DR. MARK C. DARLING
NPI 1972717403
Chiropractor in Fort Collins, CO
About Dr. Mark C. Darling NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK C. DARLING (NPI 1972717403) is an individual chiropractor in Fort Collins, Colorado, licensed in Colorado (5015) and active in the NPI registry since May 2007. He is a graduate of Life Chiropractic College (2001).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Mark C. Darling is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mark Darling reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fort Collins, CO 80525
- Reassigned Medicare billing, Colorado enrollment
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
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.
Other Providers at the Same Location NPPES
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 Mark Darling's NPI number?
The NPI number for Mark Darling is 1972717403. It was assigned to this individual provider in the NPPES registry on May 10, 2007.
Where is Mark Darling located?
Mark Darling practices at 132 W Troutman Pkwy, Fort Collins, CO 80525. The listed phone number is (970) 223-3335.
What is Mark Darling's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Mark Darling enrolled in Medicare?
Yes. Mark Darling is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mark Darling's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Darling reassigns Medicare benefits to Lifespan Family Chiropractic, LLC (Fort Collins, CO). The 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 Mark Darling's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mark Darling was last updated on July 7, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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. Mark C. Darling · NPI 1972717403
Chiropractor provider in Fort Collins, Colorado. Individual provider, active in the CMS NPPES registry since May 10, 2007.
## Identity
- **NPI:** 1972717403 (Entity type: Individual)
- **Enumerated:** May 10, 2007
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 5015 (Colorado)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 132 W TROUTMAN PKWY, Fort Collins, CO 80525-5967
- **Phone:** (970) 223-3335
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** Lifespan Family Chiropractic, LLC (NPI 1114316957, Fort Collins, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Life Chiropractic College, class of 2001
## Record status
- **NPPES last updated:** July 7, 2008
- **Other identifiers:** Medicare PIN C803137 (CO); Medicare UPIN V06584 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1972717403) · Data from the CMS NPPES public registry.