Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Nurse Practitioner

Ann M. Keenan, NP

Sees patients in Dededo, GU · Guam

Summary

Ann M. Keenan, NP (Nurse Practitioner) is enrolled with Medicare at 1 practice location in Dededo, GU. NPI 1669211405. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Ann M. Keenan, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Nurse PractitionerPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
6Years since medical school (graduated 2020)
University Of Rochester School Of Medicine And DentistryMedical school
FemaleGender (as listed)
Gurusamy IncGroup practice

Quick answers

Where does Ann M. Keenan see patients?
Medicare's clinician data lists 1 practice location in Dededo, GU. Call before your visit to confirm the address.
What is Ann M. Keenan's specialty?
Medicare lists Nurse Practitioner as the primary specialty.
Does Ann M. Keenan accept Medicare assignment?
Yes. Medicare's clinician data says Ann M. Keenan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Ann M. Keenan offer telehealth?
Medicare's clinician data says Ann M. Keenan offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Ann M. Keenan?
(671) 647-5355, as listed in official Medicare / NPI Registry data.
What is Ann M. Keenan's NPI number?
1669211405. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Ann M. Keenan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Ann M. Keenan as a member of this group (CMS data updated 2026-10-02).

  • Gurusamy Inc3 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, Guam →

Other nurse practitioners in Dededo

Clinicians with the same Medicare primary specialty in Dededo, GU — not a recommendation.

All nurse practitioners in Dededo →

Clinician information

CredentialNP
Medical schoolUniversity Of Rochester School Of Medicine And Dentistry
Graduation year2020
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1669211405
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians