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TERESA XIAO MD
NPI 1124775721
Internal Medicine in Nashville, TN

Active since March 04, 2022PECOS Enrolled
1161 21ST AVE S, NASHVILLE, TN 37232(615) 421-4626 Get Directions Write a Review

NPPES record last updated: June 8, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 14, 2023, Mar 4, 2022 (2 updates tracked since 2022).

About Teresa Xiao Md NPPES

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

TERESA XIAO MD (NPI 1124775721) is an individual internal medicine provider in Nashville, Tennessee, licensed in Illinois (125.081836) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1124775721
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameTERESA XIAOCredential: MD
Location Address1161 21ST AVE SNashville, TN 37232-0011
Mailing Address1161 21st Ave S, T-3113 McnNashville, TN 37232-0011 · (615) 421-4626
Phone(615) 421-4626
Sole ProprietorNo
Enumeration DateMarch 4, 2022
Last NPPES UpdateJune 8, 20262 updates tracked since enumeration
NPPES CertifiedJune 8, 2026
✔ NPI 1124775721 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 125.081836
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.
1161 21ST AVE S, Nashville, TN 37232
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Teresa Xiao Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37232 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
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
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.

HOLLY VICTORIA CANNON FNP-C
Nurse Practitioner (Family)
1161 21ST AVE S
NASHVILLE, TN 37232
Davidson County (615) 936-0060
DR. EVAN ZEHR MD
Student in an Organized Health Care Education/Training Program
1161 21ST AVE S
NASHVILLE, TN 37232
Davidson County (615) 322-6943
DR. MEREDITH ANTONETTE MONSOUR MD
Student in an Organized Health Care Education/Training Program
1161 21ST AVE S
NASHVILLE, TN 37232
Davidson County (615) 322-6638
DR. PRIYA CORYN VERBIK MD
Student in an Organized Health Care Education/Training Program
1161 21ST AVE S
NASHVILLE, TN 37232
Davidson County (615) 343-4882
DAVID M ARONOFF MD
Internal Medicine (Infectious Disease)
1161 21ST AVE S, A-2200 MEDICAL CENTER NORTH
NASHVILLE, TN 37232
Davidson County (615) 322-8972
DR. CARI L MOTUZAS M.D.
Radiology (Neuroradiology)
1161 21ST AVE S, CCC-1121 MED CTR N, DEPARTMENT OF RADIOLOGY
NASHVILLE, TN 37232
Davidson County (615) 322-3780
JENNIFER LYNN REEVES AG-ACNP
Psychiatry & Neurology (Neurocritical Care)
1161 21ST AVE S
NASHVILLE, TN 37232
Davidson County (615) 343-4665
HEBAH AL KHATEEB MD
Student in an Organized Health Care Education/Training Program
1161 21ST AVE S
NASHVILLE, TN 37232
Davidson County (615) 343-4882

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 Teresa Xiao's NPI number?

The NPI number for Teresa Xiao is 1124775721. It was assigned to this individual provider in the NPPES registry on March 4, 2022.

Where is Teresa Xiao located?

Teresa Xiao practices at 1161 21st Ave S, Nashville, TN 37232. The listed phone number is (615) 421-4626.

What is Teresa Xiao's specialty?

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

Is Teresa Xiao enrolled in Medicare?

Yes. Teresa Xiao is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Teresa Xiao was last updated on June 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 58 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.