DR. LOURIN N CHAHIN (MD) – Internal Medicine Physician, NPI 1902816333
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
7,218 INTERNAL MEDICINE in MI
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Provider Addresses for DR. LOURIN N CHAHIN (MD)
46857, Garfield Road, Macomb Township, Macomb County, Michigan, 48044, United States
MACOMB, MI 480445225
Phone: (586) 532-8500
Fax: (586) 532-1515
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 28 Open Payments records for all available years, with a total value of $675.
Total Amount is formed as General ($675) + Research ($0) + Ownership ($0) = $675.
Last reported payment date: 2024-12-04 • Largest payer in this snapshot: Amgen Inc. ($184).
Total Amount
$675
General + Research + Ownership
Payments
28
Total payment records
General Amount
$675
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-04
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Amgen Inc. | $184 |
| Lilly USA, LLC | $58 |
| Novo Nordisk Inc | $55 |
| Astellas Pharma US Inc | $54 |
| Dexcom, 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: 2006-10-04
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 |
|---|---|---|---|---|
| I20061004000021 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 996 | 258 | $0 |
| 99238 | Hospital discharge day management, 30 minutes or less | 271 | 223 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 216 | 181 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 202 | 175 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 113 | 80 | $0 |
Insurance plans in this area (ZIP 48044)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physical Therapist In Private Practice | WV | |
| Occupational Therapist In Private Practice | PA | |
| Occupational Therapist In Private Practice | DC | |
| Internal Medicine | MI | |
| Anesthesiology, Interventional Pain Management | MI | |
| Occupational Therapist In Private Practice | WV | |
| Family Practice | MI | |
| Family Practice | MI | |
| Physical Therapist In Private Practice | MO | |
| Occupational Therapist In Private Practice | MD |
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