DR. DENNIS ARTHUR O'BRIEN (M.D.) – Psychiatry Physician, NPI 1043250079
Psychiatry Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for DR. DENNIS ARTHUR O'BRIEN (M.D.)
910 N Hairston Rd
Stone Mountain, GA 300832802
Phone: (404) 377-5556
Fax: (404) 292-9903
Type: Location
Santa Rita Jail, 5325, Broder Boulevard, Dublin, Alameda County, California, 94568, United States
DUBLIN, CA 945683309
Phone:
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 9 Open Payments records for all available years, with a total value of $273.
Total Amount is formed as General ($273) + Research ($0) + Ownership ($0) = $273.
Last reported payment date: 2024-12-05 • Largest payer in this snapshot: E.R. Squibb & Sons, L.L.C. ($122).
Total Amount
$273
General + Research + Ownership
Payments
9
Total payment records
General Amount
$273
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-05
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2020-02-06
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 |
|---|---|---|---|---|
| I20080519000491 | I | Psychiatry | GA | TBD |
| I20200206002195 | 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 30083)
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Group practice members
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