Susan Trees, PMHNP
NPI 1912219841 · Psychiatric/Mental Health Nurse Practitioner · Central Islip, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Trees, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Central Islip, NY (NPI 1912219841).
Provider details
- NPI number
- 1912219841
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP
- Sex
- Female
- Sole proprietor
- No
- License
- 402351 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 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
139 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 71 | $85 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 33 | $55 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 21 | $122 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 14 | $173 |
Typical Medicare-allowed amounts for these services range $55–$173 (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 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluoxetine Hcl | 84 | 19 |
| Risperidone | 76 | 14 |
| Divalproex Sodium | 70 | 14 |
| Quetiapine Fumarate | 59 | 13 |
| Aripiprazole | 51 | — |
| Benztropine Mesylate | 46 | 14 |
| Lorazepam | 44 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$267 across 7 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
- 2010-07-08
- Last updated
- 2019-05-16
Frequently asked questions
- What is Susan Trees's NPI number?
- Susan Trees's National Provider Identifier (NPI) is 1912219841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Trees's specialty?
- Susan Trees is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Susan Trees located?
- Susan Trees's practice location on file with NPPES is 159 Carleton Ave, Central Islip, NY 11722.
- What is Susan Trees's phone number?
- The practice phone number listed in the NPPES registry for Susan Trees is (631) 650-2510.
- Does Susan Trees accept Medicare?
- Susan Trees is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Trees's NPI active?
- Yes — Susan Trees's NPI (1912219841) is active in the NPPES registry as of the last update on 2019-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.