TANNAZ GUIVATCHIAN (MD) – Gastroenterology Physician, NPI 1285897835
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 TANNAZ GUIVATCHIAN (MD)
South State Street, Ann Arbor, Washtenaw County, Michigan, 48108-1774, United States
ANN ARBOR, MI 481081633
Phone: (734) 647-5299
Type: Mailing
Northville Health Center, 39901, Traditions Drive, Northville Township, Wayne County, Michigan, 48167-3958, United States
SUITE 210
NORTHVILLE, MI 48168
Phone: (888) 229-7408
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $112.
Total Amount is formed as General ($112) + Research ($0) + Ownership ($0) = $112.
Last reported payment date: 2024-10-10 • Largest payer in this snapshot: Laborie Medical Technologies Corp. ($112).
Total Amount
$112
General + Research + Ownership
Payments
1
Total payment records
General Amount
$112
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Laborie Medical Technologies Corp. | $112 |
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: 2011-08-10
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 |
|---|---|---|---|---|
| I20110810000179 | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 53 | 50 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 23 | 23 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 22 | 22 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 18 | 18 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 18 | 18 | $0 |
Insurance plans in this area (ZIP 48108)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | FL | |
| Physical Medicine And Rehabilitation | MI | |
| A N E S T H E S I O L O G Y | MI | |
| Internal Medicine, Pediatric Medicine | IL | |
| - | MI | |
| Physician Assistant | MI |
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