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MRS. PATRICIA ANN GRENZENBACH ARNP
NPI 1598797920
Nurse Practitioner - Family in Vero Beach, FL

Active since July 07, 2006PECOS Enrolled
7295 6TH ST, VERO BEACH, FL 32968(772) 778-5612(772) 778-5612 Get Directions Write a Review

NPPES record last updated: February 28, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mrs. Patricia Ann Grenzenbach Arnp NPPES

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

MRS. PATRICIA ANN GRENZENBACH ARNP (NPI 1598797920) is an individual family provider in Vero Beach, Florida, licensed in Florida (3396072) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1598797920
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. PATRICIA ANN GRENZENBACHCredential: ARNP
Location Address7295 6TH STVero Beach, FL 32968-9692
Mailing Address7295 6th StVero Beach, FL 32968-9692 · (772) 778-5612 · Fax (772) 778-5612
Phone(772) 778-5612
Fax(772) 778-5612
Sole ProprietorNo
Enumeration DateJuly 7, 2006
Last NPPES UpdateFebruary 28, 2014
✔ NPI 1598797920 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in FL · 3396072
7295 6TH ST, Vero Beach, FL 32968
Open in Google Maps ↗

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 (PECOS)

Mrs. Patricia Ann Grenzenbach Arnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

2

Medicare enrollment records show Patricia Grenzenbach reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Fl-I Medical Services, LLC
6.1 mi
Emergency Medicine
660 S US HIGHWAY 1
Vero Beach, FL 32962
  • Reassigned Medicare billing, Florida enrollment
  • 210 clinicians in this Medicare group
NPI 1194396457 (973) 251-1132
Emergency Medicine Services Of Fl, LLC
115 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

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 2

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 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.
88 services87 patients
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.
26 services26 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 32968 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
$91.69 typical visit price
range $58.56 – $179.05
Typical copayment $22.92 (range $14.64 – $44.76)
Most-billed visit code 99203
Established Patient
$103.21 typical visit price
range $18.44 – $144.68
Typical copayment $25.80 (range $4.61 – $36.17)
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.

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 Patricia Grenzenbach's NPI number?

The NPI number for Patricia Grenzenbach is 1598797920. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Where is Patricia Grenzenbach located?

Patricia Grenzenbach practices at 7295 6th St, Vero Beach, FL 32968. The listed phone number is (772) 778-5612.

What is Patricia Grenzenbach's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Patricia Grenzenbach enrolled in Medicare?

Yes. Patricia Grenzenbach is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Patricia Grenzenbach's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Patricia Grenzenbach reassigns Medicare benefits to 2 organizations: Fl-I Medical Services, LLC (Vero Beach, FL) and Emergency Medicine Services Of Fl, LLC (Aventura, 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 Patricia Grenzenbach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Patricia Grenzenbach accept?

Health plans from Oscar Health Maintenance Organization of Florida list Patricia Grenzenbach 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 Patricia Grenzenbach was last updated on February 28, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.