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MRS. MARIA ISABEL STEWART AGACNP-BC
NPI 1306422845
Nurse Practitioner - Acute Care in Tyler, TX

Active since March 23, 2021PECOS EnrolledAccepts Medicare Assignment
800 E DAWSON ST, TYLER, TX 75701(903) 593-8441 Get Directions Write a Review

NPPES record last updated: May 26, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 26, 2026, May 17, 2024, Apr 7, 2021 and 1 more (4 updates tracked since 2021).

About Mrs. Maria Isabel Stewart Agacnp-bc NPPES

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

MRS. MARIA ISABEL STEWART AGACNP-BC (NPI 1306422845) is an individual acute care provider in Tyler, Texas, licensed in Texas (1030298) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2021).

NPPES Registry Identity

NPI1306422845
Entity TypeIndividualFemale
Primary Taxonomy363LA2100X
Provider Legal NameMRS. MARIA ISABEL STEWARTCredential: AGACNP-BC
Location Address800 E DAWSON STTyler, TX 75701-2036
Mailing Address214 Rosebrook CirWhitehouse, TX 75791-3583 · (903) 570-5932
Phone(903) 593-8441
Sole ProprietorYes
Medical School CMSOtherGraduated 2021
Enumeration DateMarch 23, 2021
Last NPPES UpdateMay 26, 20264 updates tracked since enumeration
NPPES CertifiedMay 26, 2026
✔ NPI 1306422845 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2100X
License✔ Licensed in TX · 1030298
Also ListedNurse PractitionerTaxonomy 363L00000X · License APRN1103 (FL), 802173 (TX)
800 E DAWSON ST, Tyler, TX 75701
Open in Google Maps ↗

Other Identifiers 1

Other1N7050TX · Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, UnitedHealthcare.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. Maria Isabel Stewart 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 ID6103233549
PECOS Enrollment IDI20210331000540
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

6

Medicare enrollment records show Maria Stewart reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Christus Trinity Clinic Texas
0.2 mi
Family Medicine
520 DOUGLAS BLVD
Tyler, TX 75702
  • Reassigned Medicare billing, Texas enrollment
  • 2,745 clinicians in this Medicare group
NPI 1285684225 (903) 315-4119
Iora Health Texas, PLLC
168 mi
Internal Medicine
12266 FARM TO MARKET 1960 RD WEST
Houston, TX 77065
  • Reassigned Medicare billing, Texas enrollment
  • 40 clinicians in this Medicare group
NPI 1538728720 (888) 663-6331
Houston Cardiovascular Assoc PA
180 mi
Cardiovascular Disease
5115 FANNIN ST STE 801
Houston, TX 77004
  • Reassigned Medicare billing, Texas enrollment
  • 96 clinicians in this Medicare group
NPI 1487746020 (713) 790-0841
Orlando Family Physicians, LLC
865 mi
General Practice
6336 W COLONIAL DR
Orlando, FL 32818
  • Reassigned Medicare billing, Florida enrollment
  • 97 clinicians in this Medicare group
NPI 1568563187 (407) 658-9687
Heartbeat Medical Group PC
1,315 mi
Cardiovascular Disease
156 W 56TH ST STE 1000D
New York, NY 10019
  • Reassigned Medicare billing, Iowa enrollment
  • 12 clinicians in this Medicare group
NPI 1346914280 (646) 586-9908
Jeffrey D. Wessler, M.D., P.C.
1,315 mi
Clinic/Center
156 W 56TH ST STE 1000
New York, NY 10019
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Jeffrey D Wessler MD PC
  • 18 clinicians in this Medicare group
NPI 1902318603 (347) 474-9070

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 5

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
126 services120 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
35 services35 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
31 services29 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
30 services30 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.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75701 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.

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.

KIRBY KILE CRNA
Anesthesiology
800 E DAWSON ST
TYLER, TX 75701
Smith County (903) 593-8441
MR. BLAKE ALLEN LONG RN
Nurse Practitioner
800 E DAWSON ST
TYLER, TX 75701
Smith County (903) 593-8441
DAVID A BRICKEY DO
Internal Medicine
800 E DAWSON ST
TYLER, TX 75701
Smith County (903) 525-1914
DR. ESMAEL FANTAW YIMER MD
Internal Medicine
800 E DAWSON ST
TYLER, TX 75701
Smith County (903) 606-7264
SALEEM ZAIDI M.D.
Anesthesiology (Critical Care Medicine)
800 E DAWSON ST
TYLER, TX 75701
Smith County (903) 606-5864
DR. JAMES MICHAEL WILSON MD, MPH
Emergency Medicine
800 E DAWSON ST
TYLER, TX 75701
Smith County (903) 525-1914
DR. SAILAJA SAKAM M.D.
Internal Medicine
800 E DAWSON ST
TYLER, TX 75701
Smith County (903) 606-4129
JAMES BLAKE KNUTSON MD
Internal Medicine
800 E DAWSON ST
TYLER, TX 75701
Smith County (903) 510-1186

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 Maria Stewart's NPI number?

The NPI number for Maria Stewart is 1306422845. It was assigned to this individual provider in the NPPES registry on March 23, 2021.

Where is Maria Stewart located?

Maria Stewart practices at 800 E Dawson St, Tyler, TX 75701. The listed phone number is (903) 593-8441.

What is Maria Stewart's specialty?

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

Is Maria Stewart enrolled in Medicare?

Yes. Maria Stewart 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 Maria Stewart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maria Stewart reassigns Medicare benefits to 6 organizations: Christus Trinity Clinic Texas (Tyler, TX), Iora Health Texas, PLLC (Houston, TX), Houston Cardiovascular Assoc PA (Houston, TX), Orlando Family Physicians, LLC (Orlando, FL), Heartbeat Medical Group PC (New York, NY) and 1 more organization, listed in the Medicare section above. 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 Maria Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Maria Stewart accept?

Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan and UnitedHealthcare list Maria Stewart 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 Maria Stewart was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.