Dr. Chang C Liu , DO
Internal Medicine โข Seattle, WA
904 7th Ave Fl 9
Seattle, WA 981041132
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 10, 2017; this date does not establish years in practice.
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Published CMS data list 94 Original Medicare Part B services in 2023.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023. Published rows only; this is not a quality measure.
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Published Part B service records, 2023:
- 99213 โ Established patient outpatient office visit: 75 service units.
- 36415 โ Insertion of needle into vein for collection of blood sample: 19 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2022 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2023). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 116 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Lisinopril โ 26 prescription fills, including refills.
- Gabapentin โ 19 prescription fills, including refills.
- Levothyroxine Sodium โ 19 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2023. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 7 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 18 in 2022 to 94 in 2023.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022โ2023.
Practice Location & Contact Primary Location
904 7th Ave Fl 9
Seattle, WA 981041132
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Franciscan Medical Group; Virginia Mason Medical Center. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2019
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
85 people with Original Medicare in 2023
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2023.
Medicare-allowed amount
About $7,487 in 2023
The total amount Medicare approved for these services in 2023. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023.
Paid by Medicare
About $4,783 in 2023
The part of the Medicare-allowed amount that Medicare itself paid in 2023, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023.
30-day fills
227 standardized 30-day fills in 2023
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$2,247 in 2023
The total cost of these prescriptions in 2023, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2023.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
7 years (graduated 2019)
CMS Doctors and Clinicians data list 2019 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2017
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Liu has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Liu as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Seattle and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Liu are from 2023.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Liu are from 2023.
824 active clinicians are listed under Internal Medicine with a practice address in Seattle, WA (3,125 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Seattle
25.7% of these 824 clinicians have the CMS telehealth indicator.
50.2% of these 824 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services went from 18 in 2022 to 94 in 2023.
- 2022: 18
- 2023: 94
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Medicare-allowed amount
Medicare-allowed amount increased 317% from $1,797 in 2022 to $7,487 in 2023.
- 2022: $1,797
- 2023: $7,487
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Paid by Medicare
Paid by Medicare increased 254% from $1,351 in 2022 to $4,783 in 2023.
- 2022: $1,351
- 2023: $4,783
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Medicare Part D prescriptions
CMS data for Part D prescriptions are available for 2023 only.
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30-day fills
CMS data for 30-day fills are available for 2023 only.
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Part D drug cost
CMS data for Part D drug cost are available for 2023 only.
Sources: CMS Medicare Physician & Other Practitioners (2023), CMS Medicare Part D Prescribers (2023), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021โ2022 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2022โ2023; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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75 | 70 | $212.00 | $97.79 |
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36415
Insertion of needle into vein for collection of blood sample
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19 | 18 | $15.00 | $8.04 |
Source: CMS Part B by Provider and Service, 2023; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Lisinopril | Lisinopril | 26 | 1,770 | $341.34 | โ |
| Gabapentin | Gabapentin | 19 | 570 | $176.76 | โ |
| Levothyroxine Sodium | Levothyroxine Sodium | 19 | 1,420 | $487.53 | โ |
| Atorvastatin Calcium | Atorvastatin Calcium | 18 | 1,090 | $296.57 | โ |
| Alendronate Sodium | Alendronate Sodium | 12 | 952 | $215.79 | โ |
| Diclofenac Sodium | Diclofenac Sodium | 11 | 139 | $364.95 | โ |
| Metoprolol Succinate | Metoprolol Succinate | 11 | 570 | $363.61 | โ |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2022-12-19NUCC Taxonomy Code: 207R00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - HOSPITALIST
I20221227001568
WA
1658741152
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Franciscan Medical Group
1717 S J St, Tacoma, WA 984054933
Phone: 2534266341
Virginia Mason Medical Center
925 Seneca St, Seattle, WA 981012742
Phone: 2062236600
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Dermatology
Doctor of Medicine (M.D.)
Internal Medicine - Pulmonary Disease
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Forensic Psychiatry
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine - Cardiovascular Disease
Doctor of Medicine (M.D.)
Physical Therapist
Physical Therapist
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Internal Medicine (license number reported to NPPES: WA OP61270852)
Registered at 904 7TH AVE FL 9, SEATTLE, WA 981041132 (Tel: 2063291760)
Registered at 904 7TH AVE FL 9, SEATTLE, WA 981041132
Recorded as CHANG LIU, DO
Registered at 5700 E HIGHWAY 90, SIERRA VISTA, AZ 85635 (Tel: 5202633190)
Registered at 5700 E HIGHWAY 90, SIERRA VISTA, AZ 856359110 (Tel: 5202633190)
NPI status registered as active in NPPES database
Registered at 200 MULLINS DR, DO STUDENT CLASS OF 2019, LEBANON, OR 973553983 (Tel: 5038196191)
Registered at 200 MULLINS DR, DO STUDENT CLASS OF 2019, LEBANON, OR 973553983
Recorded as CHANG LIU
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Seattle
- Dr. Aynsley Duncan, MD
- Dr. Maryann Overland, MD
- Dr. Noah Smith, MD
- Dr. Culbert Serrano, MD
- Dr. Andrew Dunn, MD
- Dr. Lindley Barbee, MD, MPH
More public profiles in Washington
Directory navigation, in NPI number order.
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- Lisa Jones, ARNP Nurse Practitioner ยท Seattle
- Hyun Park Yoon, RPH Pharmacist ยท Lakewood
- Bryce Ellgen, DPT Physical Therapist ยท Deer Park
- Joel Eastman, RPH Pharmacist ยท Puyallup
- Krissa Orlowski, PA Physician Assistant ยท Puyallup
- Megan Donnelly, PA Physician Assistant ยท Seattle
- Nancy Gilbert-Taylor, RPH Pharmacist - Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist ยท Port Townsend
- Daniel Lee, MD Ophthalmology ยท Vancouver
- Sabre Patton-Fee Psychiatry & Neurology - Neurology ยท Olympia
- James Nickleson, CRNA Nurse Anesthetist, Certified Registered ยท Spokane
- Sarah Whitehead, ARNP Nurse Practitioner ยท Seattle
Mailing Address
904 7th Ave Fl 9
Seattle, WA 981041132