Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ELIZABETH ANNE VANDERGAAG ARNP
NPI 1174697296
Nurse Practitioner - Family in Houston, TX

Q: What is Elizabeth Vandergaag's NPI number?

The NPI number for Elizabeth Vandergaag is 1174697296. It was assigned to this individual provider in the NPPES registry on November 20, 2006. The provider is also known as Elizabeth Mraz.

Q: What is Elizabeth Vandergaag's specialty?

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

Active since November 20, 2006PECOS EnrolledAccepts Medicare Assignment

1515 HOLCOMBE BLVD, HOUSTON, TX 77030(713) 792-6161 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 6, 2026, Aug 12, 2025 (2 updates tracked since 2025).

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About Elizabeth Anne Vandergaag Arnp NPPES

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

ELIZABETH ANNE VANDERGAAG ARNP (NPI 1174697296) is an individual family provider in Houston, Texas, licensed in Texas (AP127186) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS, is affiliated with St Luke's The Woodlands Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1174697296

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameELIZABETH ANNE VANDERGAAGCredential: ARNP

Location Address1515 HOLCOMBE BLVDHouston, TX 77030-4000

Mailing AddressPo Box 4439Houston, TX 77210-4439 · (713) 792-2991

Phone(713) 792-6161

Sole ProprietorNo

Medical School CMSOtherGraduated 2006

Enumeration DateNovember 20, 2006

Last NPPES UpdateAugust 6, 20262 updates tracked since enumeration

NPPES CertifiedAugust 6, 2026

✔ NPI 1174697296 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LF0000X

License✔ Licensed in TX · AP127186

Also ListedRegistered NurseTaxonomy 163W00000X · License RN00156835 (WA)

Also ListedNurse PractitionerTaxonomy 363L00000X · License AP30007439 (WA)

1515 HOLCOMBE BLVD, Houston, TX 77030

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Other Names 1

Former Name (1)Elizabeth Mraz

Secondary Practice Locations 2

Location 1625 9th Avenue, Ste 210Longview, WA 98632-2465 · Phone (360) 501-3400 · Fax (360) 423-6862

Location 217198 St Lukes Way Ste 600The Woodlands, TX 77384-8017 · Phone (936) 266-2450

Other Identifiers 2

Medicaid9651027WA

Other0229642WA · Labor And Industries

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Community Health Choice, Providence Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Elizabeth Anne Vandergaag Arnp 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 ID4688674583

PECOS Enrollment IDI20150126000155

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.

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.

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

24 services24 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.

12 services12 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

12 services12 patients

Hospital Affiliations CMS Care Compare

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

St Luke's The Woodlands Hospital

Acute Care Hospitals · The Woodlands, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450862

Location17200 St Luke's WayThe Woodlands, TX 77384 · Montgomery 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.

DR. MERRY CHEN MD

Psychiatry & Neurology (Neurology)

1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Harris County (713) 792-6161

AMEENA BAGREE MALHOTRA M.D.

Internal Medicine (Nephrology)

1515 HOLCOMBE BLVD, 77030-4009
HOUSTON, TX 77030

Harris County (713) 792-6161

SOLANGE ERLYN COX MD

Surgery

1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Harris County (713) 792-2360

DR. BRYAN KEITH GUILLORY M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Harris County (713) 792-6161

JANUARY Y TSAI MD

Anesthesiology

1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Harris County (713) 792-6161

DR. SUNYOUNG LEE MD

Internal Medicine (Medical Oncology)

1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Harris County (713) 792-6161

MRS. RACHEL KRAMER FUTRELL PA-C

Physician Assistant

1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Harris County (713) 792-6161

MEGAN J TANNER NP-C

Nurse Practitioner

1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Harris County (713) 792-6161

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 Elizabeth Vandergaag's NPI number?

The NPI number for Elizabeth Vandergaag is 1174697296. It was assigned to this individual provider in the NPPES registry on November 20, 2006. The provider is also known as Elizabeth Mraz.

Where is Elizabeth Vandergaag located?

Elizabeth Vandergaag practices at 1515 Holcombe Blvd, Houston, TX 77030. The listed phone number is (713) 792-6161.

What is Elizabeth Vandergaag's specialty?

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

Is Elizabeth Vandergaag enrolled in Medicare?

Yes. Elizabeth Vandergaag 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.

What insurance does Elizabeth Vandergaag accept?

Health plans from Blue Cross and Blue Shield of Texas, Community Health Choice, Providence Health Plan and WellPoint list Elizabeth Vandergaag 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.

Is Elizabeth Vandergaag affiliated with any hospitals?

According to CMS data, Elizabeth Vandergaag is affiliated with St Luke's The Woodlands Hospital.

When was this NPI record last updated?

The NPPES record for Elizabeth Vandergaag was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days 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.