Quick answers
- Does Zachary J. Gustin accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary J. Gustin 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 J. Gustin see?
- In 2024, CMS data shows 1,201 Original Medicare patients and 4,366 services for Zachary J. Gustin. This counts Original Medicare only and measures volume, not quality.
- What is Zachary J. Gustin's NPI number?
- 1134779820. 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 J. Gustin, 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 | 1,201 |
|---|---|
| Services billed to Medicare | 4,366 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 81 |
Most frequent services
- Removal of fingernails or toenails, 6 or more nails (11721)1,472 services
- Removal of fingernails or toenails, 1-5 nails (11720)693 services
- Residence visit for new patient with low level of medical decision making, per day, if using time, at least 30 minutes (99342)673 services
- Trimming of dystrophic nails, any number (G0127)640 services
- Removal of noncancer thickened skin growth, 1 growth (11055)380 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 pressure64%
- High cholesterol55%
- Diabetes37%
- Arthritis37%
- Depression37%
- Alzheimer's disease or dementia36%
Practice locations
Addresses where Zachary J. Gustin is enrolled with Medicare (CMS data updated October 2, 2026).
- 7612 Adwen StDowney, CA 90241 (562) 291‑1994
Group practices
Medicare enrollment lists Zachary J. Gustin as a member of this group (CMS data updated October 2, 2026).
- Jeffrey Demian Inc26 clinicians in the group
Specialties
- Podiatryprimary
Other podiatrists in Downey
Clinicians with the same Medicare primary specialty in Downey, CA — not a recommendation.
Other clinicians in Jeffrey Demian Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DPM |
|---|---|
| Podiatric medical school | Western Un Of Hlth Sciences, Col Of Podiatric Med |
| Graduation year | 2018 (8 years since podiatric medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134779820 |
| 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