DR. GRANT MASASHI HAYASHI (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1962405290
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
82 PATHOLOGY in NV
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Provider Addresses for DR. GRANT MASASHI HAYASHI (M.D.)
Stardust Street, Reno, Washoe County, Nevada, 89503, United States
STE D
RENO, NV 895034264
Phone: (775) 746-3400
Fax: (775) 746-3411
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2016-02-09
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20060613000243 | I | Pathology | NV | TBD |
| I20160209002839 | I | Pathology | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 280 | 209 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 163 | 46 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 95 | 83 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 64 | 52 | $0 |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 56 | 50 | $0 |
Insurance plans in this area (ZIP 89503)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| P A T H O L O G Y | CA | |
| - | CA | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | MO | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | KS | |
| P A T H O L O G Y | CA |
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