Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Guillermo A Herrera, MD

Anatomic Pathology & Clinical Pathology Physician in Mobile, AL · enumerated 2006 · practices at Usa Health Physician Billing Services LLC.

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

National Provider Identifier

1558375220

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Registry record

Entity type Individual (Type 1)

Name Guillermo A Herrera

Credential MD

Sex Male

Practice address 2451 University Hospital Dr Fl 1, Mobile, AL, 36617

Phone (251) 471-7790

Fax (251) 471-7096

Enumeration date Jul 28, 2006

Last updated in NPPES Jan 20, 2021

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 11552R (LA) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 2006000543 (MO) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License MD.10166 (AL) Primary

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

How do I verify Guillermo Herrera's NPI record?

Cross-check NPI 1558375220 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558375220 active?

Yes, as of the latest NPPES snapshot, NPI 1558375220 is active (record last updated 2021-01-20).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-20.