Dr. Stefanie M. Diaz
- Gender: Female
- Experience: 29 years
- Graduation year: 1992
- Sole propriator: No
- NPI: 1689723637
Dr. Stefanie M. Diaz M.D.
Nephrologist
She is located at 1133 Medical Drive in Tyler, TX 75701. Can help patients with the following: Gastroesophageal Reflux Disease (GERD), Hyperkalemia, Kidney Cancer, Kidney Failure, Low Blood Pressure, Osteoporosis. Her National Provider Identifier (NPI) number is 1689723637. Appointment can be made via the phone number (903) 595-5486. She is affiliated with 2 practices and 3 hospitals.
Conditions treated
Dr. Stefanie M. Diaz, being an nephrologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Stefanie M. Diaz.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Blood in Urine
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Gout
- Headache
- Heart Disease
- Hemolytic Uremic Syndrome (HUS)
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hydronephrosis
- Hypercalcemia
- Hyperkalemia
- Hyperlipidemia
- Hyperparathyroidism
- Hyponatremia
- Influenza
- Inguinal Hernia
- Kidney Cancer
- Kidney Failure
- Kidney Infection
- Kidney Stones
- Low Blood Pressure
- Low Potassium
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Polycystic Kidney Disease (PKD)
- Prescription Refill
- Rhabdomyolysis
- Urethritis
- Urinary Tract Infection (UTI)
- Vitamin D Deficiency
Procedures Performed by Dr. Stefanie M. Diaz
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Stefanie M. Diaz as in-network for the following 2026 plans.
Health plans
Ambetter from Superior HealthPlan
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 12 plans from Ambetter from Superior HealthPlan
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Complete Gold | EPO · Gold | Preferred | Accepting new patients |
| Complete Gold + Vision + Adult Dental | EPO · Gold | Preferred | Accepting new patients |
| Enhanced Diabetes Care Silver with $0 Drug Options | EPO · Silver | Preferred | Accepting new patients |
| Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental | EPO · Silver | Preferred | Accepting new patients |
| Everyday Gold | EPO · Gold | Preferred | Accepting new patients |
| Everyday Gold + Vision + Adult Dental | EPO · Gold | Preferred | Accepting new patients |
| Focused Silver | EPO · Silver | Preferred | Accepting new patients |
| Focused Silver + Vision + Adult Dental | EPO · Silver | Preferred | Accepting new patients |
| Standard Gold | EPO · Gold | Preferred | Accepting new patients |
| Standard Gold + Vision + Adult Dental | EPO · Gold | Preferred | Accepting new patients |
| Standard Silver | EPO · Silver | Preferred | Accepting new patients |
| Standard Silver + Vision + Adult Dental | EPO · Silver | Preferred | Accepting new patients |
Blue Cross and Blue Shield of Texas
Network data as of Jun 7, 2026, as reported by the insurer.
Show all 19 plans from Blue Cross and Blue Shield of Texas
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Advantage Bronze HMO℠ 204 (27 plan variants) | HMO · Expanded Bronze | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Bronze HMO℠ 301 (14 plan variants) | HMO · Bronze | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Bronze HMO℠ Standard (27 plan variants) | HMO · Expanded Bronze | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Gold HMO℠ 206 (27 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Gold HMO℠ 603 (14 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Gold HMO℠ Standard (27 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Bronze℠ 303 (27 plan variants) | POS · Expanded Bronze | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Bronze℠ 305 (27 plan variants) | POS · Bronze | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Bronze℠ Standard (27 plan variants) | POS · Expanded Bronze | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Gold℠ 203 (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Gold℠ 803 (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Gold℠ Standard (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Silver℠ 202 (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Silver℠ 605 (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Plus Silver℠ Standard (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Security HMO℠ 200 (27 plan variants) | HMO · Catastrophic | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Silver HMO℠ 205 (27 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Silver HMO℠ 801 (14 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients at some locations |
| Blue Advantage Silver HMO℠ Standard (27 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients at some locations |
CHRISTUS Health Plan
Network data as of Jan 1, 1900, as reported by the insurer.
Show all 18 plans from CHRISTUS Health Plan
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| CHRISTUS Bronze (2 Free PCP Visits, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Bronze + Dental & Vision (2 Free PCP Visits, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Bronze Essential (2 Free PCP Visits, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Bronze Essential + Dental & Vision (2 Free PCP Visits, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Catastrophic (3 Free PCP visits) | HMO · Catastrophic | Preferred | Accepting new patients |
| CHRISTUS Gold + Dental & Vision + Fitness ($0 Deductible, $5 PCP, $0 Generic Rx, $0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold + Fitness ($0 Deductible, $5 PCP, $0 Generic Rx, $0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold Essential ($0 Rx Deductible, $5 PCP, $0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Gold Essential + Dental & Vision ($0 Rx Deductible, $5 PCP, $0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Silver Essential 70 ($5 PCP, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Silver Essential 70 + Dental & Vision ($5 PCP, $0 Preferred Generic Rx, $0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Standard Expanded Bronze ($0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Standard Gold ($0 Virtual Urgent Care) | HMO · Gold | Preferred | Accepting new patients |
| CHRISTUS Standard Silver 70 ($0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Value Bronze (3 Free PCP Visits, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Value Bronze + Dental & Vision (3 Free PCP Visits, $0 Virtual Urgent Care) | HMO · Expanded Bronze | Preferred | Accepting new patients |
| CHRISTUS Value Silver 70 ($0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
| CHRISTUS Value Silver 70 + Dental & Vision ($0 Virtual Urgent Care) | HMO · Silver | Preferred | Accepting new patients |
UnitedHealthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 14 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Essential ($0 Virtual Urgent Care) | HMO · Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard+ (Dental + Vision) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Gold Advantage ($0 Virtual Urgent Care, $8 Tier 2 Rx) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Advantage+ ($0 Virtual Urgent Care, $8 Tier 2 Rx, Dental + Vision) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx, Dental + Vision) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Standard | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Silver Advantage ($0 Virtual Urgent Care, $5 Tier 2 Rx) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Advantage+ ($0 Virtual Urgent Care, $5 Tier 2 Rx, Dental + Vision) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Standard | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value ($0 Virtual Urgent Care) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value+ ($0 Virtual Urgent Care, Dental + Vision) | HMO · Silver | Non Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Stefanie M. Diaz is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Stefanie M. Diaz is enrolled to bill Medicare as a Practitioner - Nephrology (also registered under: Practitioner - Internal Medicine) .
Bills through: Tyler Nephrology Associates Pa
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Otsuka Pharmaceutical | $149 |
| Amgen | $37 |
| OPKO Pharmaceuticals | $27 |
Other
| Food and Beverage | $283 |
Studies
Graduated in 1992Additional Specialities
- Internist
Affiliated hospitals
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- Gender: Male
- Address: 1133 Medical Drive Tyler, 75701, TX
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- Address: 1133 Medical Drive Tyler, 75701, TX
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- Address: 1133 Medical Drive Tyler, 75701, TX
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- Address: 1133 Medical Drive Tyler, 75701, TX
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- Gender: Male
- Address: 1133 Medical Drive Tyler, 75701, TX
- Gender: Male
- Address: 1133 Medical Drive Tyler, 75701, TX
- Gender: Male
- Address: 1133 Medical Drive Tyler, 75701, TX
- Gender: Male
- Address: 1133 Medical Drive Tyler, 75701, TX
- Gender: Male
- Address: 1133 Medical Drive Tyler, 75701, TX
Questions & Answers
Does Dr. Stefanie M. Diaz have affiliation with practices?
Dr. Stefanie M. Diaz is affiliated with Titus Regional Medical Center. For the full list of practices see this list.
Does Dr. Stefanie M. Diaz accept patients with Ambetter from Superior HealthPlan?
Yes, Dr. Stefanie M. Diaz is listed in-network for Ambetter from Superior HealthPlan through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Where can you meet with Dr. Stefanie M. Diaz?
Dr. Stefanie M. Diaz's office is located at 1133 Medical Drive in Tyler, TX 75701.
Has Dr. Stefanie M. Diaz affiliation with hospitals?
Dr. Stefanie M. Diaz is affiliated with CHRISTUS MOTHER FRANCES HOSPITAL SULPHUR SPRINGS. For the full list of hospitals see this list.
What conditions does Dr. Stefanie M. Diaz treat?
Dr. Stefanie M. Diaz provides treatment for Gastroesophageal Reflux Disease (GERD), Hyperkalemia, Kidney Cancer, Kidney Failure, Low Blood Pressure, Osteoporosis. For the full list see this list.