Catherine Amy Siman
Physician Assistant · Fort Collins, CO
Catherine Amy Siman is a physician assistant with a practice address in Fort Collins, Colorado, and NPI 1558129031, issued on Mar 11, 2024. Check the license (Colorado PA.0008653, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine Amy Siman
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA.0008653 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1001 E Harmony RD # A103, Fort Collins, CO 80525
- Phone
- (970) 237-2239
- Enumerated
- Mar 11, 2024
- Record last updated
- Feb 26, 2025
- Medicare enrollment
- Enrolled (PECOS I20250328002958); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2024
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,767 in Colorado → Look up another NPI →
Verify Catherine Amy Siman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license PA.0008653Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Poudre Valley Medical Group LLCFort Collins, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Amy Siman among 3,767 physician assistant records in Colorado
Catherine Amy Siman is one of 3,767 physician assistant records with a practice address in Colorado. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 89% of them.
- NPI issued2024 · 89% of these records are older, 6% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2024 · median 2017 among the 2,351 with a school on file
- Record last updated2025 · 40% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
187 physician assistant records list a practice address in Fort Collins
They are 187 of the 6,928 NPPES records with a practice address in Fort Collins, and 3,767 physician assistant records in Colorado.
All 3,767 in Colorado → Every provider in Fort Collins → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Debra Dennis, PA-CFort Collins, CO 805251134341209
- Daniella Deperi, PA-CFort Collins, CO 805251750553152
- David Gaida, PA-CFort Collins, CO 805251447203443
- Kristine Housley, PA-CFort Collins, CO 805251982873097
- Tawnya Lane, P.A.Fort Collins, CO 805251245321066
- Emily Leibow, PA-CFort Collins, CO 805251124090410
- Kathryn Lovoi, PA-CFort Collins, CO 805251861612608
- Carri Miller, PA-CFort Collins, CO 805251437171428
Common questions
What is Catherine Amy Siman's NPI number?
Catherine Amy Siman's National Provider Identifier (NPI) is 1558129031, issued on Mar 11, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Amy Siman located?
The NPPES record lists a practice address at 1001 E Harmony RD # A103, Fort Collins, CO, 80525. Phone: (970) 237-2239. Providers update this record themselves, so call before visiting.
How can I verify Catherine Amy Siman's license?
NPPES lists Colorado license number PA.0008653, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity 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.