JOHN A BAKER (MD) – Psychiatry Physician, NPI 1548225519
Psychiatry Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,213 PSYCHIATRY in MI
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Provider Addresses for JOHN A BAKER (MD)
PO BOX 352
MASON, MI 488540352
Phone: (517) 676-9788
Fax: (517) 676-3438
Type: Mailing
812, East Jolly Road, Lansing, Ingham County, Michigan, 48910, United States
SUITE 210
LANSING, MI 489106818
Phone: (517) 346-8306
Fax: (517) 346-8291
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 35 Open Payments records for all available years, with a total value of $684.
Total Amount is formed as General ($684) + Research ($0) + Ownership ($0) = $684.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: Otsuka America Pharmaceutical, Inc. ($182).
Total Amount
$684
General + Research + Ownership
Payments
35
Total payment records
General Amount
$684
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Otsuka America Pharmaceutical, Inc. | $182 |
| Indivior Inc. | $88 |
| ABBVIE INC. | $75 |
| Axsome Therapeutics, Inc. | $66 |
| Alkermes, Inc. | $58 |
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: 2004-03-31
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 |
|---|---|---|---|---|
| I20040331000126 | I | Psychiatry | 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 |
|---|---|---|---|---|
| 90792 | Psychiatric diagnostic evaluation with medical services | 117 | 114 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 92 | 52 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 56 | 33 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 31 | 18 | $0 |
Insurance plans in this area (ZIP 48854)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MI | |
| - | MI | |
| Family Practice | MI | |
| - | MI | |
| P A T H O L O G Y | IL | |
| Nurse Practitioner | MI | |
| Vascular Surgery, General Surgery | MI | |
| Nurse Practitioner | MI | |
| Internal Medicine | MI | |
| Family Practice | MI |
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