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Mark Hirshfeld, LCSW
NPI 1225120223 · Clinical Social Worker · Ventura, CA
Mark Hirshfeld, LCSW is a Clinical Social Worker provider in Ventura, CA (NPI 1225120223).
Provider details
- NPI number
- 1225120223
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- LCS14788 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
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.
Practice location
3585 Maple St
Suite 265
Ventura, CA 93003-3504
Phone: (805) 658-9900
Fax: (805) 658-9900
Street-level locationGet directions
Mailing address
Po Box 824
Agoura Hills, CA 91376-0824
Registry dates
- Enumerated
- 2006-09-28
- Last updated
- 2023-06-30
- Certified
- 2023-06-30
Frequently asked questions
- What is Mark Hirshfeld's NPI number?
- Mark Hirshfeld's National Provider Identifier (NPI) is 1225120223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Hirshfeld's specialty?
- Mark Hirshfeld is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Hirshfeld located?
- Mark Hirshfeld's practice location on file with NPPES is 3585 Maple St, Ventura, CA 93003-3504.
- What is Mark Hirshfeld's phone number?
- The practice phone number listed in the NPPES registry for Mark Hirshfeld is (805) 658-9900.
- Is Mark Hirshfeld's NPI active?
- Yes — Mark Hirshfeld's NPI (1225120223) is active in the NPPES registry as of the last update on 2023-06-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.