Carol Oas, MN ARNP
NPI 1518001668 · Psychiatric/Mental Health Nurse Practitioner · Port Angeles, WA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carol Oas, MN ARNP is a Psychiatric/Mental Health Nurse Practitioner provider in Port Angeles, WA (NPI 1518001668).
Provider details
- NPI number
- 1518001668
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MN ARNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- AP30006082 (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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
188 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 188 | $153 |
Typical Medicare-allowed amounts for these services range $153–$153 (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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 23 |
| Trazodone Hcl | 20 |
| Risperidone | 19 |
| Lithium Carbonatebrand: Lithium Carbonate Er | 17 |
| Duloxetine Hcl | 13 |
| Citalopram Hydrobromidebrand: Citalopram Hbr | 12 |
| Clonazepam | 12 |
| Lamotrigine | 12 |
| Bupropion Hclbrand: Bupropion Xl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-20
- Last updated
- 2023-08-01
- Certified
- 2023-08-01
Frequently asked questions
- What is Carol Oas's NPI number?
- Carol Oas's National Provider Identifier (NPI) is 1518001668, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carol Oas's specialty?
- Carol Oas is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Carol Oas located?
- Carol Oas's practice location on file with NPPES is 113 So Eunice St, Port Angeles, WA 98362.
- What is Carol Oas's phone number?
- The practice phone number listed in the NPPES registry for Carol Oas is (360) 460-3836.
- Does Carol Oas accept Medicare?
- Carol Oas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carol Oas's NPI active?
- Yes — Carol Oas's NPI (1518001668) is active in the NPPES registry as of the last update on 2023-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.