Dr. Carlos Zem
- Gender: Male
- Experience: 19 years
- Graduation year: 2002
- Sole propriator: No
- NPI: 1437237914
Dr. Carlos Zem MD
Nephrologist
He is located at 1123 North Main Avenue Suite 120 in San Antonio, TX 78212. Can help patients with the following: Atherosclerosis, Bladder Control, Common Cold, High Blood Pressure, Hyperlipidemia, Polycystic Kidney Disease (PKD). His National Provider Identifier (NPI) number is 1437237914. Appointment can be made via the phone number (210) 226-2001. He is affiliated with 4 practices and 4 hospitals.
Conditions treated
Dr. Carlos H. Zem, 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. Carlos Zem.
- 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. Carlos Zem
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Carlos Zem 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 |
Baylor Scott and White Health Plan
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 10 plans from Baylor Scott and White Health Plan
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| BSW Diabetes Care Gold HMO 014 | HMO · Gold | Bswpremierhmo | Accepting new patients |
| BSW Elite Gold HMO 001 (CMS Standardized Plan with $0 Pediatric PCP copay) | HMO · Gold | Bswpremierhmo | Accepting new patients |
| BSW Elite Gold HMO 004 | HMO · Gold | Bswpremierhmo | Accepting new patients |
| BSW Elite Gold HMO 012 | HMO · Gold | Bswpremierhmo | Accepting new patients |
| BSW Prime Silver HMO 003 (CMS Standardized Plan with $0 Pediatric PCP copay) | HMO · Silver | Bswpremierhmo | Accepting new patients |
| BSW Prime Silver HMO 008 | HMO · Silver | Bswpremierhmo | Accepting new patients |
| BSW Prime Silver HMO 005 | HMO · Silver | Bswpremierhmo | Accepting new patients |
| BSW Savers Bronze HMO H S A 006 | HMO · Expanded Bronze | Bswpremierhmo | Accepting new patients |
| BSW Savers Bronze HMO H S A 007 (CMS Standardized Plan with $0 Pediatric PCP copay) | HMO · Expanded Bronze | Bswpremierhmo | Accepting new patients |
| BSW Savers Bronze HMO H S A 009 | HMO · Expanded Bronze | Bswpremierhmo | Accepting new patients |
Blue Cross and Blue Shield of Texas
Network data as of Jun 7, 2026, as reported by the insurer.
Show all 25 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 |
| Blue Advantage Bronze HMO℠ 301 (14 plan variants) | HMO · Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Bronze HMO℠ Standard (27 plan variants) | HMO · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ 206 (27 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ 603 (14 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Gold HMO℠ Standard (27 plan variants) | HMO · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ 303 (27 plan variants) | POS · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ 305 (27 plan variants) | POS · Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Bronze℠ Standard (27 plan variants) | POS · Expanded Bronze | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ 203 (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ 803 (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Gold℠ Standard (27 plan variants) | POS · Gold | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ 202 (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ 605 (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Plus Silver℠ Standard (27 plan variants) | POS · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Security HMO℠ 200 (27 plan variants) | HMO · Catastrophic | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ 205 (27 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ 801 (14 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
| Blue Advantage Silver HMO℠ Standard (27 plan variants) | HMO · Silver | Blue Advantage HMO | Accepting new patients |
| MyBlue Health Bronze℠ 402 (13 plan variants) | HMO · Expanded Bronze | Myblue Health | Accepting new patients |
| MyBlue Health Bronze℠ Standard (11 plan variants) | HMO · Expanded Bronze | Myblue Health | Accepting new patients |
| MyBlue Health Gold℠ 403 (13 plan variants) | HMO · Gold | Myblue Health | Accepting new patients |
| MyBlue Health Gold℠ Standard (11 plan variants) | HMO · Gold | Myblue Health | Accepting new patients |
| MyBlue Health Silver℠ 405 (13 plan variants) | HMO · Silver | Myblue Health | Accepting new patients |
| MyBlue Health Silver℠ Standard (11 plan variants) | HMO · Silver | Myblue Health | Accepting new patients |
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 |
Imperial Insurance Companies, Inc.
Network data as of Sep 16, 2025, as reported by the insurer.
Show all 7 plans from Imperial Insurance Companies, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Imperial Preferred Bronze | HMO · Bronze | Preferred | Accepting new patients |
| Imperial Preferred Gold | HMO · Gold | Preferred | Accepting new patients |
| Imperial Preferred Gold Zero | HMO · Gold | Preferred | Accepting new patients |
| Imperial Preferred Silver | HMO · Silver | Preferred | Accepting new patients |
| Imperial Standard Bronze | HMO · Expanded Bronze | Standard | Accepting new patients |
| Imperial Standard Gold | HMO · Gold | Standard | Accepting new patients |
| Imperial Standard Silver | HMO · Silver | Standard | Accepting new patients |
Oscar Insurance Company
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 11 plans from Oscar Insurance Company
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Gold Classic Guided Care (8 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Gold Classic Standard Guided Care (8 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Gold Simple Diabetes Guided Care (8 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Gold Simple Guided Care (8 plan variants) | HMO · Gold | Preferred | Accepting new patients |
| Silver Classic Standard Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Breathe Easy with Enhanced COPD Benefits Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Chronic Care CKM Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver Guided Care (8 plan variants) | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Women's Health with Menopause Benefits Guided Care (8 plan variants) | 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 |
UnitedHealthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 11 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Sanitas Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Sanitas Bronze Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, Dental + Vision) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Sanitas Bronze Standard | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Sanitas Gold Advantage ($0 Virtual Urgent Care, $8 Tier 2 Rx) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Sanitas Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Sanitas 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 Sanitas Gold Standard | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Sanitas Silver Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Sanitas Silver Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, Dental + Vision) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Sanitas Silver Standard | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Sanitas Silver Value ($0 Virtual Urgent Care) | 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. Carlos Zem 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. Carlos Zem is enrolled to bill Medicare as a Practitioner - Nephrology .
Bills through: Renal Associates, P.a.
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.
Studies
Graduated in 2002Additional Specialities
- Internist
Affiliated practices
Affiliated hospitals
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- Address: Suite 120 1123 North Main Avenue San Antonio, 78212, TX
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- Address: Suite 120 1123 North Main Avenue San Antonio, 78212, TX
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Questions & Answers
Does Dr. Carlos H. Zem have affiliation with practices?
Dr. Carlos H. Zem is affiliated with Baptist Health System Cardiology Group. For the full list of practices see this list.
Where can you meet with Dr. Carlos H. Zem?
Dr. Carlos H. Zem's office is located at 1123 North Main Avenue Suite 120 in San Antonio, TX 78212.
Has Dr. Carlos H. Zem affiliation with hospitals?
Dr. Carlos H. Zem is affiliated with METHODIST HOSPITAL. For the full list of hospitals see this list.
Does Dr. Carlos H. Zem accept patients with Baylor Scott and White Health Plan?
Yes, Dr. Carlos H. Zem is listed in-network for Baylor Scott and White Health Plan through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
What conditions does Dr. Carlos H. Zem treat?
Dr. Carlos H. Zem provides treatment for Atherosclerosis, Bladder Control, Common Cold, High Blood Pressure, Hyperlipidemia, Polycystic Kidney Disease (PKD). For the full list see this list.