Robert Gardner, M.D.
NPI 1023179850 · Psychiatry Physician · Santa Rosa, CA
Robert Gardner, M.D. is a Psychiatry Physician provider in Santa Rosa, CA (NPI 1023179850).
Provider details
- NPI number
- 1023179850
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G17718 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 65 | 14 |
| Aripiprazole | 57 | 12 |
| Lamotrigine | 54 | — |
| Lorazepam | 51 | — |
| Liothyronine Sodium | 33 | — |
| Fluvoxamine Maleate | 32 | — |
| Mirtazapine | 30 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-13
- Last updated
- 2009-09-28
Frequently asked questions
- What is Robert Gardner's NPI number?
- Robert Gardner's National Provider Identifier (NPI) is 1023179850, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Gardner's specialty?
- Robert Gardner is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Gardner located?
- Robert Gardner's practice location on file with NPPES is 525 College Ave, Santa Rosa, CA 95404-4118.
- What is Robert Gardner's phone number?
- The practice phone number listed in the NPPES registry for Robert Gardner is (707) 575-7647.
- Is Robert Gardner's NPI active?
- Yes — Robert Gardner's NPI (1023179850) is active in the NPPES registry as of the last update on 2009-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.