MARK L SIEFKES OD
NPI 1285793786
Optometrist in Overland Park, KS
About Mark L Siefkes Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK L SIEFKES OD (NPI 1285793786) is an individual optometrist in Overland Park, Kansas, licensed in Kansas (1539) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Missouri St Louis - School Of Optometry (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 14
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
Mark L Siefkes Od 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
8Medicare enrollment records show Mark Siefkes reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Overland Park, KS 66213
- Reassigned Medicare billing, Kansas enrollment
- 17 clinicians in this Medicare group
Olathe, KS 66062
- Reassigned Medicare billing, Kansas enrollment
- 17 clinicians in this Medicare group
Overland Park, KS 66212
- Reassigned Medicare billing, Kansas enrollment
- 17 clinicians in this Medicare group
Leawood, KS 66223
- Reassigned Medicare billing, Kansas enrollment
- 16 clinicians in this Medicare group
Overland Park, KS 66223
- Reassigned Medicare billing, Kansas enrollment
- 16 clinicians in this Medicare group
Olathe, KS 66062
- Reassigned Medicare billing, Kansas enrollment
- 17 clinicians in this Medicare group
Prairie Village, KS 66208
- Reassigned Medicare billing, Kansas enrollment
- 17 clinicians in this Medicare group
Shawnee, KS 66217
- Reassigned Medicare billing, Kansas enrollment
- 17 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 4
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 66213 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.
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 Siefkes's NPI number?
The NPI number for Mark Siefkes is 1285793786. It was assigned to this individual provider in the NPPES registry on December 8, 2006.
Where is Mark Siefkes located?
Mark Siefkes practices at 10120 W 119th St, Overland Park, KS 66213. The listed phone number is (913) 339-9090.
What is Mark Siefkes's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Mark Siefkes enrolled in Medicare?
Yes. Mark Siefkes 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 Mark Siefkes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Siefkes reassigns Medicare benefits to 8 organizations: Eye Associates Of Overland Park PA (Overland Park, KS), Eye Associates Of Olathe PA (Olathe, KS), Eye Associates Of North Overland Park (Overland Park, KS), Eye Associates Of Leawood PA (Leawood, KS), Eye Associates Of South Overland Park (Overland Park, KS) and 3 more organizations, listed in the Medicare section above. 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 Mark Siefkes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Siefkes accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Sunflower Health Plan, Ambetter of Oklahoma and Anthem Blue Cross and Blue Shield and 15 other insurers list Mark Siefkes 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 Mark Siefkes was last updated on April 20, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Mark L Siefkes, OD · NPI 1285793786
Optometrist provider in Overland Park, Kansas. Individual provider, active in the CMS NPPES registry since December 8, 2006.
## Identity
- **NPI:** 1285793786 (Entity type: Individual)
- **Enumerated:** December 8, 2006
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 1539 (Kansas)
- **Sole proprietor:** No
## Practice location
- **Address:** 10120 W 119TH ST, Overland Park, KS 66213
- **Phone:** (913) 339-9090 · **Fax:** (913) 339-6417
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Eye Associates Of Overland Park PA (NPI 1316009129, Overland Park, KS); Eye Associates Of Olathe PA (NPI 1245392059, Olathe, KS); Eye Associates Of North Overland Park (NPI 1932856994, Overland Park, KS); Eye Associates Of Leawood PA (NPI 1043331622, Leawood, KS); Eye Associates Of South Overland Park (NPI 1417495797, Overland Park, KS); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Missouri St Louis - School Of Optometry, class of 1998
## Record status
- **NPPES last updated:** April 20, 2009
- **Other identifiers:** Other 5109645 (KS); Other 25757025 (MO); Other R188660 (KS); and 11 more
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Source: [NPI Profile](https://npiprofile.com/npi/1285793786) · Data from the CMS NPPES public registry.