Theresa E. Hammerquist, MSN, APRN, NP-C, CNP
Primary Care Nurse Practitioner · Martin, SD
Theresa E. Hammerquist, MSN, APRN, NP-C, CNP is a primary care nurse practitioner with a practice address in Martin, South Dakota, and NPI 1982194049, issued on May 15, 2018. Check the license (South Dakota CP001376, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theresa E. Hammerquist
- Credential
- MSN, APRN, NP-C, CNP
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- CP001376 SD
Self-reported in NPPES; status is on the state search - Practice location
- 109 Pugh St, Martin, SD 57551
- Phone
- (605) 685-6868
- Enumerated
- May 15, 2018
- Record last updated
- May 15, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 109 Pugh St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cynthia BoltzFamily Nurse Practitioner1083915789
- Courtney Carmichael, PA-CPhysician Assistant1356867238
Verify Theresa E. Hammerquist in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
Search for license CP001376Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
40 Medicare Part D claims for 23 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $17.51
1 payment: food and beverage; the largest payer was Alkermes, Inc. The 4,321 providers of this specialty with any payment received $625.13 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 primary care nurse practitioner records list a practice address in Martin
They are 2 of the 14 NPPES records with a practice address in Martin, and 22 primary care nurse practitioner records in South Dakota.
All 2 in Martin → All 22 in South Dakota → Every provider in Martin →
Other primary care nurse practitioner records in South Dakota
- Edward AcheampongWinner, SD1972465623
- Luke AltstielSturgis, SD1588597298
- Kelsey Blais, NPWatertown, SD1578373627
- Ashley Clemmons, FNP-CRapid City, SD1356278337
- Nicole Cotton, CNPSioux Falls, SD1447841077
- Nicole Coyle, CNPRapid City, SD1528818481
- Laura Craig, FNP - BCFort Meade, SD1871293027
- Melissa Day, DNP, APRN, FNP-CMc Intosh, SD1184154304
- Shawnee Earley, CNPFort Meade, SD1558083824
- Cali Egerdahl, CNPFort Meade, SD1912775628
Common questions
What is Theresa E. Hammerquist, MSN, APRN, NP-C, CNP's NPI number?
Theresa E. Hammerquist, MSN, APRN, NP-C, CNP's National Provider Identifier (NPI) is 1982194049, issued on May 15, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Theresa E. Hammerquist, MSN, APRN, NP-C, CNP located?
The NPPES record lists a practice address at 109 Pugh St, Martin, SD, 57551. Phone: (605) 685-6868. Providers update this record themselves, so call before visiting.
How can I verify Theresa E. Hammerquist, MSN, APRN, NP-C, CNP's license?
NPPES lists South Dakota license number CP001376, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.
How much does Theresa E. Hammerquist, MSN, APRN, NP-C, CNP prescribe under Medicare Part D?
In 2024, Theresa E. Hammerquist, MSN, APRN, NP-C, CNP had 40 Medicare Part D claims for 23 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. 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.