Tiffany R. Knudsen, PA-C
Physician Assistant · Centennial, CO
Tiffany R. Knudsen, PA-C is a physician assistant with a practice address in Centennial, Colorado, and NPI 1003189705, issued on Feb 12, 2012. Check the license (Colorado PA.0003854, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tiffany R. Knudsen
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA.0003854 CO
Self-reported in NPPES; status is on the state search - Practice location
- 5555 E Arapahoe RD, Centennial, CO 80122
- Phone
- (303) 338-4545
- Enumerated
- Feb 12, 2012
- Record last updated
- Mar 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,767 in Colorado → Look up another NPI →
Also registered at 5555 E Arapahoe RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samantha Benning, NPObstetrics & Gynecology Nurse Practitioner1518097377
- Joanna Burch, MDDermatology Physician1144323130
- Kimberly Butler, LPNLicensed Practical Nurse1023208915
Verify Tiffany R. Knudsen 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.0003854Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average physician assistant in 2024
175 Medicare Part D claims for 145 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Cefuroxime41 claims
- Nitrofurantoin Mono-Macro14 claims
- Triamcinolone Acetonide13 claims
- Paxlovid11 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.
Tiffany R. Knudsen among 3,767 physician assistant records in Colorado
Tiffany R. Knudsen, PA-C 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 2012, is newer than 37% of them.
- NPI issued2012 · 37% of these records are older, 59% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2021 · 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).
59 physician assistant records list a practice address in Centennial
They are 59 of the 3,008 NPPES records with a practice address in Centennial, and 3,767 physician assistant records in Colorado.
All 3,767 in Colorado → Every provider in Centennial → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Sharon Boyer, PACLittleton, CO 801221215167994
- Mary Cain, P.A.CLittleton, CO 801221215939095
- Linda Carr, PALittleton, CO 801221013983485
- Roy Guerrero, PACentennial, CO 801221376670307
- Thomas Harris, PA-CLittleton, CO 801221376756775
- Jessie Hockett, PA-CLittleton, CO 801221396026225
- Dayna Jaynstein, PALittleton, CO 801221932341427
- Jeffrey Laird, PALittleton, CO 801221336115948
Common questions
What is Tiffany R. Knudsen, PA-C's NPI number?
Tiffany R. Knudsen, PA-C's National Provider Identifier (NPI) is 1003189705, issued on Feb 12, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Tiffany R. Knudsen, PA-C located?
The NPPES record lists a practice address at 5555 E Arapahoe RD, Centennial, CO, 80122. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Tiffany R. Knudsen, PA-C's license?
NPPES lists Colorado license number PA.0003854, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Tiffany R. Knudsen, PA-C prescribe under Medicare Part D?
In 2024, Tiffany R. Knudsen, PA-C had 175 Medicare Part D claims for 145 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.