Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Luis O Ramirez Ferrer Sr., MD
Surgery Physician in Mayaguez, PR · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427116797
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Registry record
Entity type Individual (Type 1)
Name Dr. Luis O Ramirez Ferrer Sr.
Credential MD
Sex Male
Practice address Ave Hostos # 410, Bo Sabalo Carr # 2, Mayaguez, PR, 00682
Phone (787) 806-1833
Fax (787) 834-8383
Enumeration date Dec 5, 2006
Last updated in NPPES Apr 22, 2014
Taxonomy & licenses
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 |
|---|---|---|---|
| 06530 | Other | - | BLUE CARD |
| 06530 | Other | - | CRUZ ARU |
| 660574003 | Other | - | MEDICAL CARD REFORMA |
| PE2111 | Other | - | PAN AMERICAN LIFE |
| 660574003 | Other | - | COSVIMED |
| 20895 | Other | - | AMPR |
| 3134 | Other | - | AMERICAN HEALTH |
| 5165 | Other | - | INTERNATIONAL MEDICAL CAR |
| 660574003 | Other | - | CIGNA |
| 660574003 | Other | - | TRICARE |
| 660574003 | Other | - | GHI |
| 660574003 | Other | - | MCS CLASSICARE |
| 660374003 | Other | - | SERI BELLA LDH |
| 660574003 | Other | - | HUMANA MILITARY |
| 346771 | Other | - | MEDICAL CARD SYSTEM |
| 660574003 | Other | - | AETNA |
| 660574003 | Other | - | FIRST PLUS MEDICARE |
| 660574003 | Other | - | MMM 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.
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 Luis Ramirez Ferrer?
Luis Ramirez Ferrer is registered in NPPES with the primary taxonomy of Surgery 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 → Luz Lassalle-Nieves Occupational Therapist · Mayaguez, PR NPI 1912197971 Western Doctors Connection Endoscopy Clinic/Center · Mayaguez, PR NPI 1467695908 Western Doctor Connection Endoscopy Clinic/Center · Mayaguez, PR NPI 1508009838 Clinica Venosa Del Oeste, Inc Multi-Specialty Clinic/Center · Mayaguez, PR NPI 1174882211 Xiomara Cruz Bracero Internal Medicine Physician · Mayaguez, PR NPI 1740619956 Freddy Madera Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Mayaguez, PR NPI 1568849859 Xcruz MD Psc Primary Care Clinic/Center · Mayaguez, PR NPI 1801255864 Robert Rodriguez Internal Medicine Physician · Mayaguez, PR NPI 1265883177
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-22.