DR. STEPHEN ALEXANDER HARDING (M.D.) – Emergency Medicine Physician, NPI 1205239332
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,051 EMERGENCY MEDICINE in TX
Provider Addresses for DR. STEPHEN ALEXANDER HARDING (M.D.)
6621 FANNIN ST STE A210
HOUSTON, TX 770302358
Phone: (832) 824-1000
Type: Mailing
6621 FANNIN ST
HOUSTON, TX 770302358
Phone: (832) 824-1000
Type: Location
462 1ST AVE
RM 345A
NEW YORK, NY 10016
Phone: (713) 818-6043
Type: Mailing
455 1ST AVE
NEW YORK, NY 100169102
Phone: (713) 818-6043
Type: Location
455 1st Ave
New York, NY 100169102
Phone: (713) 818-6043
Type: Location
7200 Cambridge St
Houston, TX 770304202
Phone: (713) 798-2400
Type: Location
6720 Bertner Ave
Houston, TX 770302604
Phone: (832) 355-2666
Type: Location
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: 2018-08-15
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 |
|---|---|---|---|---|
| I20180815000588 | I | Emergency Medicine | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 77030)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | TX | |
| Gastroenterology, Internal Medicine | TX | |
| Internal Medicine, Hospitalist | IN | |
| Hospitalist, Internal Medicine | TX | |
| Diagnostic Radiology | VA | |
| - | TX | |
| Family Practice | TX | |
| Internal Medicine, Pediatric Medicine | TX | |
| Psychiatry, Geriatric Psychiatry | TX | |
| - | TX |
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