DR. MARK S. HSIAO M.D.
NPI 1114008984
Orthopaedic Surgery - Orthopaedic Surgery of the Spine in Alhambra, CA

Q: What is Mark Hsiao's NPI number?

The NPI number for Mark Hsiao is 1114008984. It was assigned to this individual provider in the NPPES registry on October 18, 2006.

Q: What is Mark Hsiao's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Surgery of the Spine, with taxonomy code 207XS0117X.

Q: When was this NPI record last updated?

The NPPES record for Mark Hsiao was last updated on May 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since October 18, 2006PECOS EnrolledAccepts Medicare Assignment

707 S GARFIELD AVE FL 2, ALHAMBRA, CA 91801(626) 282-1600(626) 656-1264 Get Directions Write a Review

NPPES record last updated: May 7, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 7, 2024, Feb 10, 2022, May 19, 2021 and 3 more (6 updates tracked since 2017).

On this page

About Dr. Mark S. Hsiao M.d. NPPES

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

DR. MARK S. HSIAO M.D. (NPI 1114008984) is an individual orthopaedic surgery of the spine provider in Alhambra, California, licensed in Washington (MD61024463) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Seattle, and is a graduate of Creighton University School Of Medicine (2011).

NPPES Registry Identity

NPI1114008984

Entity TypeIndividualMale

Primary Taxonomy207XS0117X

Provider Legal NameDR. MARK S. HSIAOCredential: M.D.

Location Address707 S GARFIELD AVE FL 2Alhambra, CA 91801-5859

Mailing AddressPo Box 50095Seattle, WA 98145-5095

Phone(626) 282-1600

Fax(626) 656-1264

Sole ProprietorNo

Medical School CMSCreighton University School Of MedicineGraduated 2011

Enumeration DateOctober 18, 2006

Last NPPES UpdateMay 7, 20246 updates tracked since enumeration

NPPES CertifiedFebruary 10, 2022

✔ NPI 1114008984 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Orthopaedic Surgery of the SpineAllopathic & Osteopathic Physicians

Taxonomy Code207XS0117X

License✔ Licensed in WA · MD61024463

Definition

Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic surgeons of the spine deal with the evaluation and nonoperative and operative treatment of the full spectrum of primary spinal disorders including trauma, degenerative, deformity, tumor, and reconstructive.

707 S GARFIELD AVE FL 2, Alhambra, CA 91801

Open in Google Maps ↗

Secondary Practice Location 1

Location 1325 9th AveSeattle, WA 98104-2420 · Phone (206) 520-5000

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

Dr. Mark S. Hsiao 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 ID8426066184

PECOS Enrollment IDI20220930000958

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 Reassignment

Medicare enrollment records show Mark Hsiao reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group

3.9 mi

Health Maintenance Organization

3600 ROSEMEAD BLVD
Rosemead, CA 91770

Reassigned Medicare billing, California enrollment
13,921 clinicians in this Medicare group

NPI 1942787114 (877) 608-0044

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 6

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.

Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care G0283

Electrical stimulation is a therapy method where mild electrical pulses are used to treat pain or stimulate muscles in certain areas. It's not for wound care but is part of a broader therapy plan. It's safe, non-invasive, and can help improve overall health.

88 services30 patients

Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes 97110

This therapy involves exercises to boost strength, endurance, flexibility, and range of motion. Each session lasts 15 minutes. The goal is to improve physical function and overall health. It's a safe, beneficial method for enhancing well-being and fitness.

86 services29 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.

48 services48 patients

Therapy procedure using manual technique, each 15 minutes 97140

This therapy involves using hands-on techniques to help improve your body's movement and function. These techniques may include stretching, resistance exercises, or gentle pressure. Each session lasts 15 minutes and aims to relieve pain, promote healing, and improve your overall health.

44 services15 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

15 services15 patients

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.

11 services11 patients

Other Providers at the Same Location NPPES 9

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

JONATHAN KOE

Physician Assistant (Surgical)