GARRETT CLARK MARTIN (M.D.) – Internal Medicine Physician, NPI 1083648596
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,230 HOSPITALIST in MI
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Provider Addresses for GARRETT CLARK MARTIN (M.D.)
5354, Reynolds Street, Groveland, Kensington Park, Savannah, Chatham County, Georgia, 31405, United States
SUITE 424
SAVANNAH, GA 31405
Phone: (912) 819-5999
Fax: (912) 819-5980
Type: Mailing
DCHC East Riverside Health, 13901, East Jefferson Avenue, Jefferson Chalmers, Detroit, Wayne County, Michigan, 48215, United States
DETROIT, MI 482152720
Phone: (313) 822-0900
Fax: (313) 822-0950
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 28 Open Payments records for all available years, with a total value of $1,022.
Total Amount is formed as General ($1,022) + Research ($0) + Ownership ($0) = $1,022.
Last reported payment date: 2024-11-22 • Largest payer in this snapshot: Janssen Pharmaceuticals, Inc ($374).
Total Amount
$1,022
General + Research + Ownership
Payments
28
Total payment records
General Amount
$1,022
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Janssen Pharmaceuticals, Inc | $374 |
| Novo Nordisk Inc | $257 |
| Merck Sharp & Dohme LLC | $99 |
| Novartis Pharmaceuticals Corporation | $94 |
| PFIZER INC. | $47 |
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: 2012-04-16
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20081007000738 | I | Hospitalist | MD | TBD |
| I20100414000797 | I | Internal Medicine | DC | TBD |
| I20120416000241 | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 885 | 358 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 153 | 152 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 81 | 45 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 60 | 60 | $0 |
Insurance plans in this area (ZIP 31405)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Hospitalist, Internal Medicine | IL | |
| Internal Medicine | MO | |
| H O S P I T A L I S T | MS | |
| Internal Medicine | CA | |
| H O S P I T A L I S T | SC | |
| Hospitalist, Internal Medicine | CA | |
| - | MO | |
| Internal Medicine | CA | |
| - | OR | |
| Internal Medicine, Hospitalist | IL |
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