JOHN THOMAS ZIMMERMANN (M.D.) – Medical Oncology Physician, NPI 1740221225
Medical Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
10 MEDICAL ONCOLOGY in AK
Provider Addresses for JOHN THOMAS ZIMMERMANN (M.D.)
2490 S WOODWORTH LOOP
#499
PALMER, AK 996457405
Phone: (907) 746-7771
Fax: (907) 746-7798
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 64 Open Payments records for all available years, with a total value of $3,795.
Total Amount is formed as General ($3,795) + Research ($0) + Ownership ($0) = $3,795.
Last reported payment date: 2024-12-04 • Largest payer in this snapshot: Myriad Genetic Laboratories, Inc. ($417).
Total Amount
$3,795
General + Research + Ownership
Payments
64
Total payment records
General Amount
$3,795
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-04
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Myriad Genetic Laboratories, Inc. | $417 |
| EMD Serono, Inc. | $402 |
| AstraZeneca Pharmaceuticals LP | $375 |
| Janssen Biotech, Inc. | $286 |
| E.R. Squibb & Sons, L.L.C. | $206 |
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: 2020-08-19
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 |
|---|---|---|---|---|
| I20160406001182 | I | Medical Oncology | GA | TBD |
| I20200819004175 | I | Medical Oncology | WY | 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 |
|---|---|---|---|---|
| J1439 | Injection, ferric carboxymaltose, 1 mg | 21,000 | 13 | $0 |
| J9271 | Injection, pembrolizumab, 1 mg | 14,600 | 15 | $0 |
| J0897 | Injection, denosumab, 1 mg | 9,960 | 26 | $0 |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | 1,262 | 30 | $0 |
| G6015 | Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session | 521 | 36 | $0 |
Insurance plans in this area (ZIP 99645)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology, Nuclear Medicine | MD | |
| - | OH | |
| - | WY | |
| Physician Assistant | WY | |
| Medical Oncology | WY | |
| Radiation Oncology | WY | |
| Radiation Oncology | WA | |
| Physician Assistant | WY | |
| H E M A T O L O G Y/ O N C O L O G Y | AZ | |
| Nurse Practitioner | WY |
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