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MRS. SIERRA JO MUILENBURG-ALVAREZ APRN
NPI 1154035996
Nurse Practitioner in Brooksville, FL

Active since January 06, 2023PECOS EnrolledAccepts Medicare Assignment
11375 CORTEZ BLVD, BROOKSVILLE, FL 34613(352) 596-6632 Get Directions Write a Review

NPPES record last updated: January 20, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 20, 2023, Jan 6, 2023 (2 updates tracked since 2023).

About Mrs. Sierra Jo Muilenburg-alvarez Aprn NPPES

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

MRS. SIERRA JO MUILENBURG-ALVAREZ APRN (NPI 1154035996) is an individual nurse practitioner in Brooksville, Florida, licensed in Florida (APRN11023993) and active in the NPI registry since January 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1154035996
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMRS. SIERRA JO MUILENBURG-ALVAREZCredential: APRN
Location Address11375 CORTEZ BLVDBrooksville, FL 34613-5409
Mailing Address15627 Indian Queen DrOdessa, FL 33556-3012 · (813) 455-8911
Phone(352) 596-6632
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateJanuary 6, 2023
Last NPPES UpdateJanuary 20, 20232 updates tracked since enumeration
NPPES CertifiedJanuary 20, 2023
✔ NPI 1154035996 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in FL · APRN11023993
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedRegistered Nurse · EmergencyTaxonomy 163WE0003X · License RN9468638 (FL)
11375 CORTEZ BLVD, Brooksville, FL 34613
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health Maintenance Organization of Florida.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

Mrs. Sierra Jo Muilenburg-alvarez Aprn 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.

PECOS PAC ID5890169437
PECOS Enrollment IDI20230407001484
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 Reassignments

4

Medicare enrollment records show Sierra Muilenburg-alvarez reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Your Family Walk-In Clinic LLC
24 mi
Health Service
17929 HUNTING BOW CIR
Lutz, FL 33558
  • Reassigned Medicare billing, Florida enrollment
  • 18 clinicians in this Medicare group
NPI 1609297928 (813) 792-8555
Paragon Emergency Services LLC
60 mi
Emergency Medicine
200 AVENUE F NE
Winter Haven, FL 33881
  • Reassigned Medicare billing, Florida enrollment
  • 1,065 clinicians in this Medicare group
NPI 1912101650 (863) 293-1121
Emergency Medicine Services Of Fl, LLC
230 mi
Emergency Medicine
20900 BISCAYNE BLVD
Aventura, FL 33180
  • Reassigned Medicare billing, Florida enrollment
  • 1,912 clinicians in this Medicare group
NPI 1043917180 (305) 682-7000
Paragon Contracting Services LLC
425 mi
Emergency Medicine
810 SAINT VINCENTS DR
Birmingham, AL 35205
  • Reassigned Medicare billing, Florida enrollment
  • 802 clinicians in this Medicare group
NPI 1225071459 (205) 939-7100

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
110 services109 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
38 services38 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 34613 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
$87.62 typical visit price
range $56.00 – $171.84
Typical copayment $21.90 (range $14.00 – $42.96)
Most-billed visit code 99203
Established Patient
$99.16 typical visit price
range $17.57 – $139.16
Typical copayment $24.79 (range $4.39 – $34.79)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

SEAN MICHAEL
Internal Medicine
11375 CORTEZ BLVD
BROOKSVILLE, FL 34613
Hernando County (352) 592-2755
MELISSA MIDDLEBROOKS MD
Student in an Organized Health Care Education/Training Program
11375 CORTEZ BLVD
BROOKSVILLE, FL 34613
Hernando County (352) 597-3072
KRISTEN COSTA
Nurse Practitioner (Family)
11375 CORTEZ BLVD
BROOKSVILLE, FL 34613
Hernando County (352) 596-6632
DR. CASPER HEPLER DO
Anesthesiology
11375 CORTEZ BLVD
BROOKSVILLE, FL 34613
Hernando County (352) 597-3072
NEAMI TERVIL DO
Student in an Organized Health Care Education/Training Program
11375 CORTEZ BLVD
BROOKSVILLE, FL 34613
Hernando County (352) 592-2756
HCA HEALTH SERVICES OF FLORIDA, INC.
General Acute Care Hospital
11375 CORTEZ BLVD
BROOKSVILLE, FL 34613
Hernando County (352) 596-6632
PUSHPA ALLAM-NANDYALA MD
Pathology (Anatomic Pathology & Clinical Pathology)
11375 CORTEZ BLVD, OAK HILL HOSPITAL
BROOKSVILLE, FL 34613
Hernando County (352) 596-6632
DR. ANUJ ANIL BHATIA MD
Internal Medicine
11375 CORTEZ BLVD
BROOKSVILLE, FL 34613
Hernando County (352) 596-6632

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 Sierra Muilenburg-alvarez's NPI number?

The NPI number for Sierra Muilenburg-alvarez is 1154035996. It was assigned to this individual provider in the NPPES registry on January 6, 2023.

Where is Sierra Muilenburg-alvarez located?

Sierra Muilenburg-alvarez practices at 11375 Cortez Blvd, Brooksville, FL 34613. The listed phone number is (352) 596-6632.

What is Sierra Muilenburg-alvarez's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Sierra Muilenburg-alvarez enrolled in Medicare?

Yes. Sierra Muilenburg-alvarez 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 Sierra Muilenburg-alvarez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sierra Muilenburg-alvarez reassigns Medicare benefits to 4 organizations: Your Family Walk-In Clinic LLC (Lutz, FL), Paragon Emergency Services LLC (Winter Haven, FL), Emergency Medicine Services Of Fl, LLC (Aventura, FL) and Paragon Contracting Services LLC (Birmingham, AL). 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 Sierra Muilenburg-alvarez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sierra Muilenburg-alvarez accept?

Health plans from Oscar Health Maintenance Organization of Florida list Sierra Muilenburg-alvarez 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 Sierra Muilenburg-alvarez was last updated on January 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.