Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert Anton Gessler, M.D.

Urology Physician in Columbia, MD · enumerated 2006.

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

National Provider Identifier

1427122498

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert Anton Gessler

Credential M.D.

Sex Male

Practice address 10710 Charter Dr, Suite 130, Columbia, MD, 21044

Phone (410) 772-7000

Fax (410) 772-7072

Enumeration date Nov 20, 2006

Last updated in NPPES Jan 27, 2014

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License D0036854 (MD) Primary

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

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

What is the NPI number for Robert Gessler?

The National Provider Identifier (NPI) for Robert Gessler is 1427122498, a Type 1 (individual) record in the CMS NPPES registry.

Where does Robert Gessler practice?

The practice location on file with NPPES is in Columbia, MD. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-27.