FOUR CORNERS OB/GYN
NPI 1861503948
Specialist in Durango, CO
About Four Corners Ob/gyn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
FOUR CORNERS OB/GYN (NPI 1861503948) is a healthcare organization registered as a specialist in Durango, Colorado and active in the NPI registry since August 2006. The organization holds a CLIA Microscopy certificate valid through September 19, 2028, maintains 2 additional practice locations, and lists Ruth Olbert, Admin. Assist, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Four Corners Ob/gyn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
11Medicare enrollment records show 11 clinicians reassign Medicare billing to Four Corners Ob/Gyn, which bills Medicare for the services they deliver. Of these, 10 practice within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 2
Clinicians, nearest first (11)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate for Provider-Performed Microscopy Procedures (PPMP) 06D0939918
Four Corners Ob/Gyn · Durango, COFrequently 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 Four Corners Ob/Gyn's NPI number?
The NPI number for Four Corners Ob/Gyn is 1861503948. It was assigned to this organization in the NPPES registry on August 31, 2006.
Where is Four Corners Ob/Gyn located?
Four Corners Ob/Gyn is located at 1 Mercado St Suite # 105, Durango, CO 81301. The listed phone number is (970) 382-8800.
What is Four Corners Ob/Gyn's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Four Corners Ob/Gyn enrolled in Medicare?
Yes. Four Corners Ob/Gyn is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Four Corners Ob/Gyn?
According to the CMS Revalidation Reassignment List (October 2026 release), 11 clinicians in 2 Medicare specialties reassign their Medicare billing to Four Corners Ob/Gyn. A 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 the clinician's services. The largest specialties are Obstetrics/Gynecology (9) and Nurse Practitioner (2). Of these, 10 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Four Corners Ob/Gyn hold a CLIA laboratory certificate?
Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 06D0939918) is associated with this NPI, valid through September 19, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Four Corners Ob/Gyn was last updated on July 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Four Corners Ob/gyn · NPI 1861503948
Specialist organization in Durango, Colorado. Organization record, active in the CMS NPPES registry since August 31, 2006.
## Identity
- **NPI:** 1861503948 (Entity type: Organization)
- **Enumerated:** August 31, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Organization subpart:** No
- **Authorized official:** Ruth Olbert, ADMIN. ASSIST
## Practice location
- **Address:** 1 MERCADO ST, SUITE # 105, Durango, CO 81301-7300
- **Phone:** (970) 382-8800 · **Fax:** (970) 382-0122
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 11 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Obstetrics/Gynecology (9), Nurse Practitioner (2); 10 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 20, 2026
- **Other identifiers:** Medicaid O4021754 (CO)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1861503948) · Data from the CMS NPPES public registry.