LLC
1,008 clinicians in this Medicare group

NPI 1013559921 (502) 272-5336

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

JULIE ANN HANSEN LCSW

Social Worker (Clinical)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (857) 218-4309

MS. ANNA ROGLIERI

Nurse Practitioner (Psychiatric/Mental Health)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

STEPHEN G. FLYNN M.D.

Anesthesiology (Pediatric Anesthesiology)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

MRS. LAUREN ASHLEY SHARIS P.T., D.P.T

Physical Therapist

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-7216

MS. SOYUN KWAN LICSW

Social Worker (Clinical)

300 LONGWOOD AVE, CHILDREN'S HOSPITAL BOSTON
BOSTON, MA 02115

Suffolk County (617) 355-0567

PUJA BANKA M.D.

Pediatrics

300 LONGWOOD AVE, BADER 203
BOSTON, MA 02115

Suffolk County (617) 355-6363

MR. COURTNEY SULLIVAN FRATTO CPNP

Nurse Practitioner (Pediatrics)

300 LONGWOOD AVE, HUNNEWELL BUILDING 322
BOSTON, MA 02115

Suffolk County (857) 218-4085

DR. ELIZABETH S TAGLAUER M.D., PH.D.

Pediatrics (Neonatal-Perinatal Medicine)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

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 Louie's NPI number?

The NPI number for Aaron Louie is 1962962373. It was assigned to this individual provider in the NPPES registry on March 21, 2019.

Where is Aaron Louie located?

Aaron Louie practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.

What is Aaron Louie's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.

Is Aaron Louie enrolled in Medicare?

Yes. Aaron Louie is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Aaron Louie's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Louie reassigns Medicare benefits to Norton Children's Medical Group, LLC (Louisville, KY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aaron Louie's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Aaron Louie accept?

Health plans from Cigna Healthcare list Aaron Louie as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Aaron Louie was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.