Carrissa Riggs, PA
Physician Assistant · Mason City, IA
Carrissa Riggs, PA is a physician assistant with a practice address in Mason City, Iowa, and NPI 1750913406, issued on Feb 11, 2020. Check the license (Iowa 099764, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carrissa Riggs
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 099764 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1421 4TH St SW, Mason City, IA 50401
- Phone
- (641) 428-2080
- Enumerated
- Feb 11, 2020
- Record last updated
- Jul 9, 2025
- Fax
- (641) 428-5150
- Medicare enrollment
- Enrolled (PECOS I20200323002938); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,525 in Iowa → Look up another NPI →
Also registered at 1421 4TH St SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Yen Chen Liu, MDDermatology Physician1316269160
- Laura Thorson, PAPhysician Assistant1801459730
- Claire Williams, PAPhysician Assistant1629719737
Verify Carrissa Riggs in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 099764Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% more Medicare Part D claims than the average physician assistant in 2024
1,251 Medicare Part D claims for 459 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.
Most prescribed
- Triamcinolone Acetonide154 claims
- Clobetasol Propionate150 claims
- Ketoconazole143 claims
- Doxycycline Hyclate74 claims
- Hydrocortisone67 claims
- Betamethasone Diprop Augmented65 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: $30.54
2 payments; by number, the most common kind was education; the largest payer was Pfizer 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.
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
- North Iowa Mercy ClinicsMason City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Carrissa Riggs among 1,525 physician assistant records in Iowa
Carrissa Riggs, PA is one of 1,525 physician assistant records with a practice address in Iowa. 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 2020, is newer than 66% of them.
- NPI issued2020 · 66% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2019 · median 2017 among the 1,053 with a school on file
- Record last updated2025 · 41% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
34 physician assistant records list a practice address in Mason City
They are 34 of the 866 NPPES records with a practice address in Mason City, and 1,525 physician assistant records in Iowa.
All 1,525 in Iowa → Every provider in Mason City → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Luan Bargman, PAMason City, IA 504011073525010
- Donald Beitzel, P.A.Mason City, IA 504011518939982
- Gregory Blank, PAMason City, IA 504011831161736
- Chad Boyer, PA-CMason City, IA 504011265638829
- Steven Dunnick, PAMason City, IA 504011437143781
- Jean Eichmeier, PA-CMason City, IA 504011295746329
- Diane Frakes-Julius, PAMason City, IA 504011376641134
- Rachel Hupke, M.P.A.S. PA-CMason City, IA 504011992147391
Common questions
What is Carrissa Riggs, PA's NPI number?
Carrissa Riggs, PA's National Provider Identifier (NPI) is 1750913406, issued on Feb 11, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Carrissa Riggs, PA located?
The NPPES record lists a practice address at 1421 4TH St SW, Mason City, IA, 50401. Phone: (641) 428-2080. Providers update this record themselves, so call before visiting.
How can I verify Carrissa Riggs, PA's license?
NPPES lists Iowa license number 099764, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Carrissa Riggs, PA prescribe under Medicare Part D?
In 2024, Carrissa Riggs, PA had 1,251 Medicare Part D claims for 459 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.