NADINE LIU D.O.
NPI 1033165634
Internal Medicine in Live Oak, TX

Q: What is Nadine Liu's NPI number?

The NPI number for Nadine Liu is 1033165634. It was assigned to this individual provider in the NPPES registry on May 25, 2006.

Q: What is Nadine Liu's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Nadine Liu was last updated on April 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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 May 25, 2006PECOS EnrolledAccepts Medicare Assignment

11901 TOEPPERWEIN RD, SUITE 1402, LIVE OAK, TX 78233(210) 599-3840(210) 599-1713 Get Directions Write a Review

NPPES record last updated: April 22, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Nadine Liu D.o. NPPES

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

NADINE LIU D.O. (NPI 1033165634) is an individual internal medicine provider in Live Oak, Texas, licensed in Texas (J8301) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of University Of North Texas Hsc, College Of Osteopathic Med (1991).

NPPES Registry Identity

NPI1033165634

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameNADINE LIUCredential: D.O.

Location Address11901 TOEPPERWEIN RD, SUITE 1402Live Oak, TX 78233-3161

Mailing Address11901 Toepperwein Rd, Suite 1402Live Oak, TX 78233-3161 · (210) 599-3840 · Fax (210) 599-1713

Phone(210) 599-3840

Fax(210) 599-1713

Sole ProprietorYes

Medical School CMSUniversity Of North Texas Hsc, College Of Osteopathic MedGraduated 1991

Enumeration DateMay 25, 2006

Last NPPES UpdateApril 22, 2025

NPPES CertifiedApril 22, 2025

✔ NPI 1033165634 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TX · J8301

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedPediatricsTaxonomy 208000000X · License J8301 (TX)

11901 TOEPPERWEIN RD, Live Oak, TX 78233

Open in Google Maps ↗

Accepted Insurance

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

Nadine Liu D.o. 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 ID9133175177

PECOS Enrollment IDI20050324001155

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 Nadine Liu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Toepperwein Med-Clinic Ltd

Same address

Internal Medicine

11901 TOEPPERWEIN RD, SUITE 1402
Live Oak, TX 78233

Reassigned Medicare billing, Texas enrollment

NPI 1972548642 (210) 599-3840

Doctor At Your Service PLLC

14 mi

Family Medicine

4242 MEDICAL DR, SUITE 6250
San Antonio, TX 78229

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

NPI 1003145483 (210) 479-3297

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 4

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 high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

588 services147 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

92 services92 patients

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.

25 services18 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78233 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

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

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.

YOLANDA GARCIA MA

Speech-Language Pathologist

11901 TOEPPERWEIN RD
LIVE OAK, TX 78233

Bexar County (210) 651-1900

CYNTHIA GORDON OTR/L

Occupational Therapist

11901 TOEPPERWEIN RD, SUITE 1106
LIVE OAK, TX 78233

Bexar County (210) 651-1900

PULMONOLOGY & SLEEP SERVICES OF SAN ANTONIO, LLC

Internal Medicine (Pulmonary Disease)

11901 TOEPPERWEIN RD, SUITE 1401
LIVE OAK, TX 78233

Bexar County (210) 599-1433

WHOLE HEALTH PSYCHOLOGY

Psychologist

11901 TOEPPERWEIN RD
LIVE OAK, TX 78233

Bexar County (210) 701-0525

PULMONOLOGY AND SLEEP SERVICES OF SAN ANTONIO LLC

Clinic/Center (Sleep Disorder Diagnostic)

11901 TOEPPERWEIN RD, STE 1401
LIVE OAK, TX 78233

Bexar County (210) 599-1433

DR. JEFFREY ALEXANDER CANNON M.D

Family Medicine

11901 TOEPPERWEIN RD, SUITE1201
LIVE OAK, TX 78233

Bexar County (210) 650-9066

MICHAEL JAMES ROSEDALE D.O.

Family Medicine

11901 TOEPPERWEIN RD, SUITE 1201
LIVE OAK, TX 78233

Bexar County (210) 650-9066

CARITAS FAMILY MEDICINE PA

Family Medicine

11901 TOEPPERWEIN RD, SUITE 1201
LIVE OAK, TX 78233

Bexar County (210) 650-9066

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 Nadine Liu's NPI number?

The NPI number for Nadine Liu is 1033165634. It was assigned to this individual provider in the NPPES registry on May 25, 2006.

Where is Nadine Liu located?

Nadine Liu practices at 11901 Toepperwein Rd Suite 1402, Live Oak, TX 78233. The listed phone number is (210) 599-3840.

What is Nadine Liu's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nadine Liu enrolled in Medicare?

Yes. Nadine Liu 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 Nadine Liu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nadine Liu reassigns Medicare benefits to 2 organizations: Toepperwein Med-Clinic Ltd (Live Oak, TX) and Doctor At Your Service PLLC (San Antonio, 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 Nadine Liu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nadine Liu accept?

Health plans from Blue Cross and Blue Shield of Texas and UnitedHealthcare list Nadine Liu 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 Nadine Liu was last updated on April 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.