DR. LARRY DOUGLAS SUMNER O.D.
NPI 1245255223
Optometrist - Corneal and Contact Management in Denver, CO
About Dr. Larry Douglas Sumner O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LARRY DOUGLAS SUMNER O.D. (NPI 1245255223) is an individual corneal and contact management provider in Denver, Colorado, licensed in Colorado (1582) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through May 24, 2028, and is a graduate of Pennsylvania College Of Optometry (1973).
NPPES Registry Identity
Specialties & Licenses
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. Larry Douglas Sumner O.d. 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
2Medicare enrollment records show Larry Sumner reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Denver, CO 80222
- Reassigned Medicare billing, Colorado enrollment
- 70 clinicians in this Medicare group
Lakewood, CO 80226
- Reassigned Medicare billing, Colorado enrollment
- 37 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.
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 of Waiver 06D2041668
Larry D Sumner Od, PC · Denver, COAreas 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80209 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 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DENVER, CO 80209
DENVER, CO 80209
DENVER, CO 80209
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 Larry Sumner's NPI number?
The NPI number for Larry Sumner is 1245255223. It was assigned to this individual provider in the NPPES registry on July 12, 2006.
Where is Larry Sumner located?
Larry Sumner practices at 3400 E Bayaud Ave Suite 485, Denver, CO 80209. The listed phone number is (303) 321-1606.
What is Larry Sumner's specialty?
The primary specialty registered for this NPI is Optometrist, specializing in Corneal and Contact Management, with taxonomy code 152WC0802X.
Is Larry Sumner enrolled in Medicare?
Yes. Larry Sumner 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 Larry Sumner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Larry Sumner reassigns Medicare benefits to 2 organizations: One Hour Optical Medical Services, PC (Denver, CO) and Sowash Optometry Group PC (Lakewood, CO). 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 Larry Sumner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Does Larry Sumner hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 06D2041668) is associated with this NPI, valid through May 24, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Larry Sumner accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 3 other insurers list Larry Sumner 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 Larry Sumner was last updated on December 19, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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. Larry Douglas Sumner, O.D. · NPI 1245255223
Corneal and Contact Management provider in Denver, Colorado. Individual provider, active in the CMS NPPES registry since July 12, 2006.
## Identity
- **NPI:** 1245255223 (Entity type: Individual)
- **Enumerated:** July 12, 2006
- **Primary specialty:** Optometrist - Corneal and Contact Management · taxonomy 152WC0802X
- **State license:** 1582 (Colorado)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3400 E BAYAUD AVE, SUITE 485, Denver, CO 80209-2926
- **Phone:** (303) 321-1606 · **Fax:** (303) 321-0920
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): One Hour Optical Medical Services, PC (NPI 1770648297, Denver, CO); Sowash Optometry Group PC (NPI 1336172055, Lakewood, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Pennsylvania College Of Optometry, class of 1973
## Record status
- **NPPES last updated:** December 19, 2012
- **Other identifiers:** Medicare PIN 44033 (CO)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1245255223) · Data from the CMS NPPES public registry.