Jocelyn Ko, M.D.
NPI 1831478528 · Internal Medicine Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jocelyn Ko, M.D. is a Internal Medicine Physician provider in Seattle, WA (NPI 1831478528).
Provider details
- NPI number
- 1831478528
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 24954 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Quetiapine Fumarate | 36 |
| Trazodone Hcl | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 10 Woodland RdSaint Helena, CA 94574-9554Phone: (707) 963-6399Fax: (707) 967-5915
Registry dates
- Enumerated
- 2011-08-11
- Last updated
- 2025-03-27
- Certified
- 2025-03-27
Frequently asked questions
- What is Jocelyn Ko's NPI number?
- Jocelyn Ko's National Provider Identifier (NPI) is 1831478528, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jocelyn Ko's specialty?
- Jocelyn Ko is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jocelyn Ko located?
- Jocelyn Ko's practice location on file with NPPES is 1334 Terry Ave, Seattle, WA 98101.
- What is Jocelyn Ko's phone number?
- The practice phone number listed in the NPPES registry for Jocelyn Ko is (206) 682-2661.
- Does Jocelyn Ko accept Medicare?
- Jocelyn Ko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jocelyn Ko's NPI active?
- Yes — Jocelyn Ko's NPI (1831478528) is active in the NPPES registry as of the last update on 2025-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.