Nathan Tolley, DO
NPI 1235666389 · Psychiatry Physician · Mount Vernon, WA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Tolley, DO is a Psychiatry Physician provider in Mount Vernon, WA (NPI 1235666389).
Provider details
- NPI number
- 1235666389
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 0061698 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 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
264 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 177 | $95 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 49 | $48 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 38 | $127 |
Typical Medicare-allowed amounts for these services range $48–$127 (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 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 108 | 26 |
| Trazodone Hcl | 86 | 20 |
| Fluoxetine Hcl | 84 | 19 |
| Olanzapine | 76 | 11 |
| Lamotrigine | 71 | 15 |
| Diazepam | 55 | — |
| Duloxetine Hcl | 51 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 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
- 2017-05-20
- Last updated
- 2025-12-10
- Certified
- 2025-12-10
Frequently asked questions
- What is Nathan Tolley's NPI number?
- Nathan Tolley's National Provider Identifier (NPI) is 1235666389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Tolley's specialty?
- Nathan Tolley is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Tolley located?
- Nathan Tolley's practice location on file with NPPES is 901 S 5th St, Mount Vernon, WA 98274-3942.
- What is Nathan Tolley's phone number?
- The practice phone number listed in the NPPES registry for Nathan Tolley is (360) 814-7300.
- Does Nathan Tolley accept Medicare?
- Nathan Tolley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Tolley's NPI active?
- Yes — Nathan Tolley's NPI (1235666389) is active in the NPPES registry as of the last update on 2025-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.