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

Internal Medicine

Ralph A. Lanza, MD

Works at hospitals in Bryn Mawr, PA · Paoli, PA · Pennsylvania

Summary

Ralph A. Lanza, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Bryn Mawr, PA and Paoli, PA. NPI 1285601039. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Ralph A. Lanza, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
40Years since medical school (graduated 1986)
University Of Rochester School Of Medicine And DentistryMedical school
MaleGender (as listed)

Quick answers

Which hospitals does Ralph A. Lanza work at?
Medicare's official clinician data lists Ralph A. Lanza at 2 hospitals: Bryn Mawr Hospital and Paoli Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Ralph A. Lanza see patients?
Medicare's clinician data lists 2 practice locations, including Fairfield, CT and Paoli, PA. Call before your visit to confirm the address.
What is Ralph A. Lanza's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Ralph A. Lanza accept Medicare assignment?
Yes. Medicare's clinician data says Ralph A. Lanza 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 Ralph A. Lanza?
(203) 255-8888, as listed in official Medicare / NPI Registry data.
What is Ralph A. Lanza's NPI number?
1285601039. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Ralph A. Lanza works

Medicare's Facility Affiliation Data lists Ralph A. Lanza at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Ralph A. Lanza is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Ralph A. Lanza as a member of these groups (CMS data updated 2026-10-02).

  • Ptsma Inc224 clinicians in the group
  • Great Valley Medical Associates, PC5 clinicians in the group

Specialties

Find other Internal Medicine doctors in Connecticut →

Other internal medicine doctors in Fairfield

Clinicians with the same Medicare primary specialty in Fairfield, CT — not a recommendation.

All internal medicine doctors in Fairfield →

Clinician information

CredentialMD
Medical schoolUniversity Of Rochester School Of Medicine And Dentistry
Graduation year1986
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1285601039
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians