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DR. ALAIN A. LE GUILLOU M.D.
NPI 1982742565
Pediatrics in Larchmont, NY

Active since February 03, 2007PECOS EnrolledCLIA 33D2203431 · Waiver
2039 PALMER AVE, SUITE 203, LARCHMONT, NY 10538(914) 834-1590(914) 315-6225 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Alain A. Le Guillou M.d. NPPES

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

DR. ALAIN A. LE GUILLOU M.D. (NPI 1982742565) is an individual pediatrics provider in Larchmont, New York, licensed in New York (199443) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and holds a CLIA Waiver certificate valid through March 26, 2027.

NPPES Registry Identity

NPI1982742565
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. ALAIN A. LE GUILLOUCredential: M.D.
Location Address2039 PALMER AVE, SUITE 203Larchmont, NY 10538-2483
Mailing Address2039 Palmer Ave, Suite 203Larchmont, NY 10538-2483 · (914) 834-1590 · Fax (914) 315-6225
Phone(914) 834-1590
Fax(914) 315-6225
Sole ProprietorYes
Enumeration DateFebruary 3, 2007
Last NPPES UpdateMarch 7, 2023
✔ NPI 1982742565 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NY · 199443
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
2039 PALMER AVE, Larchmont, NY 10538
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Other Identifiers 1

Other199443NY · Ny State License

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alain A. Le Guillou M.d. 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 Alain Le Guillou reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Boston Children's Health Physicians, LLP
11 mi
Pediatrics
19 SKYLINE DR OFC 1N-D06
Hawthorne, NY 10532
  • Reassigned Medicare billing, New York enrollment
  • 511 clinicians in this Medicare group
NPI 1467454967 (914) 594-2100

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 33D2203431

Alain Le Guillou MD A Div Of Boston Children's Health Physicians · Larchmont, NY
Active · expires Mar 26, 2027
CLIA Number33D2203431
Laboratory TypePhysician Office
Certificate Effective DateNovember 15, 2022
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorDr. Alain A. Le Guillou
Laboratory Phone(914) 834-1590
Laboratory LocationAlain Le Guillou MD A Div Of Boston Children's Health Physicians2039 Palmer Ave - Suite 203, Larchmont, NY 10538
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10538 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
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 5

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

DR. STEPHANIE LIA PSY.D.
Psychologist
2039 PALMER AVE, SUITE 102
LARCHMONT, NY 10538
Westchester County (914) 837-2685
DR. DORA SAMET ATTERMANN M.D.
Psychiatry & Neurology (Psychiatry)
2039 PALMER AVE, SUITE 204
LARCHMONT, NY 10538
Westchester County (914) 833-1744
PALMS PHYSICAL THERAPY, P.C.
Physical Therapist
2039 PALMER AVE, SUITE 202
LARCHMONT, NY 10538
Westchester County (661) 448-0297
DR. JOEL F LEVY DDS
Dentist (General Practice)
2039 PALMER AVE
LARCHMONT, NY 10538
Westchester County (914) 834-9534
LORNA RAMOSMOREL
Psychiatry & Neurology (Psychiatry)
2039 PALMER AVE, SUITE 102
LARCHMONT, NY 10538
Westchester County (914) 833-3503

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 Alain Le Guillou's NPI number?

The NPI number for Alain Le Guillou is 1982742565. It was assigned to this individual provider in the NPPES registry on February 3, 2007.

Where is Alain Le Guillou located?

Alain Le Guillou practices at 2039 Palmer Ave Suite 203, Larchmont, NY 10538. The listed phone number is (914) 834-1590.

What is Alain Le Guillou's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Alain Le Guillou enrolled in Medicare?

Yes. Alain Le Guillou is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Alain Le Guillou's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alain Le Guillou reassigns Medicare benefits to Boston Children's Health Physicians, LLP (Hawthorne, NY). 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 Alain Le Guillou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Does Alain Le Guillou hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D2203431) is associated with this NPI, valid through March 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Alain Le Guillou was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.