NPI Portal NPI Lookup & Verification

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

Marshall Postman, MD

Allergy & Immunology Physician in Reno, NV · enumerated 2006 · practices at Breathe Myo, LLC.

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

National Provider Identifier

1811900509

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Registry record

Entity type Individual (Type 1)
Name Marshall Postman
Credential MD
Sex Male
Practice address Reno, NV, 89519
Enumeration date Aug 14, 2006
Last updated in NPPES Oct 24, 2013

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

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 2361 (NV) Primary
207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License G13341 (CA) Secondary
207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 7773 (HI) Secondary
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

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 Marshall Postman?
Marshall Postman is registered in NPPES with the primary taxonomy of Allergy & Immunology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-10-24.