Daichi Hayashi, M.D.
NPI 1023453495 · Diagnostic Radiology Physician · Stony Brook, NY
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daichi Hayashi, M.D. is a Diagnostic Radiology Physician provider in Stony Brook, NY (NPI 1023453495).
Provider details
- NPI number
- 1023453495
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 287627 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,043 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 484 | $9 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 117 | $10 |
| X-Ray of Hip, 2-3 Views73502 | 106 | $12 |
| X-Ray of Pelvis, 1-2 Views72170 | 104 | $9 |
| X-Ray of Abdomen, 1 View74018 | 90 | $9 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 89 | $11 |
| X-Ray of Chest, 2 Views71046 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-04-30
- Last updated
- 2022-07-21
- Certified
- 2022-04-09
Frequently asked questions
- What is Daichi Hayashi's NPI number?
- Daichi Hayashi's National Provider Identifier (NPI) is 1023453495, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daichi Hayashi's specialty?
- Daichi Hayashi is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Daichi Hayashi located?
- Daichi Hayashi's practice location on file with NPPES is Department of Radiology Stony Brook Medicine, Stony Brook, NY 11794.
- What is Daichi Hayashi's phone number?
- The practice phone number listed in the NPPES registry for Daichi Hayashi is (631) 444-2484.
- Does Daichi Hayashi accept Medicare?
- Daichi Hayashi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daichi Hayashi's NPI active?
- Yes — Daichi Hayashi's NPI (1023453495) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.