Marianne O'Brien, MA, SLP
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2016
- Practice address
- 21151 S Western Ave Ste 119, Torrance, CA 90501
- Practice phone
- Call (276) 234-4679
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
South Bay Speech Therapy Clinic
Speech Therapy Clinic · Torrance, California
Find Marianne O'Brien's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Marianne O'Brien is a speech-language pathologist in Torrance, California
Marianne O'Brien practices at South Bay Speech Therapy Clinic in Torrance, California.
Marianne O'Brien's NPI, 1083071633, was assigned on January 26, 2016. Marianne O'Brien holds California license SP4849.
- NPI
- 1083071633NPI Registry (opens in a new tab)
- NPI enumeration date
- January 26, 2016
- NPI status
- Active
- Practice phone
- (276) 234-4679
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Marianne O'Brien practices at South Bay Speech Therapy Clinic in Torrance, California
Marianne O'Brien's primary practice is South Bay Speech Therapy Clinic, at 21151 S Western Ave Ste 119, Torrance, CA 90501. The practice phone is (276) 234-4679.
- South Bay Speech Therapy Clinic21151 S Western Ave Ste 119, Torrance, CA 90501Phone(276) 234-4679
Source: Dmand AI Affiliation Data
Marianne O'Brien is affiliated with 2 sites of care and 1 medical group
Marianne O'Brien's primary practice is South Bay Speech Therapy Clinic in Torrance, California. The medical group on file is South Bay Speech Therapy Clinic. Dmand AI also links Marianne O'Brien to 1 more group practice or clinic, named with a free account. Marianne O'Brien's employer is on file too: a physical therapy & rehab clinic.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marianne O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marianne O'Brien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| South Bay Speech Therapy Clinic | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Marianne O'Brien is one of 1,959 speech-language pathologists in California
Speech-language pathologist is Marianne O'Brien's primary specialty in the NPI Registry, under taxonomy code 235Z00000X. Marianne O'Brien is licensed in California.
Specialties and state licenses
- Speech-language pathologist, CaliforniaPrimary
Speech-language pathologists near Marianne O'Brien
Counts of speech-language pathologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Marianne O'Brien's patients have a median age of 11
Across all payers, Dmand AI patient panel data puts Marianne O'Brien's median patient age at 11, with 35% women.
Marianne O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 11
Patient panel by sex, all payers
- Women35%
- Men62%
Source: Dmand AI Patient Panel Data
Sources for Marianne O'Brien's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Marianne O'Brien
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marianne O'Brien's NPI number?
Marianne O'Brien's NPI number is 1083071633. It was assigned on January 26, 2016, and it is active in the NPI Registry.
What does Marianne O'Brien specialize in?
Marianne O'Brien is a speech-language pathologist in Torrance, California. The primary specialty in the NPI Registry is Speech-Language Pathologist (taxonomy code 235Z00000X).
Where does Marianne O'Brien practice?
Marianne O'Brien practices at 21151 S Western Ave Ste 119, Torrance, CA 90501. Marianne O'Brien's primary practice is South Bay Speech Therapy Clinic in Torrance, California. Dmand AI also links Marianne O'Brien to 1 group practice or clinic.
What is Marianne O'Brien's office phone number?
The practice phone on file for Marianne O'Brien is (276) 234-4679.
What is Marianne O'Brien's medical license number?
Marianne O'Brien holds California license SP4849.
What medical group is Marianne O'Brien part of?
Marianne O'Brien is linked to South Bay Speech Therapy Clinic.
How long has Marianne O'Brien been practicing?
Marianne O'Brien's NPI was assigned in 2016.
Selling to speech-language pathologist practices?
See speech-language pathologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card