THOMAS CHACKO M.D. P.C
NPI 1669986709
Allergy & Immunology - Allergy in Alpharetta, GA

Active since November 28, 2017
3905 BROOKSIDE PKWY STE 203, ALPHARETTA, GA 30022(678) 668-4688 Get Directions Write a Review

NPPES record last updated: August 25, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 20, 2018, Jun 16, 2018, Nov 28, 2017 (3 updates tracked since 2017).

About Thomas Chacko M.d. P.c NPPES

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

THOMAS CHACKO M.D. P.C (NPI 1669986709), doing business as Chacko Allergy, is a healthcare organization registered as an allergy in Alpharetta, Georgia and active in the NPI registry since November 2017. The organization lists Usha Mariam Chacko, Practice Manager, as its authorized official.

NPPES Registry Identity

NPI1669986709
Entity TypeOrganization
Primary Taxonomy207KA0200X
Legal Business NameTHOMAS CHACKO M.D. P.C
Location Address3905 BROOKSIDE PKWY STE 203Alpharetta, GA 30022-4425
Mailing Address3905 Brookside Pkwy Ste 203Alpharetta, GA 30022-4425 · (678) 668-4688
Organization SubpartNo
Authorized OfficialUsha Mariam ChackoPractice Manager · (678) 668-4688
Enumeration DateNovember 28, 2017
Last NPPES UpdateAugust 25, 20253 updates tracked since enumeration
NPPES CertifiedAugust 25, 2025
✔ NPI 1669986709 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207KA0200X
Definition
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee
3905 BROOKSIDE PKWY STE 203, Alpharetta, GA 30022

Other Names 1

Doing Business AsChacko Allergy

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas Chacko M.d. P.c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Thomas Chacko M.D. P.C, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Allergy/Immunology
NPI 1235636424
3905 BROOKSIDE PKWY STE 203
Alpharetta, GA 30022
(678) 688-4688
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1154952356
3905 BROOKSIDE PKWY STE 203
Alpharetta, GA 30022
(678) 668-4688
✔ PECOSSame address
Allergy/Immunology
NPI 1356443089
3905 BROOKSIDE PKWY STE 203
Alpharetta, GA 30022
(267) 226-3181
✔ PECOSSame address
Allergy/Immunology
NPI 1053817536
3905 BROOKSIDE PKWY STE 203
Alpharetta, GA 30022
(678) 668-4688
✔ PECOSSame address

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

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 Thomas Chacko M.D. P.C's NPI number?

The NPI number for Thomas Chacko M.D. P.C is 1669986709. It was assigned to this organization in the NPPES registry on November 28, 2017. The provider is doing business as Chacko Allergy.

Where is Thomas Chacko M.D. P.C located?

Thomas Chacko M.D. P.C is located at 3905 Brookside Pkwy Ste 203, Alpharetta, GA 30022. The listed phone number is (678) 668-4688.

What is Thomas Chacko M.D. P.C's specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Is Thomas Chacko M.D. P.C enrolled in Medicare?

Yes. Thomas Chacko M.D. P.C is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Thomas Chacko M.D. P.C?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Thomas Chacko M.D. P.C. A 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 the clinician's services. The largest specialties are Allergy/Immunology (3) and Nurse Practitioner (1). Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Thomas Chacko M.D. P.C accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 28 other insurers list Thomas Chacko M.D. P.C 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 Thomas Chacko M.D. P.C was last updated on August 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.