DR. PARTHA S NANDI (MD) – Gastroenterology Physician, NPI 1184605206
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
648 GASTROENTEROLOGY in MI
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Provider Addresses for DR. PARTHA S NANDI (MD)
UnaSource Health, 4600, Investment Drive, Troy, Oakland County, Michigan, 48098, United States
STE 380
TROY, MI 480986365
Phone: (248) 844-9710
Fax: (248) 844-9711
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 333 Open Payments records for all available years, with a total value of $222,534.
Total Amount is formed as General ($222,534) + Research ($0) + Ownership ($0) = $222,534.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: Phathom Pharmaceuticals, Inc. ($115,767).
Total Amount
$222,534
General + Research + Ownership
Payments
333
Total payment records
General Amount
$222,534
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Phathom Pharmaceuticals, Inc. | $115,767 |
| Lilly USA, LLC | $80,113 |
| Medtronic, Inc. | $8,345 |
| Eli Lilly and Company | $7,092 |
| ABBVIE INC. | $6,230 |
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: 2004-12-22
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 |
|---|---|---|---|---|
| I20041222000331 | I | Gastroenterology | 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 |
|---|---|---|---|---|
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 308 | 299 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 307 | 243 | $0 |
| 99442 | Telephone medical discussion with physician, 11-20 minutes | 295 | 189 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 283 | 277 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 104 | 79 | $0 |
Insurance plans in this area (ZIP 48098)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | MI | 45378 | Diagnostic examination of large bowel using an endoscope | 23 | 20 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | MI | |
| P A T H O L O G Y | MI | |
| G A S T R O E N T E R O L O G Y | IN | |
| Gastroenterology, Internal Medicine | MI | |
| G A S T R O E N T E R O L O G Y | MI | |
| Physician Assistant | MI | |
| Physician Assistant | MI | |
| Gastroenterology, Internal Medicine | MI | |
| Nurse Practitioner | MI | |
| G A S T R O E N T E R O L O G Y | MI |
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