William Baker, M.D.
NPI 1205854999 · Psychiatry Physician · Milwaukee, WI
William Baker, M.D. is a Psychiatry Physician provider in Milwaukee, WI (NPI 1205854999).
Provider details
- NPI number
- 1205854999
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 23918020 (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
19 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 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Aripiprazole | 99 | — |
| Clozapine | 93 | — |
| Quetiapine Fumarate | 87 | — |
| Escitalopram Oxalate | 78 | — |
| Clonazepam | 67 | 11 |
| Trazodone Hcl | 63 | — |
| Paliperidone Palmitatebrand: Invega Sustenna | 55 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-18
- Last updated
- 2023-03-07
Frequently asked questions
- What is William Baker's NPI number?
- William Baker's National Provider Identifier (NPI) is 1205854999, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Baker's specialty?
- William Baker is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Baker located?
- William Baker's practice location on file with NPPES is 1040 S. 70th St., Milwaukee, WI 53214.
- What is William Baker's phone number?
- The practice phone number listed in the NPPES registry for William Baker is (414) 476-9675.
- Is William Baker's NPI active?
- Yes — William Baker's NPI (1205854999) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.