Calista Ku
Nurse Practitioner โข Seattle, WA
904 7th Ave
Seattle, WA 98104
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 August 31, 2017; this date does not establish years in practice.
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Published CMS data list 378 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99212 โ Established patient outpatient office visit: 158 service units.
- 85610 โ Blood test, clotting time: 116 service units.
- 99213 โ Established patient outpatient office visit: 54 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 4 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 382 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Warfarin Sodium โ 357 prescription fills, including refills.
- Jantoven (Warfarin Sodium) โ 14 prescription fills, including refills.
- Enoxaparin Sodium โ 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 80% of clinicians listed under Nurse Practitioner in Seattle, WA (2024, 236 clinicians with data). Median for this group: 148. Middle half: 58 to 305.
More Medicare Part B services than 65% of clinicians listed under Nurse Practitioner in Washington (2024, 893 clinicians with data). Median for this group: 238. Middle half: 85 to 506.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 980 in 2020 to 378 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
904 7th Ave
Seattle, WA 98104
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Bothell, WA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Overlake Medical Clinics Llc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2017
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
130 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $11,851 in 2024
The total amount Medicare approved for these services in 2024. 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, 2024.
Paid by Medicare
About $7,453 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, 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, 2024.
30-day fills
908 standardized 30-day fills in 2024
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
$4,291 in 2024
The total cost of these prescriptions in 2024, 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, 2024.
Open Payments general payments, program year 2025
All general payments: $468.94 across 12 records.
By nature of payment
- Food and Beverage: $438.97 across 11 records.
- Long term medical supply or device loan: $29.97 across 1 record.
Reporting-company totals (3 largest of 8)
- Novo Nordisk Inc: $164.78 across 3 records.
- Dexcom, Inc.: $117.21 across 2 records.
- Abbott Laboratories: $52.59 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
9 years (graduated 2017)
CMS Doctors and Clinicians data list 2017 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.
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; 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.
Enrolled in Medicare (PECOS)
Calista Ku 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 Calista Ku 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 services
More Medicare Part B services than 80% of clinicians listed under Nurse Practitioner in Seattle, WA (2024, 236 clinicians with data). Median for this group: 148. Middle half: 58 to 305.
More Medicare Part B services than 65% of clinicians listed under Nurse Practitioner in Washington (2024, 893 clinicians with data). Median for this group: 238. Middle half: 85 to 506.
Medicare-allowed amount
Close to the middle for clinicians listed under Nurse Practitioner in Seattle, WA (2024, 236 clinicians with data). Median for this group: $12,233. Middle half: $5,473 to $24,211.
A lower Medicare-allowed amount than 60% of clinicians listed under Nurse Practitioner in Washington (2024, 893 clinicians with data). Median for this group: $18,750. Middle half: $7,191 to $35,797.
Paid by Medicare
Close to the middle for clinicians listed under Nurse Practitioner in Seattle, WA (2024, 236 clinicians with data). Median for this group: $9,272. Middle half: $3,821 to $18,376.
A lower Medicare payment amount than 65% of clinicians listed under Nurse Practitioner in Washington (2024, 893 clinicians with data). Median for this group: $13,884. Middle half: $5,264 to $26,346.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Nurse Practitioner in Seattle, WA (2024, 238 clinicians with data). Median for this group: 156. Middle half: 55 to 512.
Close to the middle for clinicians listed under Nurse Practitioner in Washington (2024, 1,098 clinicians with data). Median for this group: 282. Middle half: 75 to 886.
Part D drug cost
Close to the middle for clinicians listed under Nurse Practitioner in Seattle, WA (2024, 238 clinicians with data). Median for this group: $11,440. Middle half: $1,016 to $117,162.
A lower Part D drug cost than 60% of clinicians listed under Nurse Practitioner in Washington (2024, 1,098 clinicians with data). Median for this group: $11,818. Middle half: $1,137 to $111,411.
573 active clinicians are listed under Nurse Practitioner with a practice address in Seattle, WA (2,335 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Seattle
28.3% of these 573 clinicians have the CMS telehealth indicator.
57.8% of these 573 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 decreased 61% from 980 in 2020 to 378 in 2024.
- 2020: 980
- 2021: 1,912
- 2022: 263
- 2023: 1,287
- 2024: 378
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Medicare-allowed amount
Medicare-allowed amount increased 76% from $6,732 in 2020 to $11,851 in 2024.
- 2020: $6,732
- 2021: $52,296
- 2022: $8,429
- 2023: $40,546
- 2024: $11,851
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Paid by Medicare
Paid by Medicare increased 27% from $5,848 in 2020 to $7,453 in 2024.
- 2020: $5,848
- 2021: $41,254
- 2022: $6,768
- 2023: $31,611
- 2024: $7,453
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 54% from 826 in 2020 to 382 in 2024.
- 2020: 826
- 2021: 606
- 2022: 30
- 2023: 170
- 2024: 382
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30-day fills
30-day fills decreased 54% from 1,991 in 2020 to 908 in 2024.
- 2020: 1,991
- 2021: 1,432
- 2022: 64
- 2023: 368
- 2024: 908
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Part D drug cost
Part D drug cost decreased 81% from $22,056 in 2020 to $4,291 in 2024.
- 2020: $22,056
- 2021: $14,582
- 2022: $568
- 2023: $3,358
- 2024: $4,291
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $13.83 in 2023 to $468.94 in 2025.
- 2023: $13.83
- 2024: $216.72
- 2025: $468.94
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 12 records totaling $468.94.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $125.00 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
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Dexcom G6 Transmitter | General | $96.80 |
| Bayer Healthcare Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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Kerendia | General | $34.92 |
| Abbott Laboratories |
Long term medical supply or device loan
In-kind items and services
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FREESTYLE INSULINX | General | $29.97 |
| Edwards Lifesciences Corporation |
Food and Beverage
In-kind items and services
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EDWARDS SAPIEN 3 TRANSCATHETER HEART VALVE (THV) | General | $29.32 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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EVENITY | General | $24.74 |
| Tandem Diabetes Care, Inc. |
Food and Beverage
In-kind items and services
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t:slim X2 Insulin Pump with Control-IQ | General | $23.58 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
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FREESTYLE LIBRE 3 | General | $22.62 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Wegovy | General | $22.10 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $21.80 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
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Dexcom G6 Transmitter | General | $20.41 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $17.68 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018โ2023 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, 2019โ2024; 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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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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158 | 96 | $129.92 | $43.06 |
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85610
Blood test, clotting time
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116 | 41 | $40.95 | $4.20 |
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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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54 | 36 | $224.87 | $74.72 |
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93793
Anticoagulant management of patient taking warfarin
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50 | 13 | $31.27 | $10.50 |
Source: CMS Part B by Provider and Service, 2024; 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 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Warfarin Sodium | Warfarin Sodium | 357 | 23,906 | $3,650.54 | 136 |
| Jantoven | Warfarin Sodium | 14 | 1,280 | $146.10 | โ |
| Enoxaparin Sodium | Enoxaparin Sodium | 11 | 78 | $494.00 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363LP2300X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20180523002571
WA
7810252798
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
Overlake Medical Clinics Llc
1035 116th Ave Ne, Bellevue, WA 980044604
Phone: 4256885072
Overlake Medical Clinics Llc
1035 116th Ave Ne, Bellevue, WA 980044604
Overlake Medical Clinics Llc
1750 112th Ave Ne, Bellevue, WA 980043772
Phone: 4256885460
Overlake Medical Clinics Llc
1740 Nw Maple St, Issaquah, WA 980278127
Secondary Practice Locations
18323 98th Ave Ne Ste 3
Bothell, WA 980113358
Phone: 4258068360
18323 98th Ave Ne Ste 3
Bothell, WA 980113358
Phone: 4258068360
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner
Advanced Registered Nurse Practitioner, MN, Doctor of Education (Ed.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 904 7TH AVE, SEATTLE, WA 98104 (Tel: 2068604669)
Registered at 1145 BROADWAY FL 2, SEATTLE, WA 981224201 (Tel: 2068604669)
Additional practice office at 18323 98th Ave NE Ste 3, Bothell, WA 980113358
Nurse Practitioner (license number reported to NPPES: WA AP60778925)
NPI status registered as active in NPPES database
Registered at 18323 98TH AVE NE STE 3, BOTHELL, WA 980113358 (Tel: 4258068360)
Registered at 15306 SE 42ND ST, BELLEVUE, WA 980061744
Recorded as CALISTA KU
Nurse Practitioner (license number reported to NPPES: WA AP60778925)
Registered at 18323 98TH AVE NE STE 3, BOTHELL, WA 980113358 (Tel: 4258068360)
NPI status registered as active in NPPES database
Registered at 15306 SE 42ND ST, BELLEVUE, WA 980061744 (Tel: 2063837892)
Registered at 15306 SE 42ND ST, BELLEVUE, WA 980061744
Recorded as CALISTA KU
Registered Nurse (license number reported to NPPES: WA RN60565099)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Seattle
- Dr. Neal Cragg, DNP, ARNP, RN
- Kelly Chandler, ARNP
- Christa Parish, ARNP
- Jormain Cady, ARNP
- Dr. Alyssa Ochsner, ARNP, DNP
- Dr. Patricia Giurgevich, ARNP, MN, EdD
Mailing Address
1145 Broadway Fl 2
Seattle, WA 981224201
Phone: 2068604669