DR. JOHN PHILIP MESMER (M.D.) – Emergency Medicine Physician, NPI 1518914951
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,131 EMERGENCY MEDICINE in TN
Loading map...
Provider Addresses for DR. JOHN PHILIP MESMER (M.D.)
Boom Box Buns, 1324, Main Street, Main Street Business District, Over-the-Rhine, Cincinnati, Hamilton County, Ohio, 45202, United States
CINCINNATI, OH 452630001
Phone:
Type: Mailing
Methodist Medical Center of Oak Ridge, 990, Oak Ridge Turnpike, Jackson Square, Oak Ridge, Anderson County, Tennessee, 37831, United States
OAK RIDGE, TN 378306976
Phone: (865) 481-1000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
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: 2004-11-23
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 |
|---|---|---|---|---|
| I20041123000194 | I | Emergency Medicine | TN | 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 |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 352 | 340 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 214 | 209 | $0 |
| 99291 | Critical care, first 30-74 minutes | 52 | 51 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 34 | 34 | $0 |
| 99282 | Emergency department visit with straightforward medical decision making | 11 | 11 | $0 |
Insurance plans in this area (ZIP 45263)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TN | |
| Emergency Medicine | TN | |
| Emergency Medicine | WV | |
| - | AR | |
| Emergency Medicine | MA | |
| - | TN | |
| - | KY | |
| Emergency Medicine, Internal Medicine, Emergency Medicine | FL | |
| Emergency Medicine | TX | |
| Family Practice, Emergency Medicine | AR |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.