Dr. Gregory Michael Nicholson, MD
- Industry payments
- $73
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 11401 Bloomfield Ave, Norwalk, CA 90650-2015
- Practice phone
- Call (562) 863-7011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Nicholson'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.
Dr. Gregory Michael Nicholson is a psychiatrist in Norwalk, California
Dr. Nicholson practices in Norwalk, California.
Dr. Nicholson's NPI, 1851489868, was assigned on October 11, 2006. Dr. Nicholson graduated from UVA School of Medicine in 2002. Dr. Nicholson's California license number on file is A86080.
- NPI
- 1851489868NPI Registry (opens in a new tab)
- NPI enumeration date
- October 11, 2006
- NPI status
- Active
- Practice phone
- (562) 863-7011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Gregory Michael Nicholson's practice address is in Norwalk, California
Dr. Nicholson's practice address in the NPI Registry is 11401 Bloomfield Ave, Norwalk, CA 90650-2015. The practice phone is (562) 863-7011.
- NPI Registry address11401 Bloomfield Ave, Norwalk, CA 90650-2015Phone(562) 863-7011
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Gregory Michael Nicholson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nicholson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Nicholson's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Michael Nicholson is one of 6,803 psychiatrists in California
Psychiatry is Dr. Nicholson's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Nicholson has a license on file in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Psychiatrists near Dr. Nicholson
Counts of psychiatrists 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
Dr. Gregory Michael Nicholson received $73 in industry payments from 2024 to 2025
CMS Open Payments shows 2 general payments to Dr. Nicholson from 1 drug or device company from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $73.
General payments to Dr. Nicholson by program year, 2024 to 2025
Companies that paid Dr. Nicholson the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Michael Nicholson graduated from UVA School of Medicine
Dr. Nicholson graduated from UVA School of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Michael Nicholson'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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Dr. Gregory Michael Nicholson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gregory Michael Nicholson's NPI number?
Dr. Gregory Michael Nicholson's NPI number is 1851489868. It was assigned on October 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Michael Nicholson?
Dr. Gregory Michael Nicholson is a psychiatrist in Norwalk, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Gregory Michael Nicholson practice?
Dr. Nicholson practices at 11401 Bloomfield Ave, Norwalk, CA 90650-2015.
What is Dr. Gregory Michael Nicholson's office phone number?
The practice phone on file for Dr. Nicholson is (562) 863-7011.
What is Dr. Gregory Michael Nicholson's medical license number?
Dr. Nicholson's California license number on file is A86080.
Where did Dr. Gregory Michael Nicholson go to medical school?
Dr. Nicholson graduated from UVA School of Medicine in 2002.
Has Dr. Gregory Michael Nicholson received payments from drug or device companies?
CMS Open Payments shows $73 in general payments to Dr. Nicholson from 1 company from 2024 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Gregory Michael Nicholson been practicing?
Dr. Nicholson graduated from medical school in 2002, 24 years ago.
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