MS. KIRSTEN ALEXANDRA NATHAN
NPI 1033646757
Internal Medicine in Fort Pierce, FL
About Ms. Kirsten Alexandra Nathan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. KIRSTEN ALEXANDRA NATHAN (NPI 1033646757) is an individual internal medicine provider in Fort Pierce, Florida, licensed in Florida (16750) and active in the NPI registry since May 2017. She is enrolled in Medicare PECOS, is affiliated with Redmond Regional Medical Center, and is a graduate of Other (2017).
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
Ms. Kirsten Alexandra Nathan 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
6Medicare enrollment records show Kirsten Nathan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hollywood, FL 33021
- Reassigned Medicare billing, Florida enrollment
- 413 clinicians in this Medicare group
Tampa, FL 33618
- Reassigned Medicare billing, Florida enrollment
- 903 clinicians in this Medicare group
Pensacola, FL 32514
- Reassigned Medicare billing, Florida enrollment
- 601 clinicians in this Medicare group
Monroe, GA 30655
- Reassigned Medicare billing, Alabama and Georgia enrollments
- 428 clinicians in this Medicare group
Baton Rouge, LA 70816
- Reassigned Medicare billing, Alabama enrollment
- 229 clinicians in this Medicare group
West Memphis, AR 72301
- Reassigned Medicare billing, Virginia enrollment
- 528 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 5
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.
Redmond Regional Medical Center
Acute Care Hospitals · Rome, GAPiedmont Eastside Medical Center
Acute Care Hospitals · Snellville, GAHenrico Doctors' Hospital
Acute Care Hospitals · Richmond, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 34950 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.
FORT PIERCE, FL 34950
FORT PIERCE, FL 34950
FORT PIERCE, FL 34950
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 Kirsten Nathan's NPI number?
The NPI number for Kirsten Nathan is 1033646757. It was assigned to this individual provider in the NPPES registry on May 12, 2017.
Where is Kirsten Nathan located?
Kirsten Nathan practices at 1700 S 23rd St, Fort Pierce, FL 34950. The listed phone number is (772) 461-4000.
What is Kirsten Nathan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Kirsten Nathan enrolled in Medicare?
Yes. Kirsten Nathan 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 Kirsten Nathan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kirsten Nathan reassigns Medicare benefits to 6 organizations: Eastside Hospitalists Inc (Hollywood, FL), Inpatient Consultants Of Florida Inc (Tampa, FL), Hospital Physician Services Of Florida PA (Pensacola, FL), Hospital Physician Services - Southeast Professional Corporation (Monroe, GA), Hospital Medicine Associates LLC (Baton Rouge, LA) and 1 more organization, listed in the Medicare section above. 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 Kirsten Nathan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kirsten Nathan accept?
Health plans from Molina Healthcare list Kirsten Nathan 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 Kirsten Nathan affiliated with any hospitals?
According to CMS data, Kirsten Nathan is affiliated with Redmond Regional Medical Center, Piedmont Eastside Medical Center and Henrico Doctors' Hospital.
When was this NPI record last updated?
The NPPES record for Kirsten Nathan was last updated on October 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Ms. Kirsten Alexandra Nathan · NPI 1033646757
Internal Medicine physician in Fort Pierce, Florida. Individual provider, active in the CMS NPPES registry since May 12, 2017.
## Identity
- **NPI:** 1033646757 (Entity type: Individual)
- **Enumerated:** May 12, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 16750 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 1700 S 23RD ST, Fort Pierce, FL 34950-4803
- **Phone:** (772) 461-4000
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Eastside Hospitalists Inc (NPI 1285676957, Hollywood, FL); Inpatient Consultants Of Florida Inc (NPI 1457511164, Tampa, FL); Hospital Physician Services Of Florida PA (NPI 1558718635, Pensacola, FL); Hospital Physician Services - Southeast Professional Corporation (NPI 1760410385, Monroe, GA); Hospital Medicine Associates LLC (NPI 1093758781, Baton Rouge, LA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** October 3, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1033646757) · Data from the CMS NPPES public registry.