Quick answers
- Does Ana C. Tuyama accept Medicare assignment?
- Yes. Medicare's clinician data says Ana C. Tuyama 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 Ana C. Tuyama see?
- In 2024, CMS data shows 194 Original Medicare patients and 402 services for Ana C. Tuyama. This counts Original Medicare only and measures volume, not quality.
- What is Ana C. Tuyama's NPI number?
- 1083872584. 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 Ana C. Tuyama, 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 | 194 |
|---|---|
| Services billed to Medicare | 402 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)100 services
- Biopsy of large bowel using a flexible endoscope (45380)67 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)52 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)40 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)38 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 cholesterol73%
- High blood pressure51%
- Arthritis45%
- Anxiety29%
- Osteoporosis29%
- Depression25%
Practice locations
Addresses where Ana C. Tuyama is enrolled with Medicare (CMS data updated October 2, 2026).
- 300 Cadman Plz W, Fl 18Brooklyn, NY 11201 (718) 280‑0020
- 311 E 79th St, 2aNew York, NY 10075 (212) 996‑6633
Group practices
Medicare enrollment lists Ana C. Tuyama as a member of this group (CMS data updated October 2, 2026).
- New York Gastroenterology Associates LLP25 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Brooklyn
Clinicians with the same Medicare primary specialty in Brooklyn, NY — not a recommendation.
Other clinicians in New York Gastroenterology Associates LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1083872584 |
| 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