MARLEN MUNOZ MSN, APRN, FNP-C
NPI 1639929243
Nurse Practitioner - Family in Harlingen, TX

Q: What is Marlen Munoz's NPI number?

The NPI number for Marlen Munoz is 1639929243. It was assigned to this individual provider in the NPPES registry on March 26, 2024.

Q: What is Marlen Munoz's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Marlen Munoz was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since March 26, 2024PECOS Enrolled

5501 US - 77, HARLINGEN, TX 78550(956) 365-1000 Get Directions Write a Review

NPPES record last updated: December 2, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Marlen Munoz Msn, Aprn, Fnp-c NPPES

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

MARLEN MUNOZ MSN, APRN, FNP-C (NPI 1639929243) is an individual family provider in Harlingen, Texas, licensed in Texas (1139911) and active in the NPI registry since March 2024. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1639929243

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameMARLEN MUNOZCredential: MSN, APRN, FNP-C

Location Address5501 US - 77Harlingen, TX 78550

Mailing Address4008 S Rodman LnEdinburg, TX 78542-6166 · (956) 998-0140

Phone(956) 365-1000

Sole ProprietorNo

Enumeration DateMarch 26, 2024

Last NPPES UpdateDecember 2, 2025

NPPES CertifiedDecember 2, 2025

✔ NPI 1639929243 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 TX · 1139911

5501 US - 77, Harlingen, TX 78550

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marlen Munoz Msn, Aprn, Fnp-c 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

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

Emergency Physicians Of South Texas PLLC

15 mi

Emergency Medicine

5501 S EXPRESSWAY 77
Harlingen, TX 78550

Reassigned Medicare billing, Texas enrollment
47 clinicians in this Medicare group

NPI 1477310779 (956) 365-1000

Knapp Medical Group

31 mi

Family Medicine

1401 E 8TH ST
Weslaco, TX 78596

Reassigned Medicare billing, Texas enrollment
31 clinicians in this Medicare group

NPI 1689905309 (956) 969-5237

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.

46 services45 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

26 services25 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.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78550 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

$84.92 typical visit price

range $54.84 – $166.88

Typical copayment $21.23 (range $13.71 – $41.72)

Most-billed visit code 99203

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

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 Marlen Munoz's NPI number?

The NPI number for Marlen Munoz is 1639929243. It was assigned to this individual provider in the NPPES registry on March 26, 2024.

Where is Marlen Munoz located?

Marlen Munoz practices at 5501 Us - 77, Harlingen, TX 78550. The listed phone number is (956) 365-1000.

What is Marlen Munoz's specialty?

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

Is Marlen Munoz enrolled in Medicare?

Yes. Marlen Munoz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Marlen Munoz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marlen Munoz reassigns Medicare benefits to 2 organizations: Emergency Physicians Of South Texas PLLC (Harlingen, TX) and Knapp Medical Group (Weslaco, TX). 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 Marlen Munoz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marlen Munoz accept?

Health plans from Blue Cross and Blue Shield of Texas list Marlen Munoz 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 Marlen Munoz was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.