Quick answers
- Does Denise Schindlar-Ahlgrim accept Medicare assignment?
- Yes. Medicare's clinician data says Denise Schindlar-Ahlgrim 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 Denise Schindlar-Ahlgrim see?
- In 2024, CMS data shows 11 Original Medicare patients and 230 services for Denise Schindlar-Ahlgrim. This counts Original Medicare only and measures volume, not quality.
- What is Denise Schindlar-Ahlgrim's NPI number?
- 1285835538. 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 Denise Schindlar-Ahlgrim, 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 | 11 |
|---|---|
| Services billed to Medicare | 230 |
| Different services or procedures | 3 |
| Participating Medicare provider | Yes |
| Average age of these patients | 63 |
Practice locations
Addresses where Denise Schindlar-Ahlgrim is enrolled with Medicare (CMS data updated October 2, 2026).
- 11700 Main Rd, Suite 1Mattituck, NY 11952 (888) 975‑2256
- 28 N Country Rd, Suite 203Mount Sinai, NY 11766 (888) 975‑2256
- 28 N Country Rd, Suite 203Mt Sinai, NY 11766
Group practices
Medicare enrollment lists Denise Schindlar-Ahlgrim as a member of this group (CMS data updated October 2, 2026).
- Calm Seas Psychotherapy LCSW PLLC5 clinicians in the group
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Mattituck
Clinicians with the same Medicare primary specialty in Mattituck, NY — not a recommendation.
Other clinicians in Calm Seas Psychotherapy LCSW PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 1996 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285835538 |
| 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
- 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