Zachary M. Callahan
Expertise in
9
conditions

Dr. Zachary M. Callahan

General Surgery
410 42nd Ave N, Ste 400, 
Nashville, TN 
Accepting New Patients
Offers Telehealth
Expertise in
9
conditions
410 42nd Ave N, Ste 400, 
Nashville, TN 

Overview

Zachary M. Callahan, MD, is a board-certified, independent general surgeon at Ascension Saint Thomas in Nashville, Tennessee. Dr. Callahan provides surgical care to children and adults. He delivers advanced surgical treatments using minimally invasive and robotic-assisted technology to repair abdominal conditions and other injuries. Robotic-assisted and minimally invasive surgery may lead to a faster recovery, shorter hospital stay, and less scarring. Schedule a consultation to learn more.

Dr. Callahan is highly rated in 9 conditions, according to our data. His clinical expertise encompasses Hiatal Hernia, Cholecystitis, Hernia, Endoscopy, and Gastric Bypass.

Dr. Callahan is board certified in The American Board Of Surgery - General Surgery. He is actively involved in clinical research, co-authoring 30 peer reviewed articles. Dr. Callahan is currently accepting new patients.

Specialties

General Surgery

Licenses

Surgery in TN

Board Certifications

The American Board Of Surgery - General Surgery

Fellowships

Northshore University Health System

Hospital Affiliations

Tristar Centennial Medical Center
Ascension Saint Thomas Hospital
Ascension Saint Thomas Hospital Midtown
Ascension Saint Thomas Hospital

Languages Spoken

English

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Medicare
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE PART D
Oscar
  • EPO
  • HMO
  • PPO
Spectrum Priority Health
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
US Health and Life
  • EPO
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 10 Less Insurance Carriers -

Locations

The Surgical Clinic, P.L.L.C - 42nd Ave
410 42nd Ave N, Ste 400, Nashville, TN 37209

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

30 Total Publications

ASO Visual Abstract: Defining the Surgical Oncology Experience During General Surgery Residency: A Multi-Institutional Study from the US ROPE Consortium.
ASO Visual Abstract: Defining the Surgical Oncology Experience During General Surgery Residency: A Multi-Institutional Study from the US ROPE Consortium.
Journal: Annals of surgical oncology
Published: November 17, 2025
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Frequently Asked Questions about Dr. Zachary M. Callahan

How do I make an appointment with Dr. Zachary M. Callahan?

You can book an appointment with Dr. Zachary M. Callahan by calling their office at 615-329-7887. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Zachary M. Callahan a top-rated expert for Hiatal Hernia?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Zachary M. Callahan is classified as an Advanced expert for Hiatal Hernia, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Zachary M. Callahan specialize in?

While Dr. Zachary M. Callahan is a General Surgery, they have specific expertise in Hiatal Hernia, Cholecystitis, and Hernia. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within General Surgery.

Does Dr. Zachary M. Callahan participate in research or clinical trials?

Yes. Dr. Zachary M. Callahan has published 30 articles and abstracts on conditions like Hiatal Hernia. You can view a list of Dr. Zachary M. Callahan's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Zachary M. Callahan accept my insurance?

Dr. Zachary M. Callahan accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 615-329-7887 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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