DR. MICHAEL JOSEPH HARRINGTON (MD) – Internal Medicine Physician, NPI 1124186945
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
758 RHEUMATOLOGY in CA
Provider Addresses for DR. MICHAEL JOSEPH HARRINGTON (MD)
1561 3RD ST STE G
NAPA, CA 945592861
Phone: (707) 259-2000
Fax: (707) 259-0181
Type: Mailing
3443 VILLA LN STE 9
NAPA, CA 945586417
Phone: (707) 253-8901
Fax: (707) 253-1558
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 11 Open Payments records for all available years, with a total value of $886.
Total Amount is formed as General ($886) + Research ($0) + Ownership ($0) = $886.
Last reported payment date: 2024-09-19 • Largest payer in this snapshot: ABBVIE INC. ($357).
Total Amount
$886
General + Research + Ownership
Payments
11
Total payment records
General Amount
$886
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $357 |
| Amgen Inc. | $152 |
| GlaxoSmithKline, LLC. | $120 |
| Aurinia Pharma U.S., Inc. | $79 |
| Janssen Scientific Affairs, LLC | $69 |
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: 2010-03-22
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 |
|---|---|---|---|---|
| I20100322000157 | I | Rheumatology | 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 94559)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| C H I R O P R A C T I C | CA | |
| - | CA | |
| C H I R O P R A C T I C | CA | |
| Clinical Psychologist | CA | |
| P S Y C H I A T R Y | TX | |
| Clinical Social Worker | CA | |
| Nurse Practitioner | CA | |
| Family Practice | CA | |
| Marriage And Family Therapist | CA | |
| General Practice | CA |
Reviews
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