KAY NEGISHI – Internal Medicine Physician, NPI 1194103309
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,251 HOSPITALIST in MA
Provider Addresses for KAY NEGISHI
1493 CAMBRIDGE ST
CAMBRIDGE, MA 021391047
Phone: (617) 591-6300
Type: Mailing
55 Fruit St
Boston, MA 021142621
Phone: (617) 726-2000
Type: Location
1153 Centre St
Jamaica Plain, MA 021303446
Phone: (617) 983-7000
Type: Location
75 Francis St
Boston, MA 021156110
Phone: (617) 732-5500
Type: Location
55 FRUIT ST
BOSTON, MA 021142621
Phone: (617) 726-2000
Type: Mailing
1743 SIDEWINDER DRIVE
UNIT 114
PARK CITY, UT 84060
Phone: (307) 840-9834
Fax: (833) 450-0933
Type: Location
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: 2024-12-27
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 4 Medicare enrollment records; no due dates published yet.
Enrollment records
4
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 |
|---|---|---|---|---|
| I20180518000489 | I | Hospitalist | MA | TBD |
| I20200123000364 | I | Internal Medicine | TX | TBD |
| I20241023004709 | I | Internal Medicine | CO | TBD |
| I20241227002215 | I | Internal Medicine | UT | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 94 | 82 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 42 | 19 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 39 | 37 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 29 | 27 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 02139)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | MA | |
| Diagnostic Radiology | MA | |
| Nephrology, Internal Medicine | MA | |
| Nurse Practitioner | MA | |
| P A T H O L O G Y | NY | |
| P A T H O L O G Y | MA | |
| P S Y C H I A T R Y | MA | |
| Cardiac Electrophysiology, Internal Medicine, Cardiovascular Disease (Cardiology) | MA | |
| H E M A T O L O G Y/ O N C O L O G Y | MA | |
| N E U R O L O G Y | MA |
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