What is Mark Foster's NPI number?

Mark Foster's National Provider Identifier (NPI) is 1639168479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Foster's specialty?

Mark Foster is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Mark Foster located?

Mark Foster's practice location on file with NPPES is 1942 E Main St, Cortez, CO 81321-3039.

What is Mark Foster's phone number?

The practice phone number listed in the NPPES registry for Mark Foster is (970) 516-5500.

Does Mark Foster accept Medicare?

Mark Foster is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mark Foster's NPI active?

Yes — Mark Foster's NPI (1639168479) is active in the NPPES registry as of the last update on 2025-06-17.

IndividualActiveAccepts Medicare

Mark Foster, PA

NPI 1639168479 · Physician Assistant · Cortez, CO

Mark Foster, PA is a Physician Assistant provider in Cortez, CO (NPI 1639168479).

Provider details

NPI number: 1639168479
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA
Sex: Male
Sole proprietor: No
License: 1467

Practice location

1942 E Main St

Cortez, CO 81321-3039

Phone: (970) 516-5500

Fax: (970) 516-2500

Street-level locationGet directions

More CO providers

Mailing address

2577 Main Ave

Durango, CO 81301-5919

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense 1467
Physician Assistants & Advanced Practice Nursing Providers

Additional practice locations (1)

1010 Three Springs Blvd
Durango, CO 81301-8296
Phone: (970) 247-4311

Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(79/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
21 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
390 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203	67	$97
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	67	$79
New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204	49	$145
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	37	$112
Emergency Department Visit With High Level of Medical Decision Making99285	37	$146
Emergency Department Visit With Moderate Level of Medical Decision Making

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Azithromycin	38	37
Cephalexin	37	37
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	15	15
Prednisone	14	13

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2005-10-14
Last updated: 2025-06-17
Certified: 2025-06-17

Frequently asked questions

What is Mark Foster's NPI number?: Mark Foster's National Provider Identifier (NPI) is 1639168479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Foster's specialty?: Mark Foster is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Mark Foster located?: Mark Foster's practice location on file with NPPES is 1942 E Main St, Cortez, CO 81321-3039.
What is Mark Foster's phone number?: The practice phone number listed in the NPPES registry for Mark Foster is (970) 516-5500.
Does Mark Foster accept Medicare?: Mark Foster is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Mark Foster's NPI active?: Yes — Mark Foster's NPI (1639168479) is active in the NPPES registry as of the last update on 2025-06-17.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203	67	$97
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	67	$79
New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204	49	$145
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	37	$112
Emergency Department Visit With High Level of Medical Decision Making99285	37	$146
Emergency Department Visit With Moderate Level of Medical Decision Making

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Azithromycin	38	37
Cephalexin	37	37
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	15	15
Prednisone	14	13

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)