DR. RICHARD K BAKER DNP, NP-C
NPI 1285621847
Nurse Practitioner - Family in Ellisville, MO
About Dr. Richard K Baker Dnp, Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RICHARD K BAKER DNP, NP-C (NPI 1285621847) is an individual family provider in Ellisville, Missouri, licensed in Missouri (143182) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Washington, and maintains a secondary practice location in Springfield.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
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. Richard K Baker Dnp, Np-c 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
11Medicare enrollment records show Richard Baker reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 169 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 263 clinicians in this Medicare group
Alton, IL 62002
- Reassigned Medicare billing, Illinois enrollment
- 42 clinicians in this Medicare group
Belleville, IL 62226
- Reassigned Medicare billing, Illinois enrollment
- 982 clinicians in this Medicare group
O Fallon, IL 62269
- Reassigned Medicare billing, Illinois enrollment
- 119 clinicians in this Medicare group
Maryville, IL 62062
- Reassigned Medicare billing, Illinois enrollment
- 124 clinicians in this Medicare group
Staunton, IL 62088
- Reassigned Medicare billing, Illinois enrollment
- 121 clinicians in this Medicare group
Sparta, IL 62286
- Reassigned Medicare billing, Illinois enrollment
- 67 clinicians in this Medicare group
Nashville, IL 62263
- Reassigned Medicare billing, Illinois enrollment
- 33 clinicians in this Medicare group
Centralia, IL 62801
- Reassigned Medicare billing, Illinois enrollment
- 69 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 7
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Washington
Acute Care Hospitals · Washington, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63011 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
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 Richard Baker's NPI number?
The NPI number for Richard Baker is 1285621847. It was assigned to this individual provider in the NPPES registry on September 29, 2005.
Where is Richard Baker located?
Richard Baker practices at 1326 Clarkson Clayton Ctr, Ellisville, MO 63011. The listed phone number is (314) 293-4410.
What is Richard Baker's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Richard Baker enrolled in Medicare?
Yes. Richard Baker 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 Richard Baker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Richard Baker reassigns Medicare benefits to 11 organizations: Mercy East Ambulatory Services LLC (Chesterfield, MO), Mercy Aco Clinical Services Inc (Chesterfield, MO), Alton-Griffin Emergency Group PC (Alton, IL), Cepamerica Illinois LLP (Belleville, IL), Vituity - Illinois Auc LLP (O Fallon, IL) and 6 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 Richard Baker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Richard Baker accept?
Health plans from Anthem Blue Cross and Blue Shield list Richard Baker 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.
Is Richard Baker affiliated with any hospitals?
According to CMS data, Richard Baker is affiliated with Mercy Hospital Washington.
When was this NPI record last updated?
The NPPES record for Richard Baker was last updated on January 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Richard K Baker, DNP, NP-C · NPI 1285621847
Family physician in Ellisville, Missouri. Individual provider, active in the CMS NPPES registry since September 29, 2005.
## Identity
- **NPI:** 1285621847 (Entity type: Individual)
- **Enumerated:** September 29, 2005
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 143182 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1326 CLARKSON CLAYTON CTR, Ellisville, MO 63011-2145
- **Phone:** (314) 293-4410 · **Fax:** (314) 293-4412
## 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:** 11 organizations under Medicare reassignment (form CMS-855R): Mercy East Ambulatory Services LLC (NPI 1134673148, Chesterfield, MO); Mercy Aco Clinical Services Inc (NPI 1063965093, Chesterfield, MO); Alton-Griffin Emergency Group PC (NPI 1891104824, Alton, IL); Cepamerica Illinois LLP (NPI 1992082689, Belleville, IL); Vituity - Illinois Auc LLP (NPI 1487142022, O Fallon, IL); and 6 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** January 17, 2023
- **Other identifiers:** Other P00360425; Medicaid 427525902 (MO)
---
Source: [NPI Profile](https://npiprofile.com/npi/1285621847) · Data from the CMS NPPES public registry.