Robert Charles Hirst, DDS, MS
- Industry payments
- $47
- Affiliated sites
- 2
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 27871 Medical Center Rd Ste 260 Suite 260, Mission Viejo, CA 92691-6406
- Practice phone
- Call (949) 364-2850
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ajay Setya
Dental practice · Mission Viejo, California
Find Robert Hirst'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.
Robert Charles Hirst is a periodontist in Mission Viejo, California
Robert Hirst practices at Ajay Setya in Mission Viejo, California.
Robert Hirst's NPI, 1356488134, was assigned on January 31, 2007. Robert Hirst holds California license 21996.
- NPI
- 1356488134NPI Registry (opens in a new tab)
- NPI enumeration date
- January 31, 2007
- NPI status
- Active
- Practice phone
- (949) 364-2850
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Robert Charles Hirst practices at Ajay Setya in Mission Viejo, California
Robert Hirst's primary practice is Ajay Setya, at 27871 Medical Center Rd Ste 260 Suite 260, Mission Viejo, CA 92691-6406. The practice phone is (949) 364-2850.
- Ajay Setya27871 Medical Center Rd Ste 260 Suite 260, Mission Viejo, CA 92691-6406Phone(949) 364-2850
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Robert Charles Hirst is affiliated with 2 sites of care and 2 medical groups
Robert Hirst's primary practice is Ajay Setya in Mission Viejo, California. Dmand AI also links Robert Hirst to 2 medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Robert Charles Hirst's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Robert Hirst practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ajay Setya | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Robert Charles Hirst is one of 371 periodontists in California
Periodontics is Robert Hirst's primary specialty in the NPI Registry, under taxonomy code 1223P0300X. Robert Hirst is licensed in California.
Specialties and state licenses
- Periodontist, CaliforniaPrimary
Periodontists near Robert Hirst
Counts of periodontists 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
Robert Charles Hirst received $47 in industry payments in 2025
CMS Open Payments shows 1 general payment to Robert Hirst from 1 drug or device company in 2025. Entertainment make up the largest share, 100% of the total. Keystone Dental Inc. paid the most, $47.
Companies that paid Robert Hirst the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Robert Charles Hirst'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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 Robert Charles Hirst
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Robert Charles Hirst's NPI number?
Robert Charles Hirst's NPI number is 1356488134. It was assigned on January 31, 2007, and it is active in the NPI Registry.
What does Robert Charles Hirst specialize in?
Robert Charles Hirst is a periodontist in Mission Viejo, California. The primary specialty in the NPI Registry is Periodontist (taxonomy code 1223P0300X).
Where does Robert Charles Hirst practice?
Robert Hirst practices at 27871 Medical Center Rd Ste 260 Suite 260, Mission Viejo, CA 92691-6406. Robert Hirst's primary practice is Ajay Setya in Mission Viejo, California. Dmand AI also links Robert Hirst to 2 medical groups and 1 group practice or clinic.
What is Robert Charles Hirst's office phone number?
The practice phone on file for Robert Hirst is (949) 364-2850.
What is Robert Charles Hirst's medical license number?
Robert Hirst holds California license 21996.
Has Robert Charles Hirst received payments from drug or device companies?
CMS Open Payments shows $47 in general payments to Robert Hirst from 1 company from 2025 to 2025. The largest total came from Keystone Dental Inc.
How long has Robert Charles Hirst been practicing?
Robert Hirst's NPI was assigned in 2007.
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