Quick answers
- Does Zachary Caldwell accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary Caldwell 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 Zachary Caldwell see?
- In 2024, CMS data shows 79 Original Medicare patients and 90 services for Zachary Caldwell. This counts Original Medicare only and measures volume, not quality.
- What is Zachary Caldwell's NPI number?
- 1639575236. 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 Zachary Caldwell, 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 | 79 |
|---|---|
| Services billed to Medicare | 90 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Anesthesia for x-ray on arteries (01924)86 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%
- Diabetes75%
- Chronic kidney disease75%
- Ischemic heart disease71%
- Heart failure67%
Practice locations
Addresses where Zachary Caldwell is enrolled with Medicare (CMS data updated October 2, 2026).
- 10721 Queens Blvd, Suite 4Forest Hills, NY 11375 (516) 626‑1000
- 1110 Hallock AvePort Jefferson Station, NY 11776 (631) 476‑9100
- 5314 Roosevelt Ave, Suite 302Woodside, NY 11377 (516) 626‑1000
- 8708 Justice Ave, Suite 14Elmhurst, NY 11373 (718) 507‑8866
Group practices
Medicare enrollment lists Zachary Caldwell as a member of these groups (CMS data updated October 2, 2026).
- Quality Medical Management Corp31 clinicians in the group
- New Day Medical PC26 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), New York →
Other nurse anesthetists in Forest Hills
Clinicians with the same Medicare primary specialty in Forest Hills, NY — not a recommendation.
Other clinicians in Quality Medical Management Corp
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| School | University Of Maryland School Of Medicine |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639575236 |
| 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