Katherine Dejong, MD
NPI 1255794392 · Obstetrics & Gynecology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Dejong, MD is a Obstetrics & Gynecology Physician provider in Seattle, WA (NPI 1255794392).
Provider details
- NPI number
- 1255794392
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD61052175 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
4 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Estradiol | 15 |
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 550 16th Ave Ste 100Seattle, WA 98122-5636Phone: (206) 320-2484Fax: (206) 320-4568
- 5350 Tallman Ave Nw Ste 420Seattle, WA 98107-5902Phone: (206) 781-6161Fax: (206) 781-6285
- 1801 Nw Market St Ste 207Seattle, WA 98107-3909Phone: (206) 320-3576Fax: (206) 860-6725
Registry dates
- Enumerated
- 2016-04-05
- Last updated
- 2021-10-20
- Certified
- 2021-10-20
Frequently asked questions
- What is Katherine Dejong's NPI number?
- Katherine Dejong's National Provider Identifier (NPI) is 1255794392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Dejong's specialty?
- Katherine Dejong is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Dejong located?
- Katherine Dejong's practice location on file with NPPES is 1101 Madison St Ste 700, Seattle, WA 98104-3599.
- What is Katherine Dejong's phone number?
- The practice phone number listed in the NPPES registry for Katherine Dejong is (206) 215-6300.
- Does Katherine Dejong accept Medicare?
- Katherine Dejong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Dejong's NPI active?
- Yes — Katherine Dejong's NPI (1255794392) is active in the NPPES registry as of the last update on 2021-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.