William Davis, PMHNP-BC
NPI 1659581270 · Nurse Practitioner · Paw Paw, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Davis, PMHNP-BC is a Nurse Practitioner provider in Paw Paw, MI (NPI 1659581270).
Provider details
- NPI number
- 1659581270
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP-BC
- Sex
- Male
- Sole proprietor
- No
- License
- 4704211030 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service 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
19 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
150 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 | 139 | $101 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 11 | $137 |
Typical Medicare-allowed amounts for these services range $101–$137 (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 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 333 | 57 |
| Alprazolam | 273 | 46 |
| Quetiapine Fumarate | 206 | 56 |
| Aripiprazole | 182 | 55 |
| Lamotrigine | 175 | 31 |
| Trazodone Hcl | 164 | 46 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,432 across 63 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
- 2007-05-23
- Last updated
- 2026-02-05
- Certified
- 2026-02-05
Frequently asked questions
- What is William Davis's NPI number?
- William Davis's National Provider Identifier (NPI) is 1659581270, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Davis's specialty?
- William Davis is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Davis located?
- William Davis's practice location on file with NPPES is 801 Hazen St Ste C, Paw Paw, MI 49079-2008.
- What is William Davis's phone number?
- The practice phone number listed in the NPPES registry for William Davis is (269) 655-3348.
- Does William Davis accept Medicare?
- William Davis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Davis's NPI active?
- Yes — William Davis's NPI (1659581270) is active in the NPPES registry as of the last update on 2026-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.