DR. MARK ALAN FERNANDEZ D.D.S.
NPI 1245250224
Dentist - Pediatric Dentistry in Saint Louis, MO
About Dr. Mark Alan Fernandez D.d.s. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK ALAN FERNANDEZ D.D.S. (NPI 1245250224) is an individual pediatric dentistry provider in Saint Louis, Missouri, licensed in Missouri (2006012739) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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 Alan Fernandez D.d.s. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mark Fernandez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 744 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 435 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 63127 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.
SAINT LOUIS, MO 63127
SAINT LOUIS, MO 63127
SAINT LOUIS, MO 63127
SAINT LOUIS, MO 63127
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 Fernandez's NPI number?
The NPI number for Mark Fernandez is 1245250224. It was assigned to this individual provider in the NPPES registry on July 20, 2006.
Where is Mark Fernandez located?
Mark Fernandez practices at 3555 Sunset Office Dr Suite 210, Saint Louis, MO 63127. The listed phone number is (314) 822-2764.
What is Mark Fernandez's specialty?
The primary specialty registered for this NPI is Dentist, specializing in Pediatric Dentistry, with taxonomy code 1223P0221X.
Is Mark Fernandez enrolled in Medicare?
Yes. Mark Fernandez is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Fernandez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Fernandez reassigns Medicare benefits to 2 organizations: Mercy Clinic East Communities (Saint Louis, MO) and Mercy Hospitals East Communities (Saint Louis, MO). 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 Fernandez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Fernandez accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 1 other insurer list Mark Fernandez 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 Fernandez was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 Alan Fernandez, D.D.S. · NPI 1245250224
Pediatric Dentistry provider in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 20, 2006.
## Identity
- **NPI:** 1245250224 (Entity type: Individual)
- **Enumerated:** July 20, 2006
- **Primary specialty:** Dentist - Pediatric Dentistry · taxonomy 1223P0221X
- **State license:** 2006012739 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 3555 SUNSET OFFICE DR, SUITE 210, Saint Louis, MO 63127-1015
- **Phone:** (314) 822-2764 · **Fax:** (314) 822-5758
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mercy Clinic East Communities (NPI 1720635329, Saint Louis, MO); Mercy Hospitals East Communities (NPI 1851431738, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1245250224) · Data from the CMS NPPES public registry.