GUSTAVO ENRIQUE AYALA (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1992709356
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,394 PATHOLOGY in TX
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Provider Addresses for GUSTAVO ENRIQUE AYALA (M.D.)
PO BOX 4677
HOUSTON, TX 772104677
Phone:
Type: Mailing
Conroe Regional Medical Center, 504, Medical Center Boulevard, Conroe, Montgomery County, Texas, 77304, United States
CONROE, TX 773042808
Phone: (713) 481-3544
Fax: (713) 432-0221
Type: Location
6431 FANNIN STREET
MSB 2.136
HOUSTON, TX 770301501
Phone: (713) 500-5301
Fax: (713) 500-0695
Type: Mailing
6411 FANNIN STREET
HOUSTON, TX 770301501
Phone: (713) 704-4000
Fax: (713) 704-2658
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $19.
Total Amount is formed as General ($19) + Research ($0) + Ownership ($0) = $19.
Last reported payment date: 2023-06-07 • Largest payer in this snapshot: Roche Diagnostics Corporation ($19).
Total Amount
$19
General + Research + Ownership
Payments
1
Total payment records
General Amount
$19
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-06-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Roche Diagnostics Corporation | $19 |
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: 2005-03-07
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 |
|---|---|---|---|---|
| I20050307000439 | I | Pathology | 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 |
|---|---|---|---|---|
| G0416 | Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method | 91 | 90 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 72 | 12 | $0 |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 68 | 49 | $0 |
| 88344 | Special stained specimen slides to examine tissue, each multiplex procedure | 67 | 34 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 62 | 41 | $0 |
Insurance plans in this area (ZIP 77210)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PATHOLOGY | TX | 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 25 | 21 |
| PATHOLOGY | TX | 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 30 | 20 |
| PATHOLOGY | TX | 88342 | Tissue or cell analysis by immunologic technique | 35 | 27 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | TX | |
| P A T H O L O G Y | TX | |
| - | TX | |
| - | TX | |
| P A T H O L O G Y | TX | |
| P A T H O L O G Y | TX | |
| P A T H O L O G Y | TX | |
| P A T H O L O G Y | LA |
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