DR. JOHN D. MESAROS (MD) – Psychiatry Physician, NPI 1669587580
Psychiatry Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,134 PSYCHIATRY in CA
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Provider Addresses for DR. JOHN D. MESAROS (MD)
2006, Dwight Way, LeConte, Berkeley, Alameda County, California, 95704, United States
#101
BERKELEY, CA 947042633
Phone: (925) 448-2958
Type: Location
225, Coggins Drive, Pleasant Valley, Pleasant Hill, Contra Costa County, California, 94523, United States
APT 252
PLEASANT HILL, CA 945234402
Phone: (925) 448-2958
Type: Mailing
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 $17.
Total Amount is formed as General ($17) + Research ($0) + Ownership ($0) = $17.
Last reported payment date: 2023-01-23 • Largest payer in this snapshot: VYAIRE MEDICAL, INC. ($17).
Total Amount
$17
General + Research + Ownership
Payments
1
Total payment records
General Amount
$17
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-01-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| VYAIRE MEDICAL, INC. | $17 |
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: 2015-01-21
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20041001001089 | I | Psychiatry | MI | TBD |
| I20150121002468 | I | Psychiatry | CA | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 94704)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Mental Health Counselor | MI | |
| Clinical Social Worker | MI | |
| P S Y C H I A T R Y | MI | |
| P S Y C H I A T R Y | MI | |
| Clinical Social Worker | MI | |
| Clinical Social Worker | MI | |
| - | MI | |
| Clinical Social Worker | MI | |
| Mental Health Counselor | MI | |
| Clinical Social Worker | MI |
Reviews
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