NPI Portal NPI Lookup & Verification

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

Melissa Hersh, MD

Pediatric Emergency Medicine (Emergency Medicine) Physician in Madera, CA · enumerated 2010.

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

National Provider Identifier

1316253545

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Registry record

Entity type Individual (Type 1)
Name Melissa Hersh
Credential MD
Sex Female
Practice address Madera, CA, 93636
Phone (559) 353-3000
Enumeration date Aug 25, 2010
Last updated in NPPES Jul 28, 2022

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

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
207PP0204X Pediatric Emergency Medicine (Emergency Medicine) Physician Allopathic & Osteopathic Physicians · License A149931 (CA) 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
390200000X Other NY STUDENT, HEALTHCARE

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 Melissa Hersh?
Melissa Hersh is registered in NPPES with the primary taxonomy of Pediatric Emergency Medicine (Emergency Medicine) 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 2022-07-28.