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DR. THOMAS BAYARD O'BARR JR. M.D.
NPI 1255334033
Internal Medicine in Woodstock, GA

Active since May 24, 2005PECOS Enrolled
1192 BUCKHEAD XING STE E, WOODSTOCK, GA 30189(678) 494-4450(678) 494-6265 Get Directions Write a Review

NPPES record last updated: January 29, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Thomas Bayard O'barr Jr. M.d. NPPES

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

DR. THOMAS BAYARD O'BARR JR. M.D. (NPI 1255334033) is an individual internal medicine provider in Woodstock, Georgia, licensed in Georgia (024472) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255334033
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. THOMAS BAYARD O'BARR JR.Credential: M.D.
Location Address1192 BUCKHEAD XING STE EWoodstock, GA 30189-4255
Mailing Address1192 Buckhead Xing Ste EWoodstock, GA 30189-4255 · (678) 494-4450 · Fax (678) 494-6265
Phone(678) 494-4450
Fax(678) 494-6265
Sole ProprietorYes
Enumeration DateMay 24, 2005
Last NPPES UpdateJanuary 29, 2018
✔ NPI 1255334033 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in GA · 024472
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1192 BUCKHEAD XING STE E, Woodstock, GA 30189
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Thomas Bayard O'barr Jr. 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 Thomas O'barr reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

North Georgia Internal Medicine, PC
Same address
Internal Medicine
1192 BUCKHEAD XING, SUITE E
Woodstock, GA 30189
  • Reassigned Medicare billing, Georgia enrollment
  • 6 clinicians in this Medicare group
NPI 1619996907 (678) 494-4450

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 30189 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
$130.64 typical visit price
range $56.84 – $172.43
Typical copayment $32.66 (range $14.21 – $43.10)
Most-billed visit code 99204
Established Patient
$100.20 typical visit price
range $18.22 – $140.40
Typical copayment $25.05 (range $4.55 – $35.10)
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.

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 O'barr's NPI number?

The NPI number for Thomas O'barr is 1255334033. It was assigned to this individual provider in the NPPES registry on May 24, 2005.

Where is Thomas O'barr located?

Thomas O'barr practices at 1192 Buckhead Xing Ste E, Woodstock, GA 30189. The listed phone number is (678) 494-4450.

What is Thomas O'barr's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Thomas O'barr enrolled in Medicare?

Yes. Thomas O'barr is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas O'barr's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas O'barr reassigns Medicare benefits to North Georgia Internal Medicine, PC (Woodstock, GA). 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 Thomas O'barr's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Thomas O'barr was last updated on January 29, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.