DR. JOHN C VASSALLO (M.D.) – Internal Medicine Physician, NPI 1275590119
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
7,218 INTERNAL MEDICINE in MI
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Provider Addresses for DR. JOHN C VASSALLO (M.D.)
Howell Pediatrics and Teen Center, 3399, East Grand River Avenue, Howell, Livingston County, Michigan, 48843, United States
SUITE 204
HOWELL, MI 488437555
Phone: (517) 540-0709
Fax: (517) 540-1775
Type: Location
1225 W GRAND RIVER AVE STE 300
HOWELL, MI 488433970
Phone: (517) 548-0010
Fax: (517) 548-5326
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 120 Open Payments records for all available years, with a total value of $2,438.
Total Amount is formed as General ($2,438) + Research ($0) + Ownership ($0) = $2,438.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($640).
Total Amount
$2,438
General + Research + Ownership
Payments
120
Total payment records
General Amount
$2,438
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $640 |
| Novo Nordisk Inc | $84 |
| IDORSIA PHARMACEUTICALS US INC | $83 |
| ABBVIE INC. | $79 |
| Alkermes, Inc. | $78 |
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: 2005-07-14
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 |
|---|---|---|---|---|
| I20050714000875 | I | Internal Medicine | 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 | 446 | 225 | $0 |
| 99306 | Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 259 | 221 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 216 | 144 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 167 | 167 | $0 |
| 99308 | Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 166 | 88 | $0 |
Insurance plans in this area (ZIP 48843)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | MI | 82270 | Stool analysis for blood to screen for colon tumors | 14 | 14 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | MI | |
| Physician Assistant | MI | |
| Physician Assistant | MI |
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