MARY-KATE OATMAN MSN, RN, FNP
NPI 1326310160
Nurse Practitioner - Family in Mishawaka, IN
About Mary-kate Oatman Msn, Rn, Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY-KATE OATMAN MSN, RN, FNP (NPI 1326310160) is an individual family provider in Mishawaka, Indiana, licensed in Indiana (71003940A) and active in the NPI registry since February 2012. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary-kate Oatman Msn, Rn, Fnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary-kate Oatman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Granger, IN 46530
- Reassigned Medicare billing, Indiana enrollment
- 734 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 46545 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MISHAWAKA, IN 46545
MISHAWAKA, IN 46545
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 Mary-kate Oatman's NPI number?
The NPI number for Mary-kate Oatman is 1326310160. It was assigned to this individual provider in the NPPES registry on February 8, 2012.
Where is Mary-kate Oatman located?
Mary-kate Oatman practices at 250 E Day Rd, Mishawaka, IN 46545. The listed phone number is (574) 247-8769.
What is Mary-kate Oatman's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mary-kate Oatman enrolled in Medicare?
Yes. Mary-kate Oatman is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary-kate Oatman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary-kate Oatman reassigns Medicare benefits to Beacon Medical Group, Inc. (Granger, IN). The 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 Mary-kate Oatman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mary-kate Oatman was last updated on February 23, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Mary-Kate Oatman, MSN, RN, FNP · NPI 1326310160
Family physician in Mishawaka, Indiana. Individual provider, active in the CMS NPPES registry since February 8, 2012.
## Identity
- **NPI:** 1326310160 (Entity type: Individual)
- **Enumerated:** February 8, 2012
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 71003940A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 250 E DAY RD, Mishawaka, IN 46545
- **Phone:** (574) 247-8769
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Beacon Medical Group, Inc. (NPI 1306899554, Granger, IN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 23, 2021
- **Other identifiers:** Other 247000028 (IN); Medicaid 201069970 (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1326310160) · Data from the CMS NPPES public registry.