William Hyatt, MD, PHD
NPI 1356928907 · Psychiatry Physician · Rhinelander, WI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hyatt, MD, PHD is a Psychiatry Physician provider in Rhinelander, WI (NPI 1356928907).
Provider details
- NPI number
- 1356928907
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 85977-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Aripiprazole | 52 |
| Trazodone Hcl | 46 |
| Escitalopram Oxalate | 29 |
| Sertraline Hcl | 28 |
| Ziprasidone Hcl | 25 |
| Prazosin Hcl | 25 |
| Oxcarbazepine | 22 |
| Paliperidone Palmitatebrand: Invega Sustenna | 20 |
| Olanzapine | 16 |
| Fluoxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-28
- Last updated
- 2025-07-08
- Certified
- 2025-06-22
Frequently asked questions
- What is William Hyatt's NPI number?
- William Hyatt's National Provider Identifier (NPI) is 1356928907, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hyatt's specialty?
- William Hyatt is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Hyatt located?
- William Hyatt's practice location on file with NPPES is 1630 N Chippewa Dr, Rhinelander, WI 54501-9503.
- What is William Hyatt's phone number?
- The practice phone number listed in the NPPES registry for William Hyatt is (715) 361-5480.
- Does William Hyatt accept Medicare?
- William Hyatt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hyatt's NPI active?
- Yes — William Hyatt's NPI (1356928907) is active in the NPPES registry as of the last update on 2025-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.