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

Dr. Efrain Gonzalez Arroyo, M.D.

Endocrinology, Diabetes & Metabolism Physician in Santurce, PR · enumerated 2006.

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

National Provider Identifier

1710078704

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Registry record

Entity type Individual (Type 1)

Name Dr. Efrain Gonzalez Arroyo

Credential M.D.

Sex Male

Practice address Santurce, PR, 00909

Phone (787) 726-1100

Enumeration date Sep 27, 2006

Last updated in NPPES Jun 6, 2017

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

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 5971 (PR) 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
225018	Other	PR	PREFERRED HEALTH PLAN
65794	Other	PR	CRUZ AZUL DE PUERTO RICO
9240007	Other	PR	HUMANA INSURANCE OF PR
445971	Other	PR	UIA
601493	Other	PR	MEDICARE Y MUCHO MAS
27268	Other	PR	TRIPLE SSS
2949	Other	PR	PREFERRED MEDICARE CHOICE

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

What specialty is Efrain Gonzalez Arroyo?

Efrain Gonzalez Arroyo is registered in NPPES with the primary taxonomy of Endocrinology, Diabetes & Metabolism 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.

Other providers at this practice address

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Manuel Medina Surgery of the Hand (Surgery) Physician · San Juan, PR NPI 1922005701 Norma Cruz Plastic Surgery Physician · Santurce, PR NPI 1043207467 Antolin Alvarez Pont Ophthalmology Physician · Santurce, PR NPI 1265413439 Francis Perez Cuadrado Clinical Psychologist · Santurce, PR NPI 1558345900 Juan Deniz Clinical Neurophysiology Physician · San Juan, PR NPI 1205811692 Miguel Lopez-Diaz Cardiovascular Disease Physician · San Juan, PR NPI 1568433852 Carlos Pantojas Rheumatology Physician · San Juan, PR NPI 1144299074 Hamid Galib Gastroenterology Physician · San Juan, PR NPI 1508825159

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-06-06.