Kyle O'Brien, APRN
NPI 1639950744 · Gerontology Nurse Practitioner · Guilford, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kyle O'Brien, APRN is a Gerontology Nurse Practitioner provider in Guilford, CT (NPI 1639950744).
Provider details
- NPI number
- 1639950744
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Male
- Sole proprietor
- No
- License
- 12501 (CT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
2 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
148 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 66 | $98 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $81 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 19 | $114 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 18 | $148 |
Typical Medicare-allowed amounts for these services range $81–$148 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 159 | 157 |
| Famotidine | 91 | 45 |
| Omeprazole | 64 | 33 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 61 | 60 |
| Pantoprazole Sodium | 51 | 24 |
| Sod Sulf/Pot Chloride/Mag Sulfbrand: Sutab | 22 | 21 |
| Linaclotidebrand: Linzess |
Practice location
Mailing address
Additional practice locations (1)
- 40 Temple StNew Haven, CT 06510-2715Phone: (877) 925-3637
Registry dates
- Enumerated
- 2023-10-13
- Last updated
- 2023-10-13
- Certified
- 2023-10-13
Frequently asked questions
- What is Kyle O'Brien's NPI number?
- Kyle O'Brien's National Provider Identifier (NPI) is 1639950744, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kyle O'Brien's specialty?
- Kyle O'Brien is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kyle O'Brien located?
- Kyle O'Brien's practice location on file with NPPES is 800 Boston Post Rd, Guilford, CT 06437-2747.
- What is Kyle O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Kyle O'Brien is (877) 925-3637.
- Does Kyle O'Brien accept Medicare?
- Kyle O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kyle O'Brien's NPI active?
- Yes — Kyle O'Brien's NPI (1639950744) is active in the NPPES registry as of the last update on 2023-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.