Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Alan Ortmann, MD

Rheumatology Physician in Indianapolis, IN · enumerated 2006.

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

National Provider Identifier

1215987185

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Registry record

Entity type Individual (Type 1)

Name Robert Alan Ortmann

Credential MD

Sex Male

Practice address Lilly Corporate Ctr, Dc 1940, Indianapolis, IN, 46285

Phone (317) 433-2779

Enumeration date May 11, 2006

Last updated in NPPES Aug 5, 2013

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 2001005641 (MO) Secondary

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License E-5590 (AR) Secondary

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 01072827A (IN) Primary

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
167965001	Medicaid	AR	-
P00415665	Other	MO	RAILROAD MEDICARE
205295900	Medicaid	MO	-
E-5590	Other	AR	ARKANSAS MEDICAL LICENSE
660003367	Other	MO	RR MEDICARE

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Robert Ortmann?

Robert Ortmann is registered in NPPES with the primary taxonomy of Rheumatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Richard Walgren Hematology & Oncology Physician · Indianapolis, IN NPI 1356437727 David Debrota Internal Medicine Physician · Indianapolis, IN NPI 1558451740 James Voelker Nephrology Physician · Indianapolis, IN NPI 1801977426 Robert Browne Infectious Disease Physician · Indianapolis, IN NPI 1427123025 Kristine Courtney Specialist · Indianapolis, IN NPI 1659407237 Andrew Schade Clinical Pathology/Laboratory Medicine Physician · Indianapolis, IN NPI 1417121815 Paolo Abada Hematology & Oncology Physician · Indianapolis, IN NPI 1780844506 John Hayes Psychiatry Physician · Indianapolis, IN NPI 1003062233

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-08-05.