Caitlyn Elizabeth O'Brien, PA-C
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2025
- Practice address
- 1728 Sunrise Hwy, Merrick, NY 11566
- Practice phone
- Call (516) 992-4700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Orlin & Cohen Medical Specialists Group
Merrick, New York
Find Caitlyn 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.
Caitlyn Elizabeth O'Brien is a physician assistant in Merrick, New York
Caitlyn O'Brien practices at Orlin & Cohen Medical Specialists Group in Merrick, New York.
Caitlyn O'Brien's NPI, 1194515882, was assigned on May 7, 2025.
- NPI
- 1194515882NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042714859
- NPI enumeration date
- May 7, 2025
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (516) 992-4700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 27
- Medical school graduation
- 2025
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Caitlyn Elizabeth O'Brien practices at Orlin & Cohen Medical Specialists Group in Merrick, New York
Caitlyn O'Brien's primary practice is Orlin & Cohen Medical Specialists Group, at 1728 Sunrise Hwy, Merrick, NY 11566 in Nassau County. The practice phone is (516) 992-4700.
- Orlin & Cohen Medical Specialists Group1728 Sunrise Hwy, Merrick, NY 11566 · Nassau CountyPhone(516) 992-4700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Caitlyn Elizabeth O'Brien is affiliated with 2 sites of care and 1 medical group
Caitlyn O'Brien's primary practice is Orlin & Cohen Medical Specialists Group in Merrick, New York. The medical group on file is Orlin & Cohen Orthopedic Group. Dmand AI also links Caitlyn O'Brien to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Caitlyn Elizabeth O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Caitlyn O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orlin & Cohen Medical Specialists Group | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Caitlyn Elizabeth O'Brien is one of 11,456 physician assistants in New York
Physician assistant is Caitlyn O'Brien's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Caitlyn O'Brien has a license on file in New York.
Specialties and state licenses
- Physician assistant, New York
Physician assistants near Caitlyn O'Brien
Counts of physician assistants 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
Caitlyn Elizabeth O'Brien's patients have a median age of 18
Across all payers, Dmand AI patient panel data puts Caitlyn O'Brien's median patient age at 18, with 40% women.
Caitlyn 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 18
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
How Caitlyn Elizabeth O'Brien takes part in Medicare
Caitlyn O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Caitlyn Elizabeth 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 | 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 |
| 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 Caitlyn Elizabeth 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 Caitlyn Elizabeth O'Brien's NPI number?
Caitlyn Elizabeth O'Brien's NPI number is 1194515882. It was assigned on May 7, 2025, and it is active in the NPI Registry.
What does Caitlyn Elizabeth O'Brien specialize in?
Caitlyn Elizabeth O'Brien is a physician assistant in Merrick, New York. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Caitlyn Elizabeth O'Brien practice?
Caitlyn O'Brien practices at 1728 Sunrise Hwy, Merrick, NY 11566. Caitlyn O'Brien's primary practice is Orlin & Cohen Medical Specialists Group in Merrick, New York. Dmand AI also links Caitlyn O'Brien to 1 group practice or clinic.
What is Caitlyn Elizabeth O'Brien's office phone number?
The practice phone on file for Caitlyn O'Brien is (516) 992-4700.
What medical group is Caitlyn Elizabeth O'Brien part of?
Caitlyn O'Brien is linked to Orlin & Cohen Orthopedic Group.
Does Caitlyn Elizabeth O'Brien accept Medicare?
Yes. CMS lists Caitlyn O'Brien as accepting Medicare assignment.
How long has Caitlyn Elizabeth O'Brien been practicing?
Caitlyn O'Brien graduated from medical school in 2025, 1 years ago.
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