DR. TRACY LYON MD
NPI 1548686751
Obstetrics & Gynecology in Littleton, CO
About Dr. Tracy Lyon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TRACY LYON MD (NPI 1548686751) is an individual obstetrics & gynecology provider in Littleton, Colorado, licensed in Colorado (CDR.2300) and active in the NPI registry since March 2014. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Baylor College Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 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. Tracy Lyon Md 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 Tracy Lyon reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Littleton, CO 80122
- Reassigned Medicare billing, Colorado enrollment
- 733 clinicians in this Medicare group
Littleton, CO 80122
- Reassigned Medicare billing, Colorado enrollment
- 61 clinicians in this Medicare group
Tyler, TX 75702
- Reassigned Medicare billing, Texas enrollment
- 2,745 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80122 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.
LITTLETON, CO 80122
LITTLETON, CO 80122
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 Tracy Lyon's NPI number?
The NPI number for Tracy Lyon is 1548686751. It was assigned to this individual provider in the NPPES registry on March 12, 2014.
Where is Tracy Lyon located?
Tracy Lyon practices at 7700 S Broadway, Littleton, CO 80122. The listed phone number is (303) 730-5830.
What is Tracy Lyon's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Tracy Lyon enrolled in Medicare?
Yes. Tracy Lyon 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 Tracy Lyon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tracy Lyon reassigns Medicare benefits to 3 organizations: Portercare Adventist Health System (Littleton, CO), Questcare Obstetrics Colorado LLC (Littleton, CO) and Christus Trinity Clinic Texas (Tyler, TX). 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 Tracy Lyon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tracy Lyon accept?
Health plans from Molina Healthcare list Tracy Lyon 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 Tracy Lyon was last updated on November 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Tracy Lyon, MD · NPI 1548686751
Obstetrics & Gynecology physician in Littleton, Colorado. Individual provider, active in the CMS NPPES registry since March 12, 2014.
## Identity
- **NPI:** 1548686751 (Entity type: Individual)
- **Enumerated:** March 12, 2014
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** CDR.2300 (Colorado)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 7700 S BROADWAY, Littleton, CO 80122-2602
- **Phone:** (303) 730-5830 · **Fax:** (303) 734-3933
## 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): Portercare Adventist Health System (NPI 1164389177, Littleton, CO); Questcare Obstetrics Colorado LLC (NPI 1275130338, Littleton, CO); Christus Trinity Clinic Texas (NPI 1285684225, Tyler, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Baylor College Of Medicine, class of 1996
## Record status
- **NPPES last updated:** November 4, 2025
- **Other identifiers:** Medicaid 336954803 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1548686751) · Data from the CMS NPPES public registry.