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ALEXANDRA RENNINGER
NPI 1477405959
Psychiatry & Neurology - Psychiatry in Melbourne, FL

Active since February 09, 2026PECOS Enrolled
3643 BLUEFIELD AVE, MELBOURNE, FL 32934(321) 693-1309 Get Directions Write a Review

NPPES record last updated: February 9, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Alexandra Renninger NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEXANDRA RENNINGER (NPI 1477405959) is an individual psychiatry provider in Melbourne, Florida, licensed in Florida (ANRP11045399) and active in the NPI registry since February 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1477405959
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameALEXANDRA RENNINGER
Location Address3643 BLUEFIELD AVEMelbourne, FL 32934-8386
Mailing Address3643 Bluefield AveMelbourne, FL 32934-8386 · (321) 693-1309
Phone(321) 693-1309
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateFebruary 9, 2026
NPPES CertifiedFebruary 9, 2026
✔ NPI 1477405959 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in FL · ANRP11045399
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
3643 BLUEFIELD AVE, Melbourne, FL 32934
Open in Google Maps ↗

Other Names 1

Former Name (1)Alexandra Williams

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company), Oscar Health Maintenance Organization of Florida and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alexandra Renninger is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID345724639
PECOS Enrollment IDI20260325000325
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Alexandra Renninger reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Stedfast Medical Services LLC
99 mi
Psychiatry
3365 BURNS RD STE 203
Palm Beach Gardens, FL 33410
  • Reassigned Medicare billing, Florida enrollment
  • 48 clinicians in this Medicare group
NPI 1508438284 (561) 708-5092

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 32934 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$171.84 typical visit price
range $56.00 – $171.84
Typical copayment $42.96 (range $14.00 – $42.96)
Most-billed visit code 99205
Established Patient
$70.04 typical visit price
range $17.57 – $139.16
Typical copayment $17.51 (range $4.39 – $34.79)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Alexandra Renninger's NPI number?

The NPI number for Alexandra Renninger is 1477405959. It was assigned to this individual provider in the NPPES registry on February 9, 2026. The provider is also known as Alexandra Williams.

Where is Alexandra Renninger located?

Alexandra Renninger practices at 3643 Bluefield Ave, Melbourne, FL 32934. The listed phone number is (321) 693-1309.

What is Alexandra Renninger's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Alexandra Renninger enrolled in Medicare?

Yes. Alexandra Renninger is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Alexandra Renninger's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexandra Renninger reassigns Medicare benefits to Stedfast Medical Services LLC (Palm Beach Gardens, FL). 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 Alexandra Renninger's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexandra Renninger accept?

Health plans from Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company), Oscar Health Maintenance Organization of Florida and UnitedHealthcare list Alexandra Renninger 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.

When was this NPI record last updated?

The NPPES record for Alexandra Renninger was last updated on February 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.