WILLIAM THOMAS CALLAHAN (MD) – Specialist, NPI 1356344535

WILLIAM THOMAS CALLAHAN (MD) is a healthcare provider. based in Gainesville, Georgia. specializing in Specialist. They hold the professional credentials MD. They hold a License No. 14469 (GA). The NPI Number for WILLIAM THOMAS CALLAHAN (MD) is 1356344535

Main info

Male
Name
WILLIAM THOMAS CALLAHAN (MD)
NPI
1356344535
Phone
(770) 536-8109
Address
663 LANIER PARK DR
Enumeration Date
23 May 2005
Last Update Date
29 May 2008
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:21State licenses:1Digital endpointsOther names

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Provider Addresses for WILLIAM THOMAS CALLAHAN (MD)

  • Lanier Park Drive, Gainesville, Hall County, Georgia, 30501, United States

    GAINESVILLE, GA 305012059

    Phone: (770) 536-8109

    Fax: (770) 536-3203

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 30501)

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Reviews

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Frequently asked questions

Can I use this page to confirm WILLIAM THOMAS CALLAHAN (MD)'s NPI?
Yes. WILLIAM THOMAS CALLAHAN (MD) is listed with NPI 1356344535 in the public NPI dataset.
Does CMS list WILLIAM THOMAS CALLAHAN (MD) as active?
Yes — WILLIAM THOMAS CALLAHAN (MD) is active in the NPI listing used on this page.
What is WILLIAM THOMAS CALLAHAN (MD)'s specialty?
The listing groups WILLIAM THOMAS CALLAHAN (MD) with Other Service Providers. Clinical services aligned with this taxonomy classification.
What address line appears for WILLIAM THOMAS CALLAHAN (MD)?
WILLIAM THOMAS CALLAHAN (MD)'s geographic hint is Gainesville, Georgia in our summary view.
How many locations tie to this NPI?
2 practice locations appear in the available data.

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