Mark Swoiskin, M.D.
NPI 1144352493 · Psychiatry Physician · Mill Valley, CA
Mark Swoiskin, M.D. is a Psychiatry Physician provider in Mill Valley, CA (NPI 1144352493).
Provider details
- NPI number
- 1144352493
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G66057 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lamotrigine | 38 |
| Lorazepam | 23 |
| Zolpidem Tartrate | 23 |
| Clonazepam | 20 |
| Mirtazapine | 17 |
| Bupropion Hclbrand: Bupropion Xl | 16 |
| Vortioxetine Hydrobromidebrand: Trintellix | 12 |
| Escitalopram Oxalate | 12 |
| Daridorexant Hclbrand: Quviviq |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Swoiskin's NPI number?
- Mark Swoiskin's National Provider Identifier (NPI) is 1144352493, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Swoiskin's specialty?
- Mark Swoiskin is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Swoiskin located?
- Mark Swoiskin's practice location on file with NPPES is 655 Redwood Hwy Ste 255, Mill Valley, CA 94941-3025.
- What is Mark Swoiskin's phone number?
- The practice phone number listed in the NPPES registry for Mark Swoiskin is (415) 384-0612.
- Is Mark Swoiskin's NPI active?
- Yes — Mark Swoiskin's NPI (1144352493) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.