Timothy D. Marshall, PA
Medical Physician Assistant · Westminster, CO
Timothy D. Marshall, PA is a medical physician assistant with a practice address in Westminster, Colorado, and NPI 1023145091, issued on Feb 27, 2007. Check the license (Colorado 906, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Timothy D. Marshall
- Credential
- PA
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 906 CO
Self-reported in NPPES; status is on the state search - Practice location
- 7701 Sheridan Blvd, Westminster, CO 80003
- Phone
- (303) 338-4545
- Enumerated
- Feb 27, 2007
- Record last updated
- Mar 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 23037725 CO
- Medicare enrollment
- Enrolled (PECOS I20080616000631); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 1,308 in Colorado → Look up another NPI →
Also registered at 7701 Sheridan Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andreea Arvinte, MDPsychiatry Physician1164552006
- Paulanne Balch, MDFamily Medicine Physician1114054160
Verify Timothy D. Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 906Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 54% of the cost of the top drugs
607 Medicare Part D claims for 354 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Prednisone51 claims
- Amoxicillin-Clavulanate Potass35 claims
- Atorvastatin Calcium22 claims
- Triamcinolone Acetonide21 claims
- Cefuroxime19 claims
- Paxlovid19 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.
Bills Medicare through one group practice
- Colorado Permanente Medical Group PCAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy D. Marshall among 1,308 medical physician assistant records in Colorado
Timothy D. Marshall, PA is one of 1,308 medical physician assistant records with a practice address in Colorado. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 21% of them.
- NPI issued2007 · 21% of these records are older, 69% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1996 · median 2014 among the 727 with a school on file
- Record last updated2021 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in Colorado
There are 1,308 medical physician assistant records in Colorado.
All 1,308 in Colorado → Every provider in Westminster → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Timothy Lewis, PA-CWesminster, CO 800031235271495
- Donna Rummel, PAWestminster, CO 800031417121781
- Jamie Vader, PA-CArvada, CO 800031811151392
- Melaine Bertotti, PA-CArvada, CO 800041649428327
- Brian Brewer, PA-CArvada, CO 800021346818713
- Mariah DunckelArvada, CO 800021457139917
- Shannon Falbo, PA-CArvada, CO 800021285998542
- Geoffrey Slater, PA-CArvada, CO 800041588047518
Common questions
What is Timothy D. Marshall, PA's NPI number?
Timothy D. Marshall, PA's National Provider Identifier (NPI) is 1023145091, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Timothy D. Marshall, PA located?
The NPPES record lists a practice address at 7701 Sheridan Blvd, Westminster, CO, 80003. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Timothy D. Marshall, PA's license?
NPPES lists Colorado license number 906, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Timothy D. Marshall, PA prescribe under Medicare Part D?
In 2024, Timothy D. Marshall, PA had 607 Medicare Part D claims for 354 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.