DR. EARL MICHAEL DARBY (MD) – Gastroenterology Physician, NPI 1790743292
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. EARL MICHAEL DARBY (MD)
Frank H. Ogawa Plaza, Downtown, Oakland, Alameda County, California, United States
SUITE 450
OAKLAND, CA 946122037
Phone: (510) 444-3297
Fax: (510) 444-6421
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2005-12-06
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 |
|---|---|---|---|---|
| I20051206000561 | I | Gastroenterology | 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 94612)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | CA | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 11 | 11 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | CA | |
| Physician Assistant | CA | |
| Internal Medicine, Gastroenterology | CA | |
| Gastroenterology, Internal Medicine | CA | |
| Gastroenterology, Internal Medicine | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| Gastroenterology, Internal Medicine | CA | |
| P A T H O L O G Y | CA | |
| Physician Assistant | CA | |
| Gastroenterology, Internal Medicine | CA |
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