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DR. ALEXANDRA HERRERO LEON GUERRERO M.D.
NPI 1780020586
Surgery in Tamuning, GU

Active since May 20, 2013PECOS EnrolledAccepts Medicare Assignment
280 PALE SAN VITORES RD, TAMUNING, GU 96913(671) 647-4542(671) 647-4558 Get Directions Write a Review

NPPES record last updated: August 27, 2019. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Alexandra Herrero Leon Guerrero M.d. NPPES

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

DR. ALEXANDRA HERRERO LEON GUERRERO M.D. (NPI 1780020586) is an individual surgery provider in Tamuning, Guam, licensed in Guam (M-2170) and active in the NPI registry since May 2013. She is enrolled in Medicare PECOS, is affiliated with Guam Memorial Hospital Authority, and maintains a secondary practice location in New York.

NPPES Registry Identity

NPI1780020586
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameDR. ALEXANDRA HERRERO LEON GUERREROCredential: M.D.
Location Address280 PALE SAN VITORES RDTamuning, GU 96913-3615
Mailing Address10 W Anaco LnPiti, GU 96915-5412 · (650) 804-6818
Phone(671) 647-4542
Fax(671) 647-4558
Sole ProprietorNo
Medical School CMSNew York University School Of MedicineGraduated 2013
Enumeration DateMay 20, 2013
Last NPPES UpdateAugust 27, 2019
✔ NPI 1780020586 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in GU · M-2170
Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

Secondary Practice Location 1

Location 1550 1st AveNew York, NY 10016-6402 · Phone (212) 263-5506

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Alexandra Herrero Leon Guerrero M.d. 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 ID547693566
PECOS Enrollment IDI20200110001936
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.

Areas of Expertise CMS Part B claims 9

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.

Established patient office or other outpatient visit, 20-29 minutes 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
84 services69 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
31 services31 patients
Follow-up hospital inpatient care per day, typically 35 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
28 services27 patients
New patient office or other outpatient visit, 30-44 minutes 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
27 services27 patients
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121
Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.
21 services21 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
14 services14 patients

Hospital Affiliations CMS Care Compare

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96913 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$92.50 typical visit price
range $60.53 – $180.05
Typical copayment $23.12 (range $15.13 – $45.01)
Most-billed visit code 99203
Established Patient
$74.92 typical visit price
range $20.09 – $147.56
Typical copayment $18.73 (range $5.02 – $36.89)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

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

DR. JITKA LOM M.D.
Family Medicine
280 PALE SAN VITORES RD
TAMUNING, GU 96913
Guam (671) 647-4542
DR. JOHN A FEGURGUR M.D.
Surgery (Plastic and Reconstructive Surgery)
280 PALE SAN VITORES RD
TAMUNING, GU 96913
Guam (671) 647-4542
DR. KIRK BELLIS D.O.
Psychiatry & Neurology (Child & Adolescent Psychiatry)
280 PALE SAN VITORES RD, SUNFLOWER VILLA SUITE 205
TAMUNING, GU 96913
Guam (671) 646-4757
DR. KIA M RAHMANI M.D.
Surgery
280 PALE SAN VITORES RD
TAMUNING, GU 96913
Guam (671) 647-4542
HAFA ADAL SPECIALIST GROUP, LLP
Clinic/Center (Ambulatory Surgical)
280 PALE SAN VITORES RD, SUNFLOWER VILLA
TAMUNING, GU 96913
Guam (671) 647-4542
REST ASSURED ANESTHESIA SERVICES, INC.
Nurse Anesthetist, Certified Registered
280 PALE SAN VITORES RD
TAMUNING, GU 96913
Guam (671) 486-6368
KEVIN JOHN SULLIVAN CRNA
Nurse Anesthetist, Certified Registered
280 PALE SAN VITORES RD
TAMUNING, GU 96913
Guam (671) 647-4542
HAFA SPECIALIST GROUP LLP
Specialist
280 PALE SAN VITORES RD
TAMUNING, GU 96913
Guam (671) 647-4542

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 Alexandra Leon Guerrero's NPI number?

The NPI number for Alexandra Leon Guerrero is 1780020586. It was assigned to this individual provider in the NPPES registry on May 20, 2013.

Where is Alexandra Leon Guerrero located?

Alexandra Leon Guerrero practices at 280 Pale San Vitores Rd, Tamuning, GU 96913. The listed phone number is (671) 647-4542.

What is Alexandra Leon Guerrero's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Alexandra Leon Guerrero enrolled in Medicare?

Yes. Alexandra Leon Guerrero 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.

Is Alexandra Leon Guerrero affiliated with any hospitals?

According to CMS data, Alexandra Leon Guerrero is affiliated with Guam Memorial Hospital Authority.

When was this NPI record last updated?

The NPPES record for Alexandra Leon Guerrero was last updated on August 27, 2019. NPI Profile syncs with the weekly NPPES data releases published by CMS.