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STEPHEN K. LIAO M.D.
NPI 1548209075
Internal Medicine in Tucson, AZ

Active since June 06, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 03D0937409 · Waiver
2181 W ORANGE GROVE RD, #185, TUCSON, AZ 85741(520) 575-5766(520) 575-5593 Get Directions Write a Review

NPPES record last updated: December 3, 2007. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Stephen K. Liao M.d. NPPES

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

STEPHEN K. LIAO M.D. (NPI 1548209075) is an individual internal medicine provider in Tucson, Arizona, licensed in Arizona (24064) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through October 30, 2027, and is a graduate of University Of California, San Francisco School Of Medicine (1984).

NPPES Registry Identity

NPI1548209075
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSTEPHEN K. LIAOCredential: M.D.
Location Address2181 W ORANGE GROVE RD, #185Tucson, AZ 85741-3118
Mailing Address6241 N Placita De LuisTucson, AZ 85718-2736 · (520) 544-5178
Phone(520) 575-5766
Fax(520) 575-5593
Sole ProprietorNo
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 1984
Enumeration DateJune 6, 2006
Last NPPES UpdateDecember 3, 2007
✔ NPI 1548209075 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in AZ · 24064
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.
2181 W ORANGE GROVE RD, Tucson, AZ 85741
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Other Identifiers 1

Medicare UPINA53250

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

Stephen K. Liao M.d. 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 ID7810917572
PECOS Enrollment IDI20051128000400
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 03D0937409

Stephen K Liao MD PC · Tucson, AZ
Active · expires Oct 30, 2027
CLIA Number03D0937409
Laboratory TypePhysician Office
Certificate Effective DateOctober 31, 2025
Certificate Expiration DateOctober 30, 2027
Laboratory DirectorStephen K. Liao MD
Laboratory Phone(520) 575-5766
Laboratory LocationStephen K Liao MD PC2181 W Orange Grove Rd, #185, Tucson, AZ 85741
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 8

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 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.
383 services190 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.
177 services125 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.
157 services157 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
70 services58 patients
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.
54 services39 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
53 services46 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85741 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
$127.71 typical visit price
range $55.44 – $168.60
Typical copayment $31.92 (range $13.86 – $42.15)
Most-billed visit code 99204
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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.

Referred Medical Equipment & Supplies CMS DME claims 6

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
7 suppliers13 claims13 services$15.98 avg. paid by Medicare
Tubing used with positive airway pressure device A7037
DME-Other DME · category DE001N
5 suppliers12 claims12 services$10.35 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
7 suppliers17 claims91 services$1.71 avg. paid by Medicare
Continuous positive airway pressure (cpap) device E0601
DME-Other DME · category DE001N
4 suppliers37 claims37 services$22.28 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
4 suppliers54 claims54 services$58.58 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
2 suppliers33 claims33 services$27.31 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

STEPHEN K. LIAO M.D. PC
Internal Medicine
2181 W ORANGE GROVE RD, #185
TUCSON, AZ 85741
Pima County (520) 575-5766

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 Stephen Liao's NPI number?

The NPI number for Stephen Liao is 1548209075. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is Stephen Liao located?

Stephen Liao practices at 2181 W Orange Grove Rd #185, Tucson, AZ 85741. The listed phone number is (520) 575-5766.

What is Stephen Liao's specialty?

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

Is Stephen Liao enrolled in Medicare?

Yes. Stephen Liao 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.

Does Stephen Liao hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 03D0937409) is associated with this NPI, valid through October 30, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Stephen Liao was last updated on December 3, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.