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

Internal Medicine

Cristina D. Hamacher, DO

Works at hospitals in Warwick, RI · Rhode Island

Summary

Dr. Cristina D. Hamacher, DO is an internal medicine doctor at 455 Toll Gate Rd, Warwick, RI 02886. Phone: (401) 737-7010. Accepts Medicare assignment. NPI 1922793108. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 455 Toll Gate Rd, Warwick, RI 02886 · Directions
  • Phone: (401) 737‑7010
  • Medicare: Accepts Medicare assignment
  • Hospital: Kent County Memorial Hospital
  • Group practice: Affinity Physicians LLC.
  • Medical school: Campbell Univ School Of Osteopathic Medicine · graduated 2023 (3 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Cristina D. Hamacher, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Cristina D. Hamacher accept Medicare assignment?
Yes. Medicare's clinician data says Cristina D. Hamacher accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Cristina D. Hamacher's NPI number?
1922793108. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Cristina D. Hamacher works

Medicare's Facility Affiliation Data lists Cristina D. Hamacher at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Kent County Memorial HospitalWarwick, RI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 410009

Practice locations

Addresses where Cristina D. Hamacher is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Cristina D. Hamacher as a member of this group (CMS data updated October 2, 2026).

  • Affinity Physicians LLC.730 clinicians in the group

Specialties

Find other Internal Medicine doctors in Rhode Island →

Other internal medicine doctors in Warwick

Clinicians with the same Medicare primary specialty in Warwick, RI — not a recommendation.

All internal medicine doctors in Warwick →

Other clinicians in Affinity Physicians LLC.

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolCampbell Univ School Of Osteopathic Medicine
Graduation year2023 (3 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1922793108
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians