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Dr. Douglas J. Horton, M.D.

Allergy & Immunology Physician in Indianapolis, IN · enumerated 2005 · practices at Allergy Partners, Pllc.

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

National Provider Identifier

1245212141

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Registry record

Entity type Individual (Type 1)
Name Dr. Douglas J. Horton
Credential M.D.
Sex Male
Practice address 9002 N Meridian St Ste 107, Indianapolis, IN, 46260
Phone (317) 848-9441
Fax (317) 924-8239
Enumeration date Nov 16, 2005
Last updated in NPPES Jul 7, 2021

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 01023903A (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
IN1126006 Other IN MEDICARE PTAN
IN1127006 Other IL MEDICARE PTAN
100064930 Medicaid IN -
IN1125006 Other IN MEDICARE PTAN
P00321196 Other - RAILROAD MEDICARE PIN

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

Where does Douglas Horton practice?
The practice location on file with NPPES is in Indianapolis, IN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Douglas Horton?
The National Provider Identifier (NPI) for Douglas Horton is 1245212141, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-07.