Geoff Raymond Twitchell, PhD
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Geoff Twitchell'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.
Geoff Raymond Twitchell is a clinical psychologist in Stockton, California
Geoff Twitchell practices at Permanente Medical Group Inc in Stockton, California.
Geoff Twitchell's NPI, 1386658482, was assigned on July 27, 2006. Geoff Twitchell holds California license PSY17509.
- NPI
- 1386658482NPI Registry (opens in a new tab)
- NPI enumeration date
- July 27, 2006
- NPI status
- Active
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Geoff Raymond Twitchell practices at Permanente Medical Group Inc in Stockton, California
Geoff Twitchell's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Geoff Raymond Twitchell is affiliated with 1 site of care and 1 medical group
Geoff Twitchell's primary practice is Permanente Medical Group Inc in Stockton, California. The medical group on file is The Permanente Medical Group, Inc.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Geoff Raymond Twitchell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Geoff Twitchell practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
Source: Dmand AI Technology Install Data
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Geoff Raymond Twitchell is one of 3,615 clinical psychologists in California
Clinical is Geoff Twitchell's primary specialty in the NPI Registry, under taxonomy code 103TC0700X. Geoff Twitchell is licensed in California.
Specialties and state licenses
- Clinical psychologist, CaliforniaPrimary
Clinical psychologists near Geoff Twitchell
Counts of clinical psychologists 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
Geoff Raymond Twitchell's patients have a median age of 36
Across all payers, Dmand AI patient panel data puts Geoff Twitchell's median patient age at 36, with 47% women.
Geoff Twitchell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women47%
- Men53%
Source: Dmand AI Patient Panel Data
Sources for Geoff Raymond Twitchell'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Geoff Raymond Twitchell
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Geoff Raymond Twitchell's NPI number?
Geoff Raymond Twitchell's NPI number is 1386658482. It was assigned on July 27, 2006, and it is active in the NPI Registry.
What does Geoff Raymond Twitchell specialize in?
Geoff Raymond Twitchell is a clinical psychologist in Stockton, California. The primary specialty in the NPI Registry is Clinical Psychologist (taxonomy code 103TC0700X).
Where does Geoff Raymond Twitchell practice?
Geoff Twitchell practices at 7373 West Ln, Stockton, CA 95210. Geoff Twitchell's primary practice is Permanente Medical Group Inc in Stockton, California.
What is Geoff Raymond Twitchell's office phone number?
The practice phone on file for Geoff Twitchell is (209) 476-2000.
What is Geoff Raymond Twitchell's medical license number?
Geoff Twitchell holds California license PSY17509.
What medical group is Geoff Raymond Twitchell part of?
Geoff Twitchell is linked to The Permanente Medical Group, Inc.
How long has Geoff Raymond Twitchell been practicing?
Geoff Twitchell's NPI was assigned in 2006.
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