Ashley Martinmaas, PA-C
Physician Assistant · Sioux Falls, SD
Ashley Martinmaas, PA-C is a physician assistant with a practice address in Sioux Falls, South Dakota, and NPI 1134578289, issued on Jun 9, 2016. Check the license with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ashley Martinmaas
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 1000 E 23RD St Ste 230, Sioux Falls, SD 57105
- Phone
- (605) 322-6900
- Enumerated
- Jun 9, 2016
- Record last updated
- Oct 23, 2023
- Fax
- (605) 322-3763
- Medicare enrollment
- Enrolled (PECOS I20180516000131); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 674 in South Dakota → Look up another NPI →
Also registered at 1000 E 23RD St Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ashley Martinmaas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Dakota board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average physician assistant in 2024
289 Medicare Part D claims for 74 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Eliquis57 claims
- Tagrisso20 claims
- Prednisone19 claims
- Lorazepam18 claims
- Prochlorperazine Maleate18 claims
- Levothyroxine Sodium17 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.
Industry payments in 2024: $44.59
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
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
- Avera MckennanSioux Falls, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ashley Martinmaas among 674 physician assistant records in South Dakota
Ashley Martinmaas, 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 2016, is newer than 62% of them.
- NPI issued2016 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2016 · median 2014 among the 482 with a school on file
- Record last updated2023 · 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).
245 physician assistant records list a practice address in Sioux Falls
They are 245 of the 6,563 NPPES records with a practice address in Sioux Falls, and 674 physician assistant records in South Dakota.
All 674 in South Dakota → Every provider in Sioux Falls → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Beth Amdahl, PA-CSioux Falls, SD 571051831183011
- David Axtman, MS PA-CSioux Falls, SD 571051023081668
- Karen Banken, PA-CSioux Falls, SD 571051346292489
- Billie Baxa, PACSioux Falls, SD 571051346294857
- Bonnie Bleeker, PA-CSioux Falls, SD 571051083618631
- Jason Domagalski, PASioux Falls, SD 571051710930664
- Carolyn Duenwald, PA-CSioux Falls, SD 571051720032261
- Jennifer Houwman, PA-CSioux Falls, SD 571051720084569
Common questions
What is Ashley Martinmaas, PA-C's NPI number?
Ashley Martinmaas, PA-C's National Provider Identifier (NPI) is 1134578289, issued on Jun 9, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Ashley Martinmaas, PA-C located?
The NPPES record lists a practice address at 1000 E 23RD St Ste 230, Sioux Falls, SD, 57105. Phone: (605) 322-6900. Providers update this record themselves, so call before visiting.
How can I verify Ashley Martinmaas, PA-C's license?
Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.
How much does Ashley Martinmaas, PA-C prescribe under Medicare Part D?
In 2024, Ashley Martinmaas, PA-C had 289 Medicare Part D claims for 74 beneficiaries; the average among physician assistant prescribers was 830. 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.