Marissa Copas Weaver
Internal Medicine Physician · Rapid City, SD
Marissa Copas Weaver is an internal medicine physician with a practice address in Rapid City, South Dakota, and NPI 1760059703, issued on Jun 8, 2021. Check the license (South Dakota 17712, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Marissa Copas Weaver
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 17712 SD
Self-reported in NPPES; status is on the state search - Practice location
- 640 Flormann St, Rapid City, SD 57701
- Phone
- (605) 755-3300
- Enumerated
- Jun 8, 2021
- Record last updated
- Apr 3, 2026
- Medicare enrollment
- Enrolled (PECOS I20251106002032); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 2021
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 247 in South Dakota → Look up another NPI →
Also registered at 640 Flormann St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maryann Adams-Gregson, RN, DCESDiabetes Educator Registered Nurse1851022305
- Manuel Arbo, MDInfectious Disease Physician1114993128
- Ember Bartels, CNANurse's Aide1699875492
- Thea Beyer, DNP, APRN, CPNP, RNPediatric Nurse Practitioner1912688045
- Fredric Birch, MDNephrology Physician1851349906
- Brian Bowers, DORheumatology Physician1891877098
Verify Marissa Copas Weaver in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 17712Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
148 Medicare Part D claims for 20 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Lisinopril20 claims
- Sertraline Hcl14 claims
- Metformin Hcl13 claims
- Rosuvastatin Calcium13 claims
- Atorvastatin Calcium12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Monument Health Rapid City Hospital IncRapid City, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Copas Weaver among 247 internal medicine physician records in South Dakota
Marissa Copas Weaver is one of 247 internal medicine physician records with a practice address in South Dakota. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 7% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2021 · median 2008 among the 146 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
43 internal medicine physician records list a practice address in Rapid City
They are 43 of the 3,017 NPPES records with a practice address in Rapid City, and 247 internal medicine physician records in South Dakota.
All 247 in South Dakota → Every provider in Rapid City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Eaton, MDRapid City, SD 577011871548578
- James Engelbrecht, MDRapid City, SD 577011003886680
- David Evans, MDRapid City, SD 577011780639484
- Kenneth Hart, MDRapid City, SD 577011689609828
- John Herbst, MDRapid City, SD 577011922037357
- Dave Johnson, MDRapid City, SD 577011821038944
- David Klocke, MDRapid City, SD 577011487624573
- Sonja Labrie, MDRapid City, SD 577011295789451
Common questions
What is Marissa Copas Weaver's NPI number?
Marissa Copas Weaver's National Provider Identifier (NPI) is 1760059703, issued on Jun 8, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Copas Weaver located?
The NPPES record lists a practice address at 640 Flormann St, Rapid City, SD, 57701. Phone: (605) 755-3300. Providers update this record themselves, so call before visiting.
How can I verify Marissa Copas Weaver's license?
NPPES lists South Dakota license number 17712, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marissa Copas Weaver prescribe under Medicare Part D?
In 2024, Marissa Copas Weaver had 148 Medicare Part D claims for 20 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.