STEPHEN JOHN CHALMERS (M.D.) – Nephrology Physician, NPI 1134166143
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,168 NEPHROLOGY in TX
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Provider Addresses for STEPHEN JOHN CHALMERS (M.D.)
1132, South Bowen Road, Arlington, Tarrant County, Texas, 76013, United States
ARLINGTON, TX 76013
Phone: (817) 265-9700
Fax: (817) 277-4164
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)
CMS reports 53 Open Payments records for all available years, with a total value of $1,224.
Total Amount is formed as General ($1,224) + Research ($0) + Ownership ($0) = $1,224.
Last reported payment date: 2024-12-05 • Largest payer in this snapshot: Amgen Inc. ($213).
Total Amount
$1,224
General + Research + Ownership
Payments
53
Total payment records
General Amount
$1,224
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: 2008-10-14
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 |
|---|---|---|---|---|
| I20081014000501 | I | Nephrology | TX | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 549 | 149 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 288 | 44 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 129 | 77 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 112 | 43 | $0 |
| 90961 | Dialysis services, 2-3 physician visits per month (20 years or older) | 62 | 27 | $0 |
Insurance plans in this area (ZIP 76013)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEPHROLOGY | TX | 90966 | Home dialysis services per month, patient 20 years of age or older | 98 | 11 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | TX | |
| Nurse Practitioner | TX | |
| N E P H R O L O G Y | TX | |
| - | TX |
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