JULIA SERGE GREER (M.D.) – Gastroenterology Physician, NPI 1437154200
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 JULIA SERGE GREER (M.D.)
Providence Parkway, Novi, Oakland County, Michigan, 48374:48393, United States
SUITE 350
NOVI, MI 483741213
Phone: (248) 662-4110
Fax: (248) 662-4120
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 4 Open Payments records for all available years, with a total value of $83.
Total Amount is formed as General ($83) + Research ($0) + Ownership ($0) = $83.
Last reported payment date: 2024-02-28 • Largest payer in this snapshot: ABBVIE INC. ($46).
Total Amount
$83
General + Research + Ownership
Payments
4
Total payment records
General Amount
$83
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-02-28
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $46 |
| Celgene Corporation | $38 |
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: 2005-04-28
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 |
|---|---|---|---|---|
| I20050428000437 | 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 |
|---|---|---|---|---|
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 117 | 113 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 116 | 78 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 116 | 115 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 110 | 95 | $0 |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 100 | 41 | $0 |
Insurance plans in this area (ZIP 48374)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | MI | |
| Physician Assistant | OH | |
| P A T H O L O G Y | IL | |
| Colorectal Surgery (Proctology) | OH | |
| P A T H O L O G Y | MI | |
| General Surgery, Colorectal Surgery (Proctology) | MI | |
| Gastroenterology, Internal Medicine | MI | |
| Physician Assistant | MI | |
| P A T H O L O G Y | MI | |
| P A T H O L O G Y | MI |
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