Gregory Seth Alter, PhD
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice locations
- 2
- Practice address
- 3093 Broadway, Oakland, CA 94611-5779
- Practice phone
- Call (510) 734-0885
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
AlterGroup
Physician office · Oakland, California
Find Gregory Alter'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.
Gregory Seth Alter is a clinical psychologist in Oakland, California
Gregory Alter practices at AlterGroup in Oakland, California.
Gregory Alter's NPI, 1528168366, was assigned on September 22, 2006. Gregory Alter holds California license PSY7422.
- NPI
- 1528168366NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719977396
- NPI enumeration date
- September 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 734-0885
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory Seth Alter practices at 2 locations in Oakland, California
Gregory Alter's primary practice is AlterGroup, at 3093 Broadway, Oakland, CA 94611-5779. The practice phone is (510) 734-0885. The NPI Registry lists Gregory Alter's practice address as 5666 Telegraph Ave, Oakland, CA 94609.
- AlterGroupPrimary3093 Broadway, Oakland, CA 94611-5779Phone(510) 734-0885
- NPI Registry address5666 Telegraph Ave, Oakland, CA 94609
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Gregory Seth Alter is affiliated with 1 site of care
Gregory Alter's primary practice is AlterGroup in Oakland, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gregory Seth Alter's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Alter practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| AlterGroup | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory Seth Alter is one of 3,615 clinical psychologists in California
Clinical is Gregory Alter's primary specialty in the NPI Registry, under taxonomy code 103TC0700X. Gregory Alter is licensed in California.
Specialties and state licenses
- Clinical psychologist, CaliforniaPrimary
Clinical psychologists near Gregory Alter
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
Gregory Seth Alter's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Gregory Alter's median patient age at 63, with 46% women.
Gregory Alter's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women46%
- Men50%
Source: Dmand AI Patient Panel Data
Gregory Seth Alter offers telehealth to Medicare patients
Gregory Alter accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Gregory Alter as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Gregory Seth Alter'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 Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Gregory Seth Alter
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory Seth Alter's NPI number?
Gregory Seth Alter's NPI number is 1528168366. It was assigned on September 22, 2006, and it is active in the NPI Registry.
What does Gregory Seth Alter specialize in?
Gregory Seth Alter is a clinical psychologist in Oakland, California. The primary specialty in the NPI Registry is Clinical Psychologist (taxonomy code 103TC0700X).
Where does Gregory Seth Alter practice?
Gregory Alter practices at 3093 Broadway, Oakland, CA 94611-5779. Gregory Alter also practices at 5666 Telegraph Ave, Oakland, CA 94609. Gregory Alter's primary practice is AlterGroup in Oakland, California.
What is Gregory Seth Alter's office phone number?
The practice phone on file for Gregory Alter is (510) 734-0885.
What is Gregory Seth Alter's medical license number?
Gregory Alter holds California license PSY7422.
Does Gregory Seth Alter accept Medicare?
Yes. CMS lists Gregory Alter as accepting Medicare assignment.
Does Gregory Seth Alter offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Gregory Alter as offering telehealth services.
How long has Gregory Seth Alter been practicing?
Gregory Alter graduated from medical school in 1979, 47 years ago.
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