Jocelyn Ko, M.D.
Internal Medicine Physician · Seattle, WA
Jocelyn Ko, M.D. is an internal medicine physician with a practice address in Seattle, Washington, and NPI 1831478528, issued on Aug 11, 2011. Check the license on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Jocelyn Ko
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A141259 CA
49046 AZ
0073451 CO
MD2014-0525 NM
24954 NV
and 1 more
Self-reported in NPPES; status is on the state search - Practice location
- 1334 Terry Ave, Seattle, WA 98101
- Phone
- (206) 682-2661
- Enumerated
- Aug 11, 2011
- Record last updated
- Mar 27, 2025
- Medicare enrollment
- Enrolled (PECOS I20180215001909); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 1334 Terry Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Saada AbdelaNurse Practitioner1881474716
- Mohammed Alhyraba, MDCritical Care Medicine (Internal Medicine) Physician1578686697
- Susan Casperson, ARNPAdult Health Nurse Practitioner1558898411
- Yi Deng, PHARM.D.Pharmacist1861281370
- Estevan Gonzalez, RNCritical Care Medicine Registered Nurse1215744438
- Mindy Hamilton, OTROccupational Therapist1962950139
Verify Jocelyn Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical CommissionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
188 Medicare Part D claims for 45 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Quetiapine Fumarate36 claims
- Trazodone Hcl14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 3 group practices
- BC Collective OF GA LLCPrescott, AZ
- Mulberry Medical LLCTempe, AZ
- Seattle Internist Group PLLCSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jocelyn Ko among 3,079 internal medicine physician records in Washington
Jocelyn Ko, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 65% of them.
- NPI issued2011 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2011 · median 2006 among the 1,852 with a school on file
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
821 internal medicine physician records list a practice address in Seattle
They are 821 of the 41,956 NPPES records with a practice address in Seattle, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Seattle → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lesley Althouse, MDSeattle, WA 981011669402608
- Leslie Bailey, M.D.Seattle, WA 981011255366613
- A Bender, MDSeattle, WA 981011265462634
- Christopher Carlsten, MDSeattle, WA 981011891734208
- Stephan Fihn, MDSeattle, WA 981011225098320
- Richard Furlong, MDSeattle, WA 981011457370777
- Carrie Horwitch, MDSeattle, WA 981011477574325
- Paul Kassab, MDSeattle, WA 981011740287275
Common questions
What is Jocelyn Ko, M.D.'s NPI number?
Jocelyn Ko, M.D.'s National Provider Identifier (NPI) is 1831478528, issued on Aug 11, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Jocelyn Ko, M.D. located?
The NPPES record lists a practice address at 1334 Terry Ave, Seattle, WA, 98101. Phone: (206) 682-2661. Providers update this record themselves, so call before visiting.
How can I verify Jocelyn Ko, M.D.'s license?
Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jocelyn Ko, M.D. prescribe under Medicare Part D?
In 2024, Jocelyn Ko, M.D. had 188 Medicare Part D claims for 45 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.