WINNIE NHAN (DO) – Endocrinology, Diabetes & Metabolism Physician, NPI 1245681709
Endocrinology, Diabetes & Metabolism Physician
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NPPES metrics only — not quality of care.
300 ENDOCRINOLOGY in MI
Provider Addresses for WINNIE NHAN (DO)
PO BOX 713260
CHICAGO, IL 606771260
Phone: (630) 469-9200
Type: Mailing
4000 Ave Maria Dr
LOBBY C SUITE 1300
ANN ARBOR, MI 48105
Phone: (734) 930-4450
Type: Location
Domino's Farms Office Park, 24, Frank Lloyd Wright Drive, Domino Farms, Ann Arbor Charter Township, Washtenaw County, Michigan, 48105, United States
PO BOX 482 LOBBY G SUITE 1500
ANN ARBOR, MI 48106
Phone:
Type: Mailing
Christ the King Catholic Church, 4000, Ave Maria Drive, Domino Farms, Ann Arbor Charter Township, Washtenaw County, Michigan, 48105, United States
LOBBY C SUITE 1300
ANN ARBOR, MI 48105
Phone: (734) 930-4450
Type: Location
1860 PAYSPHERE CIR
CHICAGO, IL 606740018
Phone: (630) 469-9200
Type: Mailing
430 PENNSYLVANIA AVE STE 310
GLEN ELLYN, IL 601374464
Phone: (630) 789-4910
Fax: (630) 789-4911
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 68 Open Payments records for all available years, with a total value of $1,078.
Total Amount is formed as General ($1,078) + Research ($0) + Ownership ($0) = $1,078.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: Lilly USA, LLC ($297).
Total Amount
$1,078
General + Research + Ownership
Payments
68
Total payment records
General Amount
$1,078
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Lilly USA, LLC | $297 |
| Dexcom, Inc. | $244 |
| Abbott Laboratories | $82 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $71 |
| Xeris Pharmaceuticals, Inc. | $40 |
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: 2021-08-06
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 |
|---|---|---|---|---|
| I20210806002927 | I | Endocrinology | IL | 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 |
|---|---|---|---|---|
| J0897 | Injection, denosumab, 1 mg | 2,460 | 28 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 549 | 255 | $0 |
| 83036 | Hemoglobin a1c level | 386 | 181 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 250 | 169 | $0 |
| 84443 | Blood test, thyroid stimulating hormone (tsh) | 181 | 125 | $0 |
Insurance plans in this area (ZIP 60677)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| E N D O C R I N O L O G Y | IL | |
| Physician Assistant | IL | |
| Internal Medicine | IL | |
| Nurse Practitioner | IL | |
| - | IL | |
| - | IL | |
| - | IL | |
| - | IL | |
| - | IL | |
| Allergy/Immunology, Pediatric Medicine | IL |
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