Julian Horwitz, MD
NPI 1770901449 · Transplant Surgery Physician · Seattle, WA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Julian Horwitz, MD is a Transplant Surgery Physician provider in Seattle, WA (NPI 1770901449).
Provider details
- NPI number
- 1770901449
- Entity type
- Individual
- Primary specialty
- Transplant Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD61417180 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
191 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 142 | $54 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 20 | $72 |
| Transplantation of Donor Kidney50360 | 16 | $2,207 |
| Preparation of Donor Kidney for Transplantation50323 | 13 | $97 |
Typical Medicare-allowed amounts for these services range $54–$2,207 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 45 | 17 |
| Pantoprazole Sodium | 38 | 19 |
| Valganciclovir Hcl | 30 | 16 |
| Ursodiol | 22 | — |
| Calcitriol | 21 | — |
| Amlodipine Besylate | 21 | 11 |
| Tacrolimus | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$190 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
Registry dates
- Enumerated
- 2014-03-31
- Last updated
- 2024-01-19
- Certified
- 2024-01-19
Frequently asked questions
- What is Julian Horwitz's NPI number?
- Julian Horwitz's National Provider Identifier (NPI) is 1770901449, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Julian Horwitz's specialty?
- Julian Horwitz is listed in the NPPES registry with a primary specialty of Transplant Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Julian Horwitz located?
- Julian Horwitz's practice location on file with NPPES is 1124 Columbia St Ste 600, Seattle, WA 98104-2046.
- What is Julian Horwitz's phone number?
- The practice phone number listed in the NPPES registry for Julian Horwitz is (206) 386-3660.
- Does Julian Horwitz accept Medicare?
- Julian Horwitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Julian Horwitz's NPI active?
- Yes — Julian Horwitz's NPI (1770901449) is active in the NPPES registry as of the last update on 2024-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.