Mark Anstadt, ARNP
NPI 1144414145 · Nurse Practitioner · Seattle, WA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Anstadt, ARNP is a Nurse Practitioner provider in Seattle, WA (NPI 1144414145).
Provider details
- NPI number
- 1144414145
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Male
- Sole proprietor
- No
- License
- AP30007837 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
18 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
1,085 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) |
|---|---|---|
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 173 | $13 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 164 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 155 | $119 |
| Measurement C-Reactive Protein for Detection of Infection Or Inflammation, High Sensitivity86141 | 154 | $13 |
| Blood Glucose (sugar) Level82947 | 133 | $4 |
| Liver Enzyme (sgpt), Level84460 | 51 | $5 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Evolocumabbrand: Repatha Sureclick | 234 | 59 |
| Alirocumabbrand: Praluent Pen | 152 | 36 |
| Rosuvastatin Calcium | 114 | 42 |
| Ezetimibe | 76 | 25 |
| Bempedoic Acidbrand: Nexletol | 31 | — |
| Icosapent Ethylbrand: Vascepa | 16 | — |
| Colchicine | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$289 across 6 records (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
- 2007-09-01
- Last updated
- 2018-05-18
Frequently asked questions
- What is Mark Anstadt's NPI number?
- Mark Anstadt's National Provider Identifier (NPI) is 1144414145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Anstadt's specialty?
- Mark Anstadt is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Anstadt located?
- Mark Anstadt's practice location on file with NPPES is 904 7th Ave, Seattle, WA 98104.
- What is Mark Anstadt's phone number?
- The practice phone number listed in the NPPES registry for Mark Anstadt is (206) 860-5603.
- Does Mark Anstadt accept Medicare?
- Mark Anstadt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Anstadt's NPI active?
- Yes — Mark Anstadt's NPI (1144414145) is active in the NPPES registry as of the last update on 2018-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.