KERI LYN MASON D.O.
NPI 1932293883
Internal Medicine in Fort Myers, FL
About Keri Lyn Mason D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KERI LYN MASON D.O. (NPI 1932293883) is an individual internal medicine provider in Fort Myers, Florida, licensed in Florida (OS10037) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS, is affiliated with Lee Memorial Hospital, and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
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
Keri Lyn Mason D.o. 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
3Medicare enrollment records show Keri Mason reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fort Myers, FL 33912
- Reassigned Medicare billing, Florida enrollment
- 139 clinicians in this Medicare group
Fort Myers, FL 33908
- Reassigned Medicare billing, Florida enrollment
- 1,899 clinicians in this Medicare group
Fort Myers, FL 33908
- Reassigned Medicare billing, Florida enrollment
- 1,345 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 6
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lee Memorial Hospital
Acute Care Hospitals · Fort Myers, FLCape Coral Hospital
Acute Care Hospitals · Cape Coral, FLPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 33912 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FORT MYERS, FL 33912
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 Keri Mason's NPI number?
The NPI number for Keri Mason is 1932293883. It was assigned to this individual provider in the NPPES registry on October 3, 2006. The provider is also known as Keri Lyn Mullen D.O..
Where is Keri Mason located?
Keri Mason practices at 13607 Pine Villa Ln, Fort Myers, FL 33912. The listed phone number is (239) 210-0132.
What is Keri Mason's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Keri Mason enrolled in Medicare?
Yes. Keri Mason 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 Keri Mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Keri Mason reassigns Medicare benefits to 3 organizations: Cape Coral Hospitalists Inc (Fort Myers, FL), Lee Health System Inc (Fort Myers, FL) and Lee Memorial Health System (Fort Myers, FL). 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 Keri Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Keri Mason accept?
Health plans from Ambetter Health, Ambetter from Superior HealthPlan and Ambetter of Alabama list Keri Mason 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 Keri Mason affiliated with any hospitals?
According to CMS data, Keri Mason is affiliated with Lee Memorial Hospital and Cape Coral Hospital.
When was this NPI record last updated?
The NPPES record for Keri Mason was last updated on June 17, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.