Quick answers
- Does Dennis S. Strittmatter accept Medicare assignment?
- Yes. Medicare's clinician data says Dennis S. Strittmatter 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 Dennis S. Strittmatter see?
- In 2024, CMS data shows 256 Original Medicare patients and 1,379 services for Dennis S. Strittmatter. This counts Original Medicare only and measures volume, not quality.
- What is Dennis S. Strittmatter's NPI number?
- 1508840711. 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 Dennis S. Strittmatter, 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 | 256 |
|---|---|
| Services billed to Medicare | 1,379 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)276 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)80 services
- Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina (76830)64 services
- Dxa bone density measurement of hip, pelvis, spine (77080)55 services
- Insertion of needle into vein for collection of blood sample (36415)43 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 cholesterol75%
- High blood pressure68%
- Arthritis52%
- Osteoporosis41%
- Anxiety25%
- Diabetes21%
Hospitals where Dennis S. Strittmatter works
Medicare's Facility Affiliation Data lists Dennis S. Strittmatter 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.
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330185
- Long Island Community HospitalPatchogue, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330141
- 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 Dennis S. Strittmatter is enrolled with Medicare (CMS data updated October 2, 2026).
- 48 Route 25aSmithtown, NY 11787 (631) 751‑3000
Group practices
Medicare enrollment lists Dennis S. Strittmatter as a member of this group (CMS data updated October 2, 2026).
- North Shore Hematology Oncology Associates PC479 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Smithtown
Clinicians with the same Medicare primary specialty in Smithtown, NY — not a recommendation.
Other clinicians in North Shore Hematology Oncology Associates PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508840711 |
| 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