DR. GEOFFREY ALLAN BLOCK (MD) – Nephrology Physician, NPI 1861474140
Nephrology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
186 NEPHROLOGY in CO
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Provider Addresses for DR. GEOFFREY ALLAN BLOCK (MD)
985, Beech Street, Golden, Jefferson County, Colorado, 80228, United States
GOLDEN, CO 804014107
Phone: (303) 358-4764
Type: Mailing
9777 S YOSEMITE ST STE 110
LONE TREE, CO 801243115
Phone: (720) 696-0852
Fax: (720) 696-0892
Type: Mailing
1444 S Potomac St Ste 215
Aurora, CO 800124533
Phone: (720) 500-3439
Fax: (855) 712-9183
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 32 Open Payments records for all available years, with a total value of $554,562.
Total Amount is formed as General ($554,562) + Research ($0) + Ownership ($0) = $554,562.
Last reported payment date: 2024-10-23 • Largest payer in this snapshot: Ardelyx, Inc. ($437,522).
Total Amount
$554,562
General + Research + Ownership
Payments
32
Total payment records
General Amount
$554,562
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Ardelyx, Inc. | $437,522 |
| Outset Medical Inc | $116,750 |
| AKEBIA THERAPEUTICS INC | $125 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $125 |
| Amgen Inc. | $40 |
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: 2010-11-23
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 |
|---|---|---|---|---|
| I20101123000038 | I | Nephrology | CO | 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 80401)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| N E P H R O L O G Y | CO | |
| Nurse Practitioner | MO | |
| N E P H R O L O G Y | CO | |
| Nephrology, Internal Medicine, Hospitalist | CO | |
| Physician Assistant | CO | |
| Nephrology, Internal Medicine | CO | |
| Nurse Practitioner | KS | |
| Nurse Practitioner | GA | |
| Nurse Practitioner | KS | |
| Physician Assistant | CO |
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