Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Horst-Helmut Meissner, M.D.

Critical Care Medicine (Internal Medicine) Physician in San Jacinto, CA · enumerated 2006.

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

National Provider Identifier

1730134248

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Registry record

Entity type Individual (Type 1)

Name Dr. Horst-Helmut Meissner

Credential M.D.

Sex Male

Practice address 341 E Main Street, Suite 100, San Jacinto, CA, 92583

Phone (951) 654-5590

Fax (951) 654-0839

Enumeration date May 23, 2006

Last updated in NPPES Apr 28, 2015

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A32985 (CA) Primary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License A32985 (CA) Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A32985 (CA) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License A32985 (CA) 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
1730134248	Medicaid	IA	-

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 specialty is Horst-Helmut Meissner?

Horst-Helmut Meissner is registered in NPPES with the primary taxonomy of Critical Care Medicine (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-28.