NPPES file of Aug 9, 2026

Erik Shaun Simon, PA-C

Physician Assistant · Watertown, SD

Erik Shaun Simon, PA-C is a physician assistant with a practice address in Watertown, South Dakota, and NPI 1851630727, issued on Feb 12, 2013. Check the license 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
1851630727
Name
Erik Shaun Simon
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
Practice location
901 4TH St NW, Watertown, SD 57201
Phone
(605) 886-8471
Enumerated
Feb 12, 2013
Record last updated
Jul 10, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(605) 886-9317
Medicare enrollment
Enrolled (PECOS I20130425000176); accepts Medicare assignment
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 901 4TH St NW

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

  1. Nina BishopPediatrics Physician1477973774
  2. Jennifer Byer, PA-CPhysician Assistant1487973525
  3. Roger Carter, MDSurgery Physician1225017809
  4. Alan Christensen, MDSurgery Physician1023097565
  5. Robert Crank, MDDiagnostic Radiology Physician1669451100
  6. Samantha Darnall-Werlinger, MDFamily Medicine Physician1952898447

Verify Erik Shaun Simon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich South Dakota board licenses this professionCheck 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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4.9 times the Medicare Part D claims of the average physician assistant in 2024

4,065 Medicare Part D claims for 373 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 47 claims were for opioids.

  1. Erik Simon4,065
  2. Specialty average830

Most prescribed

  1. Atorvastatin Calcium258 claims
  2. Amlodipine Besylate174 claims
  3. Lisinopril152 claims
  4. Levothyroxine Sodium147 claims
  5. Metformin Hcl119 claims
  6. Omeprazole119 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 practice group's MIPS final score for 2023 (Medicare payment program): 76.7 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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 score78.6
  2. Costout of 100 · 30%44.6
  3. Promoting interoperabilityout of 100 · 25%99.0
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $153.49

2 payments; by number, the most common kind was education; the largest payer was Medtronic, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Erik Simon$153.49
  2. Specialty average$841.65

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. Sanford Medical CenterSioux Falls, SD

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

Erik Shaun Simon among 674 physician assistant records in South Dakota

Erik Shaun Simon, PA-C is one of 674 physician assistant records with a practice address in South Dakota. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 50% of them.

  • NPI issued2013 · 50% of these records are older, 47% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2012 · median 2014 among the 482 with a school on file
  • Record last updated2020 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

15 physician assistant records list a practice address in Watertown

They are 15 of the 543 NPPES records with a practice address in Watertown, and 674 physician assistant records in South Dakota.

The 8 physician assistant records with the nearest ZIP codes

  1. Joseph Bretschneider, PA-CWatertown, SD 572011750831632
  2. Jennifer Byer, PA-CWatertown, SD 572011487973525
  3. Bailley Danforth, PA-CWatertown, SD 572011184348807
  4. Kari Jo Fleming, PA-CWatertown, SD 572011316284839
  5. Elizabeth Johnson, P.A.Watertown, SD 572011972538650
  6. Rachel Leiseth, PAWatertown, SD 572011699327262
  7. Kahley Meyer, PA-CWatertown, SD 572011356844385
  8. Rachel Montileaux, PA-CWatertown, SD 572011588329585

Common questions

What is Erik Shaun Simon, PA-C's NPI number?

Erik Shaun Simon, PA-C's National Provider Identifier (NPI) is 1851630727, issued on Feb 12, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Erik Shaun Simon, PA-C located?

The NPPES record lists a practice address at 901 4TH St NW, Watertown, SD, 57201. Phone: (605) 886-8471. Providers update this record themselves, so call before visiting.

How can I verify Erik Shaun Simon, PA-C's license?

Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.

How much does Erik Shaun Simon, PA-C prescribe under Medicare Part D?

In 2024, Erik Shaun Simon, PA-C had 4,065 Medicare Part D claims for 373 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Erik Shaun Simon, PA-C's MIPS final score?

The 2023 MIPS final score is 76.7 of 100, reported for the practice group. 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.