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Orthopedic Surgery

Tiffany C. Liu, MD

Works at hospitals in Astoria, OR · Longview, WA · Oregon, Washington

Summary

Dr. Tiffany C. Liu, MD is an orthopedic surgeon at 625 9th Ave, Suite 210, Longview, WA 98632. Phone: (360) 501-3400. Accepts Medicare assignment. In 2024, Tiffany C. Liu had 56 Original Medicare patients and 202 services. NPI 1528562964. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Orthopedic surgeon (Medicare lists Orthopedic Surgery)
  • Address: 625 9th Ave, Suite 210, Longview, WA 98632 · Directions
  • Phone: (360) 501‑3400
  • Medicare: Accepts Medicare assignment
  • Hospitals: Columbia Memorial Hospital, PeaceHealth St John Medical Center
  • Group practice: Longview Orthopedic Associates PLLC
  • Medical school: Perelman School Of Med At The University Of Pennsylvania · graduated 2018 (8 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Tiffany C. Liu, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Tiffany C. Liu accept Medicare assignment?
Yes. Medicare's clinician data says Tiffany C. Liu accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Tiffany C. Liu see?
In 2024, CMS data shows 56 Original Medicare patients and 202 services for Tiffany C. Liu. This counts Original Medicare only and measures volume, not quality.
What is Tiffany C. Liu's NPI number?
1528562964. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Tiffany C. Liu, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients56
Services billed to Medicare202
Different services or procedures33
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (J0702)32 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)27 services
  3. Injection into tendon or ligament (20550)17 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol68%
  • Arthritis61%
  • Diabetes36%
  • Anxiety27%
  • Depression23%

Hospitals where Tiffany C. Liu works

Medicare's Facility Affiliation Data lists Tiffany C. Liu at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Tiffany C. Liu is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Tiffany C. Liu as a member of this group (CMS data updated October 2, 2026).

  • Longview Orthopedic Associates PLLC10 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in Washington →

Other orthopedic surgeons in Longview

Clinicians with the same Medicare primary specialty in Longview, WA — not a recommendation.

All orthopedic surgeons in Longview →

Other clinicians in Longview Orthopedic Associates PLLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolPerelman School Of Med At The University Of Pennsylvania
Graduation year2018 (8 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528562964
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians