Quick answers
- Does Alexei Kartachov accept Medicare assignment?
- Yes. Medicare's clinician data says Alexei Kartachov 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 Alexei Kartachov see?
- In 2024, CMS data shows 47 Original Medicare patients and 235 services for Alexei Kartachov. This counts Original Medicare only and measures volume, not quality.
- What is Alexei Kartachov's NPI number?
- 1780640086. 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 Alexei Kartachov, 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 | 47 |
|---|---|
| Services billed to Medicare | 235 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 52 |
Most frequent services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)122 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)98 services
- Psychiatric diagnostic evaluation with medical services (90792)12 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 cholesterol74%
- High blood pressure51%
- Diabetes49%
- Anxiety49%
- Depression43%
- Arthritis36%
Practice locations
Addresses where Alexei Kartachov is enrolled with Medicare (CMS data updated October 2, 2026).
- 15 Horseblock PlFarmingville, NY 11738 (631) 854‑2552
- 3500 Sunrise Hwy 124, PO Box 9006Great River, NY 11739
- 998 Crooked Hill RdBrentwood, NY 11717 (631) 306‑5732
Group practices
Medicare enrollment lists Alexei Kartachov as a member of these groups (CMS data updated October 2, 2026).
- Phoenix Houses of Long Island Inc10 clinicians in the group
- County of Suffolk9 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in Phoenix Houses of Long Island Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1983 (43 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1780640086 |
| 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