DR. FLAVIO HUMBERTO ALVAREZ (MD) – Nephrology Physician, NPI 1932175601
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,297 HOSPITALIST in TX
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Provider Addresses for DR. FLAVIO HUMBERTO ALVAREZ (MD)
US Highway 281 North, Stone Oak, San Antonio, Bexar County, Texas, 78259, United States
STE 300
SAN ANTONIO, TX 782322327
Phone: (210) 614-1231
Fax: (210) 616-0704
Type: Mailing
11481, Toepperwein Road, Live Oak, Bexar County, Texas, 78233, United States
STE 1202
LIVE OAK, TX 78233
Phone: (210) 655-8470
Fax: (210) 967-0276
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 164 Open Payments records for all available years, with a total value of $3,712.
Total Amount is formed as General ($3,712) + Research ($0) + Ownership ($0) = $3,712.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($815).
Total Amount
$3,712
General + Research + Ownership
Payments
164
Total payment records
General Amount
$3,712
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $815 |
| Amgen Inc. | $403 |
| Aurinia Pharma U.S., Inc. | $303 |
| Bayer Healthcare Pharmaceuticals Inc. | $303 |
| Ardelyx, Inc. | $189 |
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: 2010-01-08
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 |
|---|---|---|---|---|
| I20100108000111 | 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 |
|---|---|---|---|---|
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 392 | 74 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 389 | 56 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 329 | 194 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 262 | 80 | $0 |
| 99439 | Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 155 | 58 | $0 |
Insurance plans in this area (ZIP 78232)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| N E P H R O L O G Y | TX | |
| N E P H R O L O G Y | TX | |
| N E P H R O L O G Y | TX | |
| N E P H R O L O G Y | TX | |
| N E P H R O L O G Y | TX | |
| Hospitalist, Internal Medicine | TX | |
| N E P H R O L O G Y | TX | |
| N E P H R O L O G Y | TX | |
| Nephrology, Internal Medicine | TX | |
| Internal Medicine | TX |
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