Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gail M Callaway, M.D.

Internal Medicine Physician in Smithsburg, MD · enumerated 2006 · practices at Medical Practices of Antietam LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1861457079

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Registry record

Entity type Individual (Type 1)

Name Dr. Gail M Callaway

Credential M.D.

Sex Female

Practice address 22911 Jefferson Blvd, Smithsburg, MD, 21783

Phone (301) 824-3343

Fax (301) 824-6323

Enumeration date Apr 19, 2006

Last updated in NPPES Oct 17, 2013

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D0057600 (MD) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License D0057600 (MD) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
755703500	Medicaid	MD	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1861457079 active?

Yes, as of the latest NPPES snapshot, NPI 1861457079 is active (record last updated 2013-10-17).

How do I verify Gail Callaway's NPI record?

Cross-check NPI 1861457079 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Jennifer Nunnelee Physician Assistant · Smithsburg, MD NPI 1376524447 Bradley Ingram Medical Physician Assistant · Smithsburg, MD NPI 1144290321 Michael Costello Family Medicine Physician · Smithsburg, MD NPI 1740250125 Brian Bonham Pediatrics Physician · Smithsburg, MD NPI 1366407975 William Kerns Pediatrics Physician · Smithsburg, MD NPI 1326003666 Susanna Goheen Internal Medicine Physician · Smithsburg, MD NPI 1548295587 Dipti Mistry Internal Medicine Physician · Smithsburg, MD NPI 1407173610 Bryan Peralta Acute Care Nurse Practitioner · Smithsburg, MD NPI 1801379490

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-10-17.