Dr. Genji Terasaki, MD

  • Seattle, WA
  • Internist
NPI1508942228PAC ID9234174392
Medicare services, 2024
527
Medicare patients, 2024
95
Part D claims, 2024
5,091
Publications
5
MIPS score, 2024
94
Practice address
325 9th Avenue, Seattle, WA 98104
Practice phone
Call (206) 744-9535
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Harborview Medical Center

Hospital · Seattle, Washington

See all 4 affiliations

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Dr. Genji Terasaki is an internist in Seattle, Washington

Dr. Terasaki practices at Harborview Medical Center in Seattle, Washington, part of University of Washington.

Dr. Terasaki's NPI, 1508942228, was assigned on October 27, 2006. Dr. Terasaki graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2001. Dr. Terasaki holds Washington license MD00043145.

NPI and contact details
Medicare PAC ID
9234174392
NPI enumeration date
October 27, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(206) 744-9535
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
51
Medical school graduation
2001

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Genji Terasaki practices at Harborview Medical Center in Seattle, Washington

Dr. Terasaki's primary practice is Harborview Medical Center, at 325 9th Avenue, Seattle, WA 98104 in King County. The practice phone is (206) 744-9535.

Source: Dmand AI Affiliation Data

Dr. Genji Terasaki is affiliated with 2 sites of care and 2 medical groups

Dr. Terasaki's primary practice is Harborview Medical Center in Seattle, Washington, part of University of Washington. The medical group on file is UW Physicians. Dmand AI also links Dr. Terasaki to 1 more hospital and 1 medical group, each named with a free account.

See all 4 affiliations for Dr. Terasaki

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Genji Terasaki's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Terasaki practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Harborview Medical CenterAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Genji Terasaki is one of 2,689 internists in Washington

Internal medicine is Dr. Terasaki's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Terasaki is licensed in Washington.

Specialties and state licenses

  • Internal medicine, WashingtonPrimaryLicense MD00043145 · taxonomy 207R00000X

Internists near Dr. Terasaki

Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Genji Terasaki billed Medicare for 527 services in 2024

CMS data shows 527 Medicare services from Dr. Terasaki across 4 procedure codes in 2024, for 95 Medicare patients. Medicare paid $24,052 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024527
Medicare patients95
Paid by Medicare$24,052
Procedure codes4

Dr. Terasaki's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2852024: 32815%
Other services
2023: 02024: 199

Dr. Terasaki compared with the Washington median for internists, 2024

  • Dr. Terasaki
  • Washington median
Medicare services
527vs 36445% above
Medicare patients
95vs 16542% below
Part D claims
4,582vs 18225.2 times

Medians across 2,604 internists in Washington with Dmand AI profiles that report each measure.

Dr. Terasaki's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Terasaki

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Genji Terasaki treated 95 Medicare patients in 2024, average age 74

CMS counts 95 Medicare patients who saw Dr. Terasaki in 2024. The largest group is 65 to 74, with 43 patients. 66% of them have high blood pressure, and 55% have high cholesterol. 82% are also on Medicaid. Their average risk score is 1.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Terasaki's median patient age at 67, with 49% women.

Medicare patients, 202495
Average age74
Average risk score1.67
Also on Medicaid82%

Dr. Terasaki's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Terasaki's Medicare patients by sex, 2024

  • Women6467%
  • Men3133%

Chronic conditions among Dr. Terasaki's Medicare patients, 2024

  1. High blood pressure66%
  2. High cholesterol55%
  3. Diabetes39%
  4. Arthritis34%
  5. Mood disorders23%
  6. Osteoporosis23%
  7. Chronic kidney disease22%
  8. Depression22%

Share of Medicare patients with each condition. A patient can have several.

Dr. Terasaki's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women49%
  • Men51%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Genji Terasaki wrote 5,091 Medicare Part D claims in 2024

In 2024, Dr. Terasaki wrote 5,091 Medicare Part D claims for 171 patients. 81% of them were for generic drugs. CMS names the drug for 4,582 of them, across 93 drugs with 11 or more claims each, at $328,522 in total drug cost. In 2023, CMS named 4,575 claims across 87 drugs.

Part D claims, 20245,091
Drugs named by CMS93
Total drug cost$328,522
Part D patients171

Dr. Terasaki's Part D claims by kind of drug, 2024

  • Generic4,147 claims81%
  • Brand-name875 claims17%
  • Other69 claims1%

Dr. Terasaki's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Terasaki's Part D claims, 2024

  • Opioids0%18 of 5,091 claims
  • Antibiotics0%16 of 5,091 claims
  • Antipsychotics, patients 65 and over0%17 of 5,091 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 4,5752024: 4,582No change

Drugs named by CMS: 93 in 2024, 87 in 2023.

See all prescribing by Dr. Terasaki

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Genji Terasaki scored 94 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Terasaki for performance year 2024, reported through an alternative payment model (APM). Dr. Terasaki accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Terasaki as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Terasaki's MIPS scores, performance year 2024

  • 94of 100Final score
  • 74.6of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Genji Terasaki has 5 publications on record

Dmand AI links 5 papers to Dr. Terasaki, published from 2010 to 2015. Dr. Terasaki has published most often in Med Clin North Am. Dr. Terasaki's most frequent co-authors are Mahri Zohra Haider, MD, MPH, Nicole C. Ahrenholz and Kamal Sami Ajam, MD.

Papers5
Years published2010 to 2015

Dr. Terasaki's papers by year, 2010 to 2015

Dr. Terasaki's most frequent co-authors

Recent publications by Dr. Terasaki

See all 5 publications and co-authors

See who Dr. Terasaki researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Terasaki works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Genji Terasaki graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University

Dr. Terasaki graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2001.

  1. Medical schoolClvlnd Clinic Lerner College of Med of Case Wstn Rsv University

Source: Dmand AI Professional Profile Data

Sources for Dr. Genji Terasaki's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Genji Terasaki

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Genji Terasaki's NPI number?

Dr. Genji Terasaki's NPI number is 1508942228. It was assigned on October 27, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Genji Terasaki?

Dr. Genji Terasaki is an internist in Seattle, Washington. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Genji Terasaki practice?

Dr. Terasaki practices at 325 9th Avenue, Seattle, WA 98104. Dr. Terasaki's primary practice is Harborview Medical Center in Seattle, Washington, part of University of Washington. Dmand AI also links Dr. Terasaki to 1 hospital and 1 medical group.

What is Dr. Genji Terasaki's office phone number?

The practice phone on file for Dr. Terasaki is (206) 744-9535.

What is Dr. Genji Terasaki's medical license number?

Dr. Terasaki holds Washington license MD00043145.

Which hospitals is Dr. Genji Terasaki affiliated with?

Dr. Terasaki practices at Harborview Medical Center in Seattle, Washington. Dmand AI links Dr. Terasaki to 1 more hospital.

What medical group is Dr. Genji Terasaki part of?

Dr. Terasaki is linked to UW Physicians. Dmand AI links Dr. Terasaki to 1 more medical group.

Does Dr. Genji Terasaki accept Medicare?

Yes. CMS data shows Dr. Terasaki billed Medicare for 527 services in 2024, and Dr. Terasaki accepts Medicare assignment.

Does Dr. Genji Terasaki offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Terasaki as offering telehealth services.

What is Dr. Genji Terasaki's MIPS score?

Dr. Terasaki's MIPS final score for performance year 2024 is 94 out of 100, reported through an alternative payment model (APM).

Show 7 more questionsShow fewer questions

How many Medicare patients does Dr. Genji Terasaki see?

CMS counts 95 Medicare patients who saw Dr. Terasaki in 2024, with an average age of 74.

What services does Dr. Genji Terasaki bill to Medicare?

In 2024, Dr. Terasaki's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and hospital inpatient care (99232).

Where did Dr. Genji Terasaki go to medical school?

Dr. Terasaki graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2001.

What drugs does Dr. Genji Terasaki prescribe most?

In 2024 Medicare Part D data, Dr. Terasaki's most prescribed drugs by claims were Amlodipine Besylate, Omeprazole and Atorvastatin Calcium.

How long has Dr. Genji Terasaki been practicing?

Dr. Terasaki graduated from medical school in 2001, 25 years ago.

Does Dr. Genji Terasaki do research?

Dmand AI links 5 publications to Dr. Terasaki, published from 2010 to 2015.

Who does Dr. Genji Terasaki publish with?

Dr. Terasaki's most frequent co-authors are Mahri Zohra Haider, MD, MPH (2 shared papers), Nicole C. Ahrenholz (1 shared paper) and Kamal Sami Ajam, MD (1 shared paper).

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