DR. NELSON GUILBE GASTON MD
NPI 1942217104
Anesthesiology in San Juan, PR

Q: What is Nelson Guilbe Gaston's NPI number?

The NPI number for Nelson Guilbe Gaston is 1942217104. It was assigned to this individual provider in the NPPES registry on August 1, 2006.

Q: What is Nelson Guilbe Gaston's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Active since August 01, 2006PECOS Enrolled

1785 CARR 21, LAS LOMAS, SAN JUAN, PR 00921(787) 782-8389(787) 649-3271 Get Directions Write a Review

NPPES record last updated: August 8, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. Nelson Guilbe Gaston Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. NELSON GUILBE GASTON MD (NPI 1942217104) is an individual anesthesiology provider in San Juan, Puerto Rico, licensed in Puerto Rico (12950) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1942217104

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameDR. NELSON GUILBE GASTONCredential: MD

Location Address1785 CARR 21, LAS LOMASSan Juan, PR 00921-3399

Mailing Address35 Calle Juan C Borbon Ste 67, Pmb 342Guaynabo, PR 00969-5375 · (787) 782-8389 · Fax (787) 649-3271

Phone(787) 782-8389

Fax(787) 649-3271

Sole ProprietorNo

Enumeration DateAugust 1, 2006

Last NPPES UpdateAugust 8, 2013

✔ NPI 1942217104 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in PR · 12950

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

1785 CARR 21, San Juan, PR 00921

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Other Identifiers 1

Medicare PIN0085016BPR

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Nelson Guilbe Gaston Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Nelson Guilbe Gaston reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Centro De Cancer De La Universidad

Hematology & Oncology

PR 21 INT PR18, BO MONACILLO
San Juan, PR 00927

Reassigned Medicare billing, Puerto Rico enrollment
87 clinicians in this Medicare group

NPI 1215418751 (787) 772-8300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PR METABOLIC AND ENDOCRINE CARE LLC

Internal Medicine (Endocrinology, Diabetes & Metabolism)

1785 CARR 21
SAN JUAN, PR 00921

San Juan Municipio (787) 484-8354

METROHEALTH, INC.

General Acute Care Hospital

1785 CARR 21, LAS LOMAS
SAN JUAN, PR 00921

San Juan Municipio (787) 782-9999

JAEL EMILIO CAMACHO MATOS MD

Emergency Medicine

1785 CARR 21
SAN JUAN, PR 00921

San Juan Municipio (787) 782-9999

DR. LUIS F MOLINARI CASTELLO MD

Anesthesiology

1785 CARR 21
SAN JUAN, PR 00921

San Juan Municipio (787) 782-8389

JAIME JOSE BRAVO CASTRO M.D.

Ophthalmology

1785 CARR 21, HOSPITAL METROPOLITANO SUITE 202
SAN JUAN, PR 00921

San Juan Municipio (787) 781-5153

CARLOS ROJAS CARVAJAL M.D.

General Practice

1785 CARR 21
SAN JUAN, PR 00921

San Juan Municipio (787) 565-3670

METROPOLITAN OTORHINOLARYNGOLOGY GROUP, CSP

Otolaryngology

1785 CARR 21, COND. TORRE DEL METROPOLITAN OFICINA 309
RIO PIEDRAS, PR 00921

San Juan Municipio (787) 781-0644

DR. HIRAM MERCADO M.D.

Neurological Surgery

1785 CARR 21, LAS LOMAS
SAN JUAN, PR 00921

San Juan Municipio (787) 781-1450

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nelson Guilbe Gaston's NPI number?

The NPI number for Nelson Guilbe Gaston is 1942217104. It was assigned to this individual provider in the NPPES registry on August 1, 2006.

Where is Nelson Guilbe Gaston located?

Nelson Guilbe Gaston practices at 1785 Carr 21 Las Lomas, San Juan, PR 00921. The listed phone number is (787) 782-8389.

What is Nelson Guilbe Gaston's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Nelson Guilbe Gaston enrolled in Medicare?

Yes. Nelson Guilbe Gaston is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nelson Guilbe Gaston's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nelson Guilbe Gaston reassigns Medicare benefits to Centro De Cancer De La Universidad (San Juan, PR). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nelson Guilbe Gaston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Nelson Guilbe Gaston was last updated on August 8, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.