Quick answers
- Does Julie Anne L. Gemmill accept Medicare assignment?
- Yes. Medicare's clinician data says Julie Anne L. Gemmill accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Julie Anne L. Gemmill see?
- In 2024, CMS data shows 149 Original Medicare patients and 503 services for Julie Anne L. Gemmill. This counts Original Medicare only and measures volume, not quality.
- What is Julie Anne L. Gemmill's NPI number?
- 1619313160. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Julie Anne L. Gemmill, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 149 |
|---|---|
| Services billed to Medicare | 503 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)205 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)119 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)90 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)27 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)23 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)60%
- Diabetes37%
- Arthritis36%
- Ischemic heart disease35%
Hospitals where Julie Anne L. Gemmill works
Medicare's Facility Affiliation Data lists Julie Anne L. Gemmill at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330393
Practice locations
Addresses where Julie Anne L. Gemmill is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 100 Nicolls RdStony Brook, NY 11794
- 100 Nicolls Rd, HematologyStonybrook, NY 11794 (631) 444‑7643
- 101 Nicolls RdStony Brook, NY 11794 (631) 444‑0580
- 26 Research WayEast Setauket, NY 11733 (631) 444‑0580
- 3 Edmond D Pellegrino RdStony Brook, NY 11794 (631) 638‑1000
Group practices
Medicare enrollment lists Julie Anne L. Gemmill as a member of this group (CMS data updated October 2, 2026).
- Stony Brook Internists University Faculty Practice Corporation428 clinicians in the group
Specialties
- Medical Oncologyprimary
Other oncologists in Stony Brook
Clinicians with the same Medicare primary specialty in Stony Brook, NY — not a recommendation.
Other clinicians in Stony Brook Internists University Faculty Practice Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619313160 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians