MATTHEW P CASTNER DO
NPI 1346259116
Internal Medicine in Tavares, FL
About Matthew P Castner Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW P CASTNER DO (NPI 1346259116) is an individual internal medicine provider in Tavares, Florida, licensed in Florida (0S6305) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Matthew P Castner Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Matthew Castner reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Spokane, WA 99204
- Reassigned Medicare billing, Washington enrollment
- 915 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 32778 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.
TAVARES, FL 32778
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 Matthew Castner's NPI number?
The NPI number for Matthew Castner is 1346259116. It was assigned to this individual provider in the NPPES registry on August 7, 2006.
Where is Matthew Castner located?
Matthew Castner practices at 1000 Waterman Way, Tavares, FL 32778. The listed phone number is (352) 636-2286.
What is Matthew Castner's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Matthew Castner enrolled in Medicare?
Yes. Matthew Castner is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Matthew Castner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Castner reassigns Medicare benefits to South Sound Inpatient Physicians PLLC (Spokane, WA). 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 Matthew Castner'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 Matthew Castner was last updated on March 7, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Matthew P Castner, DO · NPI 1346259116
Internal Medicine physician in Tavares, Florida. Individual provider, active in the CMS NPPES registry since August 7, 2006.
## Identity
- **NPI:** 1346259116 (Entity type: Individual)
- **Enumerated:** August 7, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 0S6305 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 WATERMAN WAY, Tavares, FL 32778
- **Phone:** (352) 636-2286
## 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:** South Sound Inpatient Physicians PLLC (NPI 1275785107, Spokane, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 7, 2016
- **Other identifiers:** Medicaid 374791300 (FL); Medicare PIN 80709X (FL); Medicare PIN 110080211 RAILROAD (FL)
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Source: [NPI Profile](https://npiprofile.com/npi/1346259116) · Data from the CMS NPPES public registry.