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JOHN MICHAEL HALWIG MD
NPI 1841230760
Allergy & Immunology - Allergy in Austell, GA

Active since June 08, 2006PECOS Enrolled
1620 MULKEY RD, STE 100, AUSTELL, GA 30106(770) 953-3331(770) 739-9609 Get Directions Write a Review

NPPES record last updated: November 12, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 12, 2020, Nov 5, 2020, Feb 26, 2020 (3 updates tracked since 2020).

About John Michael Halwig Md NPPES

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

JOHN MICHAEL HALWIG MD (NPI 1841230760) is an individual allergy provider in Austell, Georgia, licensed in Georgia (27558) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Douglasville.

NPPES Registry Identity

NPI1841230760
Entity TypeIndividualMale
Primary Taxonomy207KA0200X
Provider Legal NameJOHN MICHAEL HALWIGCredential: MD
Location Address1620 MULKEY RD, STE 100Austell, GA 30106
Mailing Address8200 Roberts Dr Ste 450Sandy Springs, GA 30350-4115 · (770) 952-8612 · Fax (678) 803-6944
Phone(770) 953-3331
Fax(770) 739-9609
Sole ProprietorNo
Enumeration DateJune 8, 2006
Last NPPES UpdateNovember 12, 20203 updates tracked since enumeration
NPPES CertifiedNovember 12, 2020
✔ NPI 1841230760 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207KA0200X
License✔ Licensed in GA · 27558
Definition
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee
1620 MULKEY RD, Austell, GA 30106
Open in Google Maps ↗

Secondary Practice Location 1

Location 14645 Timber Ridge Dr Ste 160Douglasville, GA 30135-7542 · Phone (770) 953-3331 · Fax (770) 942-7696

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John Michael Halwig 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.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Nebulizer, with compressor E0570
DME-Other DME · category DE000N
1 supplier19 claims19 services$3.21 avg. paid by Medicare
Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg J1569
Treatment-Injections and Infusions (nononcologic) · category RI008N
3 suppliers27 claims4,800 services$35.65 avg. paid by Medicare
Services, supplies and accessories used in the home under the medicare intravenous immune globulin (ivig) demonstration Q2052
Treatment-Chemotherapy · category RH012N
1 supplier12 claims12 services$309.88 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 4

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

DR. WILLIAM E CARROLL D.D.S.
Dentist
1620 MULKEY RD, SUITE 200
AUSTELL, GA 30106
Cobb County (770) 941-5111
MRS. MARY ROSE LOCKE
Nurse Practitioner (Family)
1620 MULKEY RD, STE 100
AUSTELL, GA 30106
Cobb County (770) 953-3331
SUSAN J BERKOWITZ FNP-BC
Nurse Practitioner
1620 MULKEY RD, SUITE 100
AUSTELL, GA 30106
Cobb County (770) 948-3774
MARICELIS H ARMSTRONG MD
Allergy & Immunology
1620 MULKEY RD, STE 100
AUSTELL, GA 30106
Cobb County (770) 948-3774

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 John Halwig's NPI number?

The NPI number for John Halwig is 1841230760. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is John Halwig located?

John Halwig practices at 1620 Mulkey Rd Ste 100, Austell, GA 30106. The listed phone number is (770) 953-3331.

What is John Halwig's specialty?

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

Is John Halwig enrolled in Medicare?

Yes. John Halwig is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for John Halwig was last updated on November 12, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.