JAY EDWARD MAST MD
NPI 1447516620
Internal Medicine in Indianapolis, IN
About Jay Edward Mast Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAY EDWARD MAST MD (NPI 1447516620) is an individual internal medicine provider in Indianapolis, Indiana, licensed in Indiana (01075088A) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS, is affiliated with Ascension St Vincent Kokomo, and is a graduate of Indiana University School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses 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
Jay Edward Mast Md 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 Reassignment
Medicare enrollment records show Jay Mast reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Indianapolis, IN 46260
- Reassigned Medicare billing, Indiana enrollment
- 510 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 3
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension St Vincent Kokomo
Acute Care Hospitals · Kokomo, INAscension St Vincent Hospital
Acute Care Hospitals · Indianapolis, INAscension St Vincent Anderson
Acute Care Hospitals · Anderson, INWitham Health Services
Acute Care Hospitals · Lebanon, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46260 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.
INDIANAPOLIS, IN 46260
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 Jay Mast's NPI number?
The NPI number for Jay Mast is 1447516620. It was assigned to this individual provider in the NPPES registry on April 2, 2012.
Where is Jay Mast located?
Jay Mast practices at 2001 W 86th St, Indianapolis, IN 46260. The listed phone number is (317) 338-2345.
What is Jay Mast's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Jay Mast enrolled in Medicare?
Yes. Jay Mast 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 organization bills Medicare for Jay Mast's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jay Mast reassigns Medicare benefits to St Vincent Physician Services Hospital And Health Care Center (Indianapolis, 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 Jay Mast's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jay Mast accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and CareSource list Jay Mast 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 Jay Mast affiliated with any hospitals?
According to CMS data, Jay Mast is affiliated with Ascension St Vincent Kokomo, Ascension St Vincent Hospital, Ascension St Vincent Anderson and Witham Health Services.
When was this NPI record last updated?
The NPPES record for Jay Mast was last updated on June 1, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Jay Edward Mast, MD · NPI 1447516620
Internal Medicine physician in Indianapolis, Indiana. Individual provider, active in the CMS NPPES registry since April 2, 2012.
## Identity
- **NPI:** 1447516620 (Entity type: Individual)
- **Enumerated:** April 2, 2012
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 01075088A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 2001 W 86TH ST, Indianapolis, IN 46260-1902
- **Phone:** (317) 338-2345
## 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:** St Vincent Physician Services Hospital And Health Care Center (NPI 1669422234, Indianapolis, IN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Indiana University School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** June 1, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1447516620) · Data from the CMS NPPES public registry.