JOHN W HAMERSMA (M.D.) – Family Medicine Physician, NPI 1033108329
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,418 FAMILY PRACTICE in MI
Loading map...
Provider Addresses for JOHN W HAMERSMA (M.D.)
Health Drive Southwest, Wyoming, Kent County, Michigan, 49518, United States
STE 200
WYOMING, MI 49519
Phone: (616) 459-3158
Fax: (616) 819-2222
Type: Location
1900 WEALTHY ST SE STE 150
GRAND RAPIDS, MI 495062969
Phone: (616) 459-3158
Fax: (616) 988-0071
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $189.
Total Amount is formed as General ($189) + Research ($0) + Ownership ($0) = $189.
Last reported payment date: 2024-09-17 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($133).
Total Amount
$189
General + Research + Ownership
Payments
7
Total payment records
General Amount
$189
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GlaxoSmithKline, LLC. | $133 |
| Novo Nordisk Inc | $36 |
| AstraZeneca Pharmaceuticals LP | $21 |
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: 2004-05-13
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 |
|---|---|---|---|---|
| I20040513001013 | I | Family Practice | 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 | 209 | 103 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 159 | 84 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 92 | 92 | $0 |
| 80053 | Blood test, comprehensive group of blood chemicals | 87 | 64 | $0 |
| 80061 | Blood test, lipids (cholesterol and triglycerides) | 70 | 57 | $0 |
Insurance plans in this area (ZIP 49519)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | MI | |
| Sports Medicine | MI | |
| Sports Medicine, Family Practice | MI | |
| Physician Assistant | MI | |
| Physician Assistant | IL | |
| Nurse Practitioner | MI | |
| N E U R O S U R G E R Y | IL | |
| Physician Assistant | MI | |
| Internal Medicine | MI | |
| Physician Assistant | MI |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.