LEA MARGARET THIES FNP
NPI 1710266804
Nurse Practitioner in Marathon, FL
About Lea Margaret Thies Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEA MARGARET THIES FNP (NPI 1710266804) is an individual nurse practitioner in Marathon, Florida, licensed in Florida (APRN11036184) and active in the NPI registry since August 2011. She is enrolled in Medicare PECOS, is affiliated with Lower Keys Medical Center, and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
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
Lea Margaret Thies Fnp 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
2Medicare enrollment records show Lea Thies reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tavernier, FL 33070
- Reassigned Medicare billing, Florida enrollment
- 24 clinicians in this Medicare group
Waldorf, MD 20603
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 2,618 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lower Keys Medical Center
Acute Care Hospitals · Key West, FLFishermen's Community Hospital
Critical Access Hospitals · Marathon, FLMariners Hospital
Critical Access Hospitals · Tavernier, FLPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 33050 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 18
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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARATHON, FL 33050
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 Lea Thies's NPI number?
The NPI number for Lea Thies is 1710266804. It was assigned to this individual provider in the NPPES registry on August 8, 2011.
Where is Lea Thies located?
Lea Thies practices at 3303 Overseas Hwy Ste 100, Marathon, FL 33050. The listed phone number is (305) 434-1400.
What is Lea Thies's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Lea Thies enrolled in Medicare?
Yes. Lea Thies 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 Lea Thies's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lea Thies reassigns Medicare benefits to 2 organizations: Baptist Health Medical Group Upper Keys, LLC (Tavernier, FL) and Inova Health Care Services (Waldorf, MD). 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 Lea Thies's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lea Thies accept?
Health plans from Oscar Health Maintenance Organization of Florida list Lea Thies 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 Lea Thies affiliated with any hospitals?
According to CMS data, Lea Thies is affiliated with Lower Keys Medical Center, Fishermen's Community Hospital and Mariners Hospital.
When was this NPI record last updated?
The NPPES record for Lea Thies was last updated on January 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.
# Lea Margaret Thies, FNP · NPI 1710266804
Nurse Practitioner physician in Marathon, Florida. Individual provider, active in the CMS NPPES registry since August 8, 2011.
## Identity
- **NPI:** 1710266804 (Entity type: Individual)
- **Enumerated:** August 8, 2011
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** APRN11036184 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 3303 OVERSEAS HWY STE 100, Marathon, FL 33050-2329
- **Phone:** (305) 434-1400 · **Fax:** (305) 743-0962
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Baptist Health Medical Group Upper Keys, LLC (NPI 1558553479, Tavernier, FL); Inova Health Care Services (NPI 1851829550, Waldorf, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** January 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1710266804) · Data from the CMS NPPES public registry.