Nathaniel Chang, PA-C
NPI 1538539135 · Physician Assistant · Seattle, WA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Chang, PA-C is a Physician Assistant provider in Seattle, WA (NPI 1538539135).
Provider details
- NPI number
- 1538539135
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- PA60664724 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
333 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 215 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $85 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 29 | $114 |
| Administration of Influenza Virus VaccineG0008 | 18 | $36 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 13 | $121 |
| Admn Sarscov2 Vacc 1 Dose90480 | 11 | $48 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 36 | 16 |
| Lisinopril | 23 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 16 | — |
| Trazodone Hcl | 16 | — |
| Amlodipine Besylate | 15 | — |
| Losartan Potassium | 14 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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.
$19 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 (1)
- 8712 236th Ave NeRedmond, WA 98053-1978Phone: (425) 241-6041
Registry dates
- Enumerated
- 2015-09-25
- Last updated
- 2018-07-10
Frequently asked questions
- What is Nathaniel Chang's NPI number?
- Nathaniel Chang's National Provider Identifier (NPI) is 1538539135, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Chang's specialty?
- Nathaniel Chang is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nathaniel Chang located?
- Nathaniel Chang's practice location on file with NPPES is 1959 Ne Pacific St, Seattle, WA 98195.
- What is Nathaniel Chang's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Chang is (206) 520-5700.
- Does Nathaniel Chang accept Medicare?
- Nathaniel Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Chang's NPI active?
- Yes — Nathaniel Chang's NPI (1538539135) is active in the NPPES registry as of the last update on 2018-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.