DR. JOHN T HAMM (M.D.) – Medical Oncology Physician, NPI 1023075660
Medical Oncology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
72 MEDICAL ONCOLOGY in KY
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Provider Addresses for DR. JOHN T HAMM (M.D.)
Norton Healthcare Pavilion, 315, East Broadway, Louisville, Jefferson County, Kentucky, 40202, United States
LOUISVILLE, KY 402021703
Phone: (502) 272-5754
Fax: (502) 272-5339
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)
CMS reports 21 Open Payments records for all available years, with a total value of $17,947.
Total Amount is formed as General ($16,345) + Research ($1,602) + Ownership ($0) = $17,947.
Last reported payment date: 2024-12-31 • Largest payer in this snapshot: JAZZ PHARMACEUTICALS INC. ($7,885).
Total Amount
$17,947
General + Research + Ownership
Payments
21
Total payment records
General Amount
$16,345
General payments
Research Amount
$1,602
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-31
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| JAZZ PHARMACEUTICALS INC. | $7,885 |
| Novocure Inc. | $5,438 |
| Amgen Inc. | $2,865 |
| F. Hoffmann-La Roche AG | $1,179 |
| PFIZER INC. | $333 |
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: 2011-12-12
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 |
|---|---|---|---|---|
| I20101221000803 | I | Medical Oncology | KY | TBD |
| I20111212000380 | I | Hematology/Oncology | IN | 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 | 570 | 210 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 181 | 52 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 94 | 54 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 42 | 35 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 28 | 28 | $0 |
Insurance plans in this area (ZIP 40202)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Radiation Oncology | KY | |
| Nurse Practitioner | KY | |
| Gynecological Oncology | NY | |
| Nurse Practitioner | IL | |
| Anesthesiology, Pain Management, Pain Management | KY | |
| Internal Medicine, Hematology/Oncology | OH | |
| Physician Assistant | KY | |
| O B S T E T R I C S/ G Y N E C O L O G Y | KY | |
| - | IL | |
| Hospice/Palliative Care, Internal Medicine | KY |
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