CHRISTOPHER M CALLAHAN (M.D.) – Emergency Medicine Physician, NPI 1417937491
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,171 EMERGENCY MEDICINE in MN
Provider Addresses for CHRISTOPHER M CALLAHAN (M.D.)
1025 Marsh St
Mankato, MN 560014752
Phone: (507) 625-4031
Type: Location
1st Street Southwest, Rochester, Olmsted County, Minnesota, 55903, United States
ROCHESTER, MN 559050001
Phone: (507) 284-2511
Type: Mailing
14700 28TH AVE N STE 25
PLYMOUTH, MN 55447
Phone: (952) 763-5553
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: 2004-02-10
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 |
|---|---|---|---|---|
| I20040210000111 | I | Emergency Medicine | MN | 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 |
|---|---|---|---|---|
| 99284 | Emergency department visit with moderate level of medical decision making | 21 | 21 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 17 | 17 | $0 |
| 99285 | Emergency department visit with high level of medical decision making | 11 | 11 | $0 |
Insurance plans in this area (ZIP 56001)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Hospitalist, Internal Medicine | MN | |
| Emergency Medicine | MN | |
| Emergency Medicine | CO | |
| Diagnostic Radiology | ND | |
| Certified Registered Nurse Anesthetist (Crna) | MN | |
| Emergency Medicine | MN | |
| - | MN | |
| Hospice/Palliative Care, Internal Medicine, Hospitalist | MN | |
| Internal Medicine | KS | |
| Nurse Practitioner | MN |
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