MR. JOHN MACLIN SR. BARNWELL (M.D.) – Surgical Oncology Physician, NPI 1831105550
Surgical Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,444 GENERAL SURGERY in MI
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Provider Addresses for MR. JOHN MACLIN SR. BARNWELL (M.D.)
18709, Meyers Road, Schulze, Detroit, Wayne County, Michigan, 48235, United States
DETROIT, MI 48235
Phone: (313) 864-8456
Fax: (313) 864-0079
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 7 Open Payments records for all available years, with a total value of $577.
Total Amount is formed as General ($577) + Research ($0) + Ownership ($0) = $577.
Last reported payment date: 2024-11-11 • Largest payer in this snapshot: Integra LifeSciences Corporation ($321).
Total Amount
$577
General + Research + Ownership
Payments
7
Total payment records
General Amount
$577
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-11
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2006-08-23
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 |
|---|---|---|---|---|
| I20060823000209 | I | General Surgery | MI | 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 |
|---|---|---|---|---|
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 124 | 32 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 69 | 45 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 34 | 34 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 34 | 29 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 33 | 33 | $0 |
Insurance plans in this area (ZIP 48235)
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