DR. GRETCHEN EVANS MD, MPH
NPI 1184144230
Internal Medicine - Gastroenterology in Greeley, CO
About Dr. Gretchen Evans Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GRETCHEN EVANS MD, MPH (NPI 1184144230) is an individual gastroenterology provider in Greeley, Colorado, licensed in Colorado (DR0073055) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS and is a graduate of Drexel University College Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Gretchen Evans Md, Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Gretchen Evans reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Greeley, CO 80631
- Reassigned Medicare billing, Colorado enrollment
- 324 clinicians in this Medicare group
Greeley, CO 80634
- Reassigned Medicare billing, Colorado enrollment
- 163 clinicians in this Medicare group
Los Angeles, CA 90033
- Reassigned Medicare billing, California enrollment
- 2,445 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80631 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gretchen Evans's NPI number?
The NPI number for Gretchen Evans is 1184144230. It was assigned to this individual provider in the NPPES registry on June 20, 2017.
Where is Gretchen Evans located?
Gretchen Evans practices at 1801 16th St, Greeley, CO 80631. The listed phone number is (970) 810-4475.
What is Gretchen Evans's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Gretchen Evans enrolled in Medicare?
Yes. Gretchen Evans is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Gretchen Evans's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gretchen Evans reassigns Medicare benefits to 3 organizations: Banner Health Physicians Colorado LLC (Greeley, CO), Banner Hospital Based Physicians Colorado LLC (Greeley, CO) and Usc Care Medical Group, Inc (Los Angeles, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gretchen Evans's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gretchen Evans accept?
Health plans from Medica list Gretchen Evans as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Gretchen Evans was last updated on June 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Gretchen Evans, MD, MPH · NPI 1184144230
Gastroenterology physician in Greeley, Colorado. Individual provider, active in the CMS NPPES registry since June 20, 2017.
## Identity
- **NPI:** 1184144230 (Entity type: Individual)
- **Enumerated:** June 20, 2017
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** DR0073055 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 1801 16TH ST, Greeley, CO 80631-5154
- **Phone:** (970) 810-4475
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Banner Health Physicians Colorado LLC (NPI 1306114475, Greeley, CO); Banner Hospital Based Physicians Colorado LLC (NPI 1821336769, Greeley, CO); Usc Care Medical Group, Inc (NPI 1902846306, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Drexel University College Of Medicine, class of 2017
## Record status
- **NPPES last updated:** June 18, 2025
- **Other identifiers:** Medicaid 2019042328 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1184144230) · Data from the CMS NPPES public registry.