MARY GUNNELS MSN, APRN, AGACNP-BC
NPI 1659225985
Nurse Practitioner - Acute Care in Houston, TX

Q: What is Mary Gunnels's NPI number?

The NPI number for Mary Gunnels is 1659225985. It was assigned to this individual provider in the NPPES registry on February 24, 2026.

Q: What is Mary Gunnels's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.

Q: When was this NPI record last updated?

The NPPES record for Mary Gunnels was last updated on April 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 February 24, 2026PECOS EnrolledAccepts Medicare Assignment

6550 FANNIN ST STE 1901, HOUSTON, TX 77030(713) 441-1100(713) 790-2643 Get Directions Write a Review

NPPES record last updated: April 16, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Mary Gunnels Msn, Aprn, Agacnp-bc NPPES

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

MARY GUNNELS MSN, APRN, AGACNP-BC (NPI 1659225985) is an individual acute care provider in Houston, Texas, licensed in Texas (1005457) and active in the NPI registry since February 2026. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and is a graduate of Other (2025).

NPPES Registry Identity

NPI1659225985

Entity TypeIndividualFemale

Primary Taxonomy363LA2100X

Provider Legal NameMARY GUNNELSCredential: MSN, APRN, AGACNP-BC

Location Address6550 FANNIN ST STE 1901Houston, TX 77030-2719

Mailing Address6550 Fannin St Ste 1901Houston, TX 77030-2719 · (713) 441-1100 · Fax (713) 790-2643

Phone(713) 441-1100

Fax(713) 790-2643

Sole ProprietorNo

Medical School CMSOtherGraduated 2025

Enumeration DateFebruary 24, 2026

Last NPPES UpdateApril 16, 2026

NPPES CertifiedApril 16, 2026

✔ NPI 1659225985 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LA2100X

License✔ Licensed in TX · 1005457

6550 FANNIN ST STE 1901, Houston, TX 77030

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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

Mary Gunnels Msn, Aprn, Agacnp-bc 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 ID8921565367

PECOS Enrollment IDI20260806000051

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 Mary Gunnels reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Houston Methodist Specialty Physicians

1.0 mi

Otolaryngology

7550 GREENBRIAR DR STE 600
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
1,579 clinicians in this Medicare group

NPI 1902614332 (281) 414-6055

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Houston Methodist Hospital

Acute Care Hospitals · Houston, TX

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450358

Location6565 FanninHouston, TX 77030 · Harris County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77030 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

$90.40 typical visit price

range $58.24 – $176.98

Typical copayment $22.60 (range $14.56 – $44.24)

Most-billed visit code 99203

Established Patient

$102.71 typical visit price

range $18.60 – $143.93

Typical copayment $25.67 (range $4.65 – $35.98)

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.

JOE AOUN

Internal Medicine (Interventional Cardiology)