Mary Oestreich, ARNP
NPI 1073165593 · Nurse Practitioner · Everett, WA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Oestreich, ARNP is a Nurse Practitioner provider in Everett, WA (NPI 1073165593).
Provider details
- NPI number
- 1073165593
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Female
- Sole proprietor
- No
- License
- RN60361509 (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 tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
295 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 66 | $107 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 40 | $8 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 38 | $48 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 32 | $76 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 25 | $6 |
| Ferritin (blood Protein) Level82728 | 15 |
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 |
|---|---|---|
| Omeprazole | 186 | 87 |
| Pantoprazole Sodium | 85 | 39 |
| Cholestyramine (with Sugar)brand: Cholestyramine | 33 | — |
| Lansoprazole | 19 | — |
| Famotidine | 18 | — |
| Amitriptyline Hcl | 13 | — |
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 , 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)
- 4011 172nd St NeArlington, WA 98223Phone: (425) 259-0966
Registry dates
- Enumerated
- 2019-07-15
- Last updated
- 2026-04-22
- Certified
- 2026-04-22
Frequently asked questions
- What is Mary Oestreich's NPI number?
- Mary Oestreich's National Provider Identifier (NPI) is 1073165593, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Oestreich's specialty?
- Mary Oestreich is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Oestreich located?
- Mary Oestreich's practice location on file with NPPES is 3927 Rucker Ave, Everett, WA 98201-4833.
- What is Mary Oestreich's phone number?
- The practice phone number listed in the NPPES registry for Mary Oestreich is (425) 339-5421.
- Does Mary Oestreich accept Medicare?
- Mary Oestreich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Oestreich's NPI active?
- Yes — Mary Oestreich's NPI (1073165593) is active in the NPPES registry as of the last update on 2026-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.