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Pediatric Medicine

Lisa D. Ryan, DO

Sees patients in Westbrook, ME · Windham, ME · Maine

Summary

Lisa D. Ryan, DO (Pediatric Medicine) is enrolled with Medicare at 2 practice locations in Westbrook, ME and Windham, ME. NPI 1285605550. 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 Lisa D. Ryan, 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

Pediatric MedicinePrimary specialty
YesAccepts Medicare assignment
35Years since medical school (graduated 1991)
New York College Of Osteo Medicine Of New York Institute Of TechnologyMedical school
FemaleGender (as listed)
Mercy HospitalGroup practice

Quick answers

Where does Lisa D. Ryan see patients?
Medicare's clinician data lists 2 practice locations, including Westbrook, ME and Windham, ME. Call before your visit to confirm the address.
What is Lisa D. Ryan's specialty?
Medicare lists Pediatric Medicine as the primary specialty.
Does Lisa D. Ryan accept Medicare assignment?
Yes. Medicare's clinician data says Lisa D. Ryan 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.
What is the phone number for Lisa D. Ryan?
(207) 857-8174, as listed in official Medicare / NPI Registry data.
What is Lisa D. Ryan's NPI number?
1285605550. 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 Lisa D. Ryan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Lisa D. Ryan as a member of this group (CMS data updated 2026-10-02).

  • Mercy Hospital301 clinicians in the group

Specialties

Find other Pediatric Medicine doctors in Maine →

Other pediatricians in Westbrook

Clinicians with the same Medicare primary specialty in Westbrook, ME — not a recommendation.

All pediatricians in Westbrook →

Clinician information

CredentialDO
Medical schoolNew York College Of Osteo Medicine Of New York Institute Of Technology
Graduation year1991
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1285605550
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