Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

April Karen Valdez Marquez, DO, MPH

Pediatrics Physician in Dededo, GU · enumerated 2018.

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

National Provider Identifier

1265927305

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Registry record

Entity type Individual (Type 1)

Name April Karen Valdez Marquez

Credential DO, MPH

Sex Female

Practice address 520 W Santa Monica Ave, Dededo, GU, 96929

Phone (671) 635-4410

Enumeration date Jun 29, 2018

Last updated in NPPES May 17, 2024

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License DO-0107 (GU) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 April Karen Marquez?

April Karen Marquez is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Government of Guam Department of Administration Federally Qualified Health Center (FQHC) · Dededo, GU NPI 1972577104 Dept. of Public Health Pharmacy-Nrchc State or Local Public Health Clinic/Center · Dededo, GU NPI 1760532394 Department of Public Health and Social Services Public Health or Welfare Agency · Dededo, GU NPI 1740471028 Department of Public Health and Social Services Public Health or Welfare Agency · Dededo, GU NPI 1659562932 James Finch Advanced Practice Midwife · Dededo, GU NPI 1467643767 Teofila Maria Cruz Nurse Practitioner · Dededo, GU NPI 1548500291 Meagan Bamba-Ada Family Nurse Practitioner · Dededo, GU NPI 1568874345 Thora Mark Family Nurse Practitioner · Dededo, GU NPI 1336658889

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-17.