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DR. GILBERT M LOPEZ MD
NPI 1265597579
Anesthesiology in Oka Tamuning, GU

Active since December 27, 2006PECOS EnrolledAccepts Medicare Assignment
64.82/100
CMS Quality Rating
850 GOVERNOR CARLOS CAMACHO ROAD, OKA TAMUNING, GU 96913(671) 647-2418(671) 649-5508 Get Directions Write a Review

NPPES record last updated: June 12, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Gilbert M Lopez Md NPPES

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

DR. GILBERT M LOPEZ MD (NPI 1265597579) is an individual anesthesiology provider in Oka Tamuning, Guam, licensed in Guam (M-1399) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Guam Memorial Hospital Authority, and is a graduate of Other (1991).

NPPES Registry Identity

NPI1265597579
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. GILBERT M LOPEZCredential: MD
Location Address850 GOVERNOR CARLOS CAMACHO ROADOka Tamuning, GU 96913-3128
Mailing Address850 Governor Carlos Camacho RoadOka Tamuning, GU 96913-3128 · (671) 647-2418 · Fax (671) 649-5508
Phone(671) 647-2418
Fax(671) 649-5508
Sole ProprietorNo
Medical School CMSOtherGraduated 1991
Enumeration DateDecember 27, 2006
Last NPPES UpdateJune 12, 2025
NPPES CertifiedJune 12, 2025
✔ NPI 1265597579 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in GU · M-1399
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.

Other Identifiers 1

Other56543Pin

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gilbert M Lopez Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3678564895
PECOS Enrollment IDI20130611000277
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 Reassignments

4

Medicare enrollment records show Gilbert Lopez reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ac Micro Guam LLC
Anesthesiology
633 GOV CARLOS G CAMACHO RD, STE 101 GUAM MEDICAL PLAZA
Tamuning, GU 96913
  • Reassigned Medicare billing, Guam enrollment
  • 12 clinicians in this Medicare group
NPI 1699768093 (671) 646-3855
Guam Healthcare Development Incorporated
Clinic/Center
133 ROUTE 3
Dededo, GU 96929
  • Reassigned Medicare billing, Guam enrollment
  • 432 clinicians in this Medicare group
NPI 1326447939 (671) 645-5500
Guam Memorial Hospital
General Acute Care Hospital
850 GOVERNOR CARLOS CAMACHO ROAD
Oka Tamuning, GU 96913
  • Reassigned Medicare billing, Guam enrollment
  • 320 clinicians in this Medicare group
NPI 1366519027 (671) 647-2937
Guam X-Ray
Vascular & Interventional Radiology
633 GOV CARLOS G CAMACHO RD, GUAM MEDICAL PLAZA, SUITE 210
Tamuning, GU 96913
  • Reassigned Medicare billing, Guam enrollment
  • 103 clinicians in this Medicare group
NPI 1376767426 (671) 649-1001

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for x-ray on arteries 01924
Anesthesia for x-ray on arteries is a procedure to ensure comfort during imaging tests. A medicine is given to make you relaxed or sleep, minimizing any discomfort. It's typically used for invasive procedures to examine arteries for blockages or other issues.
46 services41 patients
Anesthesia for placement or revision of blood flow shunt 01844
Anesthesia for blood flow shunt placement or revision ensures comfort during the procedure. It involves medication to numb or induce sleep, preventing pain or discomfort. It's safe, monitored by professionals, and tailored to individual needs.
26 services24 patients
Anesthesia for placement or revision of blood flow shunt 01844
Anesthesia for blood flow shunt placement or revision ensures comfort during the procedure. It involves medication to numb or induce sleep, preventing pain or discomfort. It's safe, monitored by professionals, and tailored to individual needs.
13 services13 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
12 services12 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Guam Memorial Hospital Authority

Acute Care Hospitals · Tamuning, GU
2/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number650001
Location85O Gov Carlos G Camacho RoadTamuning, GU 96913 · Guam County
Emergency services

Guam Regional Medical City

Acute Care Hospitals · Dededo, GU
OwnershipVoluntary non-profit - Private
CMS Certification Number650003
Location133 Route 3Dededo, GU 96929 · Guam County
Emergency services

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

64.82/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Promoting Interoperability0
Improvement Activities30
Cost78.59

Other Providers at the Same Location NPPES 16

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

DR. JAMES W MURPHY MD FACEP
Emergency Medicine (Emergency Medical Services)
850 GOVERNOR CARLOS CAMACHO ROAD
OKA TAMUNING, GU 96913
Guam (671) 647-2418
GUAM MEMORIAL HOSPITAL
General Acute Care Hospital
850 GOVERNOR CARLOS CAMACHO ROAD
OKA TAMUNING, GU 96913
Guam (671) 647-2937
GUAM MEMORIAL HOSPITAL
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
850 GOVERNOR CARLOS CAMACHO ROAD
OKA TAMUNING, GU 96913
Guam (671) 647-2104
DR. GOLDELINA L MARFORI MD
Anesthesiology
850 GOVERNOR CARLOS CAMACHO ROAD
OKA TAMUNING, GU 96913
Guam (671) 647-2418
DR. JONATHAN SIDELL MD
Obstetrics & Gynecology
850 GOVERNOR CARLOS CAMACHO ROAD
OKA TAMUNING, GU 96913
Guam (671) 647-2418
DR. JOHN Y YOUNG MD
Radiology (Diagnostic Radiology)
850 GOVERNOR CARLOS CAMACHO ROAD
OKA TAMUNING, GU 96913
Guam (671) 647-2418
GLENN DONALD CUNNINGHAM MD
Orthopaedic Surgery
850 GOVERNOR CARLOS CAMACHO ROAD, GUAM MEMORIAL HOSPITAL AUTHORITY
TAMUNING, GU 96913
Guam (671) 647-2488
DR. AARON C JOHANSEN MD
Emergency Medicine
850 GOVERNOR CARLOS CAMACHO ROAD
OKA TAMUNING, GU 96913
Guam (671) 647-2418

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 Gilbert Lopez's NPI number?

The NPI number for Gilbert Lopez is 1265597579. It was assigned to this individual provider in the NPPES registry on December 27, 2006.

Where is Gilbert Lopez located?

Gilbert Lopez practices at 850 Governor Carlos Camacho Road, Oka Tamuning, GU 96913. The listed phone number is (671) 647-2418.

What is Gilbert Lopez's specialty?

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

Is Gilbert Lopez enrolled in Medicare?

Yes. Gilbert Lopez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Gilbert Lopez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gilbert Lopez reassigns Medicare benefits to 4 organizations: Ac Micro Guam LLC (Tamuning, GU), Guam Healthcare Development Incorporated (Dededo, GU), Guam Memorial Hospital (Oka Tamuning, GU) and Guam X-Ray (Tamuning, GU). Each 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 Gilbert Lopez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Gilbert Lopez affiliated with any hospitals?

According to CMS data, Gilbert Lopez is affiliated with Guam Memorial Hospital Authority and Guam Regional Medical City.

When was this NPI record last updated?

The NPPES record for Gilbert Lopez was last updated on June 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.