MICHAEL ARRIAGA (MD) – Internal Medicine Physician, NPI 1407292352
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,290 INTERNAL MEDICINE in TX
Provider Addresses for MICHAEL ARRIAGA (MD)
921 Gessner Rd
Houston, TX 770242501
Phone: (281) 644-8111
Type: Location
4101 Greenbriar St
Suite 122G
Houston, TX 770985294
Phone: (281) 252-9993
Type: Location
4101 GREENBRIAR ST
SUITE 122G
HOUSTON, TX 770985294
Phone: (281) 252-9993
Type: Mailing
PO BOX 58406
WEBSTER, TX 775988406
Phone: (281) 724-7341
Fax: (281) 724-1861
Type: Mailing
500 N KOBAYASHI STE A
WEBSTER, TX 775984722
Phone: (281) 724-7341
Fax: (281) 724-1861
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: 2016-09-27
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 |
|---|---|---|---|---|
| I20160927002801 | I | Internal 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 293 | 286 | $0 |
| 99497 | Advance care planning, first 30 minutes | 246 | 237 | $0 |
| 99291 | Critical care, first 30-74 minutes | 79 | 78 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 40 | 40 | $0 |
Insurance plans in this area (ZIP 77024)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Hospitalist | WI | |
| Hospitalist, Internal Medicine | NY | |
| Internal Medicine | TX | |
| Internal Medicine, Cardiovascular Disease (Cardiology) | AL | |
| Hospitalist, Internal Medicine | TX | |
| Internal Medicine | TX | |
| Internal Medicine | TX | |
| Internal Medicine, Pediatric Medicine | TX | |
| Hospitalist, Internal Medicine | TX | |
| Internal Medicine | TX |
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