JOHN A GELZHISER (M.D.) – Internal Medicine Physician, NPI 1013100759
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,155 INTERNAL MEDICINE in RI
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Provider Addresses for JOHN A GELZHISER (M.D.)
Kent Hospital, 455, Toll Gate Road, Apponaug Historic District, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States
WARWICK, RI 028862759
Phone: (401) 737-7000
Fax: (401) 736-4265
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: 2007-11-30
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20071130000567 | I | Internal Medicine | RI | 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 |
|---|---|---|---|---|
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 395 | 177 | $0 |
| 99305 | Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | 236 | 206 | $0 |
| 99306 | Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 221 | 194 | $0 |
| 99308 | Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 63 | 47 | $0 |
Insurance plans in this area (ZIP 02886)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | RI | |
| Physician Assistant | RI | |
| A N E S T H E S I O L O G Y | RI | |
| A N E S T H E S I O L O G Y | RI | |
| Cardiovascular Disease (Cardiology), Interventional Cardiology, Interventional Cardiology, Cardiovascular Disease (Cardiology) | RI | |
| Cardiovascular Disease (Cardiology) | MA | |
| Internal Medicine, Pulmonary Disease, Pulmonary Disease | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | NY | |
| - | RI | |
| Internal Medicine | RI |
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