Mark James Foster, PA
Physician Assistant · Cortez, CO
Mark James Foster, PA is a physician assistant with a practice address in Cortez, Colorado, and NPI 1639168479, issued on Oct 14, 2005. Check the license with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark James Foster
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 1942 E Main St, Cortez, CO 81321
- Phone
- (970) 516-5500
- Enumerated
- Oct 14, 2005
- Record last updated
- Jun 26, 2026
- Fax
- (970) 516-2500
- Medicaid IDs
- 750077 AZ
48529222 CO
43856560 NM - Medicare enrollment
- Enrolled (PECOS I20060111000381); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,767 in Colorado → Look up another NPI →
Verify Mark James Foster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado 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
71% fewer Medicare Part D claims than the average physician assistant in 2024
242 Medicare Part D claims for 176 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin38 claims
- Cephalexin37 claims
- Amoxicillin-Clavulanate Potass15 claims
- Prednisone14 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
- Durango Urgent Care LLCCortez, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark James Foster among 3,767 physician assistant records in Colorado
Mark James Foster, PA 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 96% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2000 · median 2017 among the 2,351 with a school on file
- Record last updated2026 · 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).
8 physician assistant records list a practice address in Cortez
They are 8 of the 329 NPPES records with a practice address in Cortez, and 3,767 physician assistant records in Colorado.
All 3,767 in Colorado → Every provider in Cortez → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Leanne Buck, PA CCortez, CO 813211407832116
- Kay Christian, PACCortez, CO 813211558435222
- Andrew Henrichs, PA-C, ATCCortez, CO 813211922037381
- Korby Howell, PA-CCortez, CO 813211447743257
- Erick Ireland, PA-CCortez, CO 813211750825964
- Caitlin Mooney, PA-CCortez, CO 813211295209211
- Jonathan Shepard, PA-CCortez, CO 813211205174174
- Rakhat AshymovDolores, CO 813231063813327
Common questions
What is Mark James Foster, PA's NPI number?
Mark James Foster, PA's National Provider Identifier (NPI) is 1639168479, issued on Oct 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark James Foster, PA located?
The NPPES record lists a practice address at 1942 E Main St, Cortez, CO, 81321. Phone: (970) 516-5500. Providers update this record themselves, so call before visiting.
How can I verify Mark James Foster, PA's license?
Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Mark James Foster, PA prescribe under Medicare Part D?
In 2024, Mark James Foster, PA had 242 Medicare Part D claims for 176 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.