Joseph Hannan, M.D.
NPI 1417022377 · Psychiatry Physician · Santa Rosa, CA
Joseph Hannan, M.D. is a Psychiatry Physician provider in Santa Rosa, CA (NPI 1417022377).
Provider details
- NPI number
- 1417022377
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C-35267 (CA)
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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 39 |
| Trazodone Hcl | 34 |
| Bupropion Hclbrand: Bupropion Hcl Sr | 33 |
| Clonazepam | 17 |
| Escitalopram Oxalate | 17 |
| Lamotrigine | 17 |
| Fluoxetine Hcl | 13 |
| Sertraline Hcl | 13 |
| Aripiprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-22
- Last updated
- 2007-07-09
Frequently asked questions
- What is Joseph Hannan's NPI number?
- Joseph Hannan's National Provider Identifier (NPI) is 1417022377, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Hannan's specialty?
- Joseph Hannan is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Hannan located?
- Joseph Hannan's practice location on file with NPPES is 2235 Challenger Way, Santa Rosa, CA 95407-5458.
- What is Joseph Hannan's phone number?
- The practice phone number listed in the NPPES registry for Joseph Hannan is (707) 528-7262.
- Is Joseph Hannan's NPI active?
- Yes — Joseph Hannan's NPI (1417022377) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.