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Internal Medicine

Marissa A. Copas Weaver, MD

Works at hospitals in Rapid City, SD · South Dakota

Summary

Marissa A. Copas Weaver, MD (Internal Medicine) is listed by Medicare at 1 hospital in Rapid City, SD. NPI 1760059703. 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 Marissa A. Copas Weaver, 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
5Years since medical school (graduated 2021)
University Of Kansas School Of Med (kc/wich/sal)Medical school
FemaleGender (as listed)
Monument Health Rapid City Hospital IncGroup practice

Quick answers

Which hospitals does Marissa A. Copas Weaver work at?
Medicare's official clinician data lists Marissa A. Copas Weaver at 1 hospital: Monument Health Rapid City Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Marissa A. Copas Weaver see patients?
Medicare's clinician data lists 1 practice location in Rapid City, SD. Call before your visit to confirm the address.
What is Marissa A. Copas Weaver's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Pediatric Medicine.
Does Marissa A. Copas Weaver accept Medicare assignment?
Yes. Medicare's clinician data says Marissa A. Copas Weaver 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 Marissa A. Copas Weaver?
(605) 755-8109, as listed in official Medicare / NPI Registry data.
What is Marissa A. Copas Weaver's NPI number?
1760059703. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Marissa A. Copas Weaver works

Medicare's Facility Affiliation Data lists Marissa A. Copas Weaver 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 Marissa A. Copas Weaver is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Marissa A. Copas Weaver as a member of this group (CMS data updated 2026-10-02).

  • Monument Health Rapid City Hospital Inc564 clinicians in the group

Specialties

Find other Internal Medicine doctors in South Dakota →

Other internal medicine doctors in Rapid City

Clinicians with the same Medicare primary specialty in Rapid City, SD — not a recommendation.

All internal medicine doctors in Rapid City →

Clinician information

CredentialMD
Medical schoolUniversity Of Kansas School Of Med (kc/wich/sal)
Graduation year2021
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1760059703
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