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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mario Estolano, MD

Emergency Medicine Physician in Marietta, OH · enumerated 2006.

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

National Provider Identifier

1881655546

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Registry record

Entity type Individual (Type 1)
Name Mario Estolano
Credential MD
Sex Male
Practice address Marietta, OH, 45750
Phone (740) 562-2000
Fax (740) 568-2096
Enumeration date Mar 31, 2006
Last updated in NPPES Jan 16, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License MD042124E (PA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 18489 (WV) Secondary
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 35.085260 (OH) 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.

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Frequently asked questions

What is the NPI number for Mario Estolano?
The National Provider Identifier (NPI) for Mario Estolano is 1881655546, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mario Estolano practice?
The practice location on file with NPPES is in Marietta, OH. 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 2024-01-16.