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STEPHEN K. LIAO M.D. PC
NPI 1992751010
Internal Medicine in Tucson, AZ

Active since May 26, 2006
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: November 01, 2026.

About Stephen K. Liao M.d. Pc NPPES

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

STEPHEN K. LIAO M.D. PC (NPI 1992751010) is a healthcare organization registered as an internal medicine in Tucson, Arizona and active in the NPI registry since May 2006. The organization lists Stephen K Liao, President, as its authorized official.

NPPES Registry Identity

NPI1992751010
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSTEPHEN K. LIAO M.D. PC
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
Organization SubpartNo
Authorized OfficialStephen K LiaoPresident · (520) 544-5178
Enumeration DateMay 26, 2006
Last NPPES UpdateDecember 3, 2007
✔ NPI 1992751010 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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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stephen K. Liao M.d. Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Stephen K. Liao M.D. PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Stephen Liao, M.D.
Internal Medicine
NPI 1548209075
2181 W ORANGE GROVE RD #185
Tucson, AZ 85741
(520) 575-5766
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 K. Liao M.D. PC's NPI number?

The NPI number for Stephen K. Liao M.D. PC is 1992751010. It was assigned to this organization in the NPPES registry on May 26, 2006.

Where is Stephen K. Liao M.D. PC located?

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

What is Stephen K. Liao M.D. PC's specialty?

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

Is Stephen K. Liao M.D. PC enrolled in Medicare?

Yes. Stephen K. Liao M.D. PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Stephen K. Liao M.D. PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Stephen K. Liao M.D. PC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Stephen K. Liao M.D. PC 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.