Robert Sexton, MD
NPI 1528563863 · Internal Medicine Physician · Stony Brook, NY
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Sexton, MD is a Internal Medicine Physician provider in Stony Brook, NY (NPI 1528563863).
Provider details
- NPI number
- 1528563863
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 317866 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,087 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 612 | $91 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 262 | $57 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 149 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 64 | $136 |
Typical Medicare-allowed amounts for these services range $57–$136 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-03-28
- Last updated
- 2022-07-15
- Certified
- 2022-07-15
Frequently asked questions
- What is Robert Sexton's NPI number?
- Robert Sexton's National Provider Identifier (NPI) is 1528563863, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Sexton's specialty?
- Robert Sexton is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Sexton located?
- Robert Sexton's practice location on file with NPPES is 101 Nicolls Rd, Stony Brook, NY 11794-1859.
- What is Robert Sexton's phone number?
- The practice phone number listed in the NPPES registry for Robert Sexton is (631) 689-8333.
- Does Robert Sexton accept Medicare?
- Robert Sexton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Sexton's NPI active?
- Yes — Robert Sexton's NPI (1528563863) is active in the NPPES registry as of the last update on 2022-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.