NPPES file of Aug 9, 2026

Cathy G. Sowers, CNP

Nurse Practitioner · Spearfish, SD

Cathy G. Sowers, CNP is a nurse practitioner with a practice address in Spearfish, South Dakota, and NPI 1609107788, issued on Jan 28, 2010. Check the license (South Dakota CP000586, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609107788
Name
Cathy G. Sowers
Credential
CNP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
CP000586 SD
Self-reported in NPPES; status is on the state search
Practice location
1420 N 10TH St, Spearfish, SD 57783
Phone
(605) 642-8414
Enumerated
Jan 28, 2010
Record last updated
Feb 6, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(605) 642-8618
Medicare enrollment
Enrolled (PECOS I20100327000643); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1420 N 10TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Terry Altstiel, MDSurgery Physician1336112358
  2. Darbi Anderson, CNPNurse Practitioner1932774031
  3. Melissa Bardsley, RD, CDE, CDRegistered Dietitian1033371372
  4. Brittany Bearstail, MDFamily Medicine Physician1144604158
  5. Daniel Berens, DOFamily Medicine Physician1316201304
  6. Jay Bogard, MDFamily Medicine Physician1720051741

Verify Cathy G. Sowers in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
    Search for license CP000586
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the South Dakota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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18% more Medicare Part D claims than the average nurse practitioner in 2024

1,313 Medicare Part D claims for 201 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.

  1. Cathy Sowers1,313
  2. Specialty average1,109

Most prescribed

  1. Alendronate Sodium187 claims
  2. Levothyroxine Sodium122 claims
  3. Atorvastatin Calcium91 claims
  4. Lisinopril66 claims
  5. Simvastatin57 claims
  6. Amlodipine Besylate54 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.

The MIPS final score for 2023 (Medicare payment program): 97.6 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score86.5
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $281.42

5 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Cathy Sowers$281.42
  2. Specialty average$791.64

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Monument Health Network IncSpearfish, SD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Cathy G. Sowers among 465 nurse practitioner records in South Dakota

Cathy G. Sowers, CNP is one of 465 nurse practitioner records with a practice address in South Dakota. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 23% of them.

  • NPI issued2010 · 23% of these records are older, 74% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2009 · median 2018 among the 331 with a school on file
  • Record last updated2013 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

9 nurse practitioner records list a practice address in Spearfish

They are 9 of the 382 NPPES records with a practice address in Spearfish, and 465 nurse practitioner records in South Dakota.

The 8 nurse practitioner records with the nearest ZIP codes

  1. Darbi Anderson, CNPSpearfish, SD 577831932774031
  2. Phoebe Breed, CNPSpearfish, SD 577831740757475
  3. Rhonda EngelSpearfish, SD 577831720323868
  4. Lori Fritz, CNPSpearfish, SD 577831518271394
  5. Sara Gottlob, CNPSpearfish, SD 577831881668408
  6. Kerry Greear, CNPSpearfish, SD 577831497781967
  7. Jill Muth, CNPSpearfish, SD 577831619940426
  8. Janesa Ryan, NP-CSpearfish, SD 577831376195222

Common questions

What is Cathy G. Sowers, CNP's NPI number?

Cathy G. Sowers, CNP's National Provider Identifier (NPI) is 1609107788, issued on Jan 28, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Cathy G. Sowers, CNP located?

The NPPES record lists a practice address at 1420 N 10TH St, Spearfish, SD, 57783. Phone: (605) 642-8414. Providers update this record themselves, so call before visiting.

How can I verify Cathy G. Sowers, CNP's license?

NPPES lists South Dakota license number CP000586, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.

How much does Cathy G. Sowers, CNP prescribe under Medicare Part D?

In 2024, Cathy G. Sowers, CNP had 1,313 Medicare Part D claims for 201 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.

What is Cathy G. Sowers, CNP's MIPS final score?

The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.