NANCY G. MICHAELIS (M.D.) – Internal Medicine Physician, NPI 1467452425
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,526 INTERNAL MEDICINE in TN
Provider Addresses for NANCY G. MICHAELIS (M.D.)
975 EAST THIRD STREET
ATTN: PROVIDER ENROLLMENT
CHATTANOOGA, TN 374032147
Phone: (423) 778-3110
Fax: (423) 778-3146
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: 2019-12-11
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 |
|---|---|---|---|---|
| I20140725001802 | I | Internal Medicine | TN | TBD |
| I20191211002841 | I | Internal Medicine | GA | 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 |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 315 | 309 | $0 |
| 99291 | Critical care, first 30-74 minutes | 79 | 78 | $0 |
| 99497 | Advance care planning, first 30 minutes | 13 | 13 | $0 |
Insurance plans in this area (ZIP 37403)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TN | |
| - | KY | |
| Radiation Oncology | WV | |
| Internal Medicine | TN | |
| Internal Medicine | TN | |
| - | TN | |
| - | TN | |
| Nurse Practitioner | TN | |
| Certified Registered Nurse Anesthetist (Crna) | TN | |
| Certified Registered Nurse Anesthetist (Crna) | TN |
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