Headshot of Maria Rayas, MD

Maria Rayas, MD

UT Health San Antonio
Schedule an appointment: 210-358-7551
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Specialty

  • Pediatric Endocrinology

Board Affiliation/Certification

  • American Board of Pediatric Endocrinology
  • American Board of Pediatrics

Education

  • University of Texas Health Science Center at San Antonio (2007)

Residency

  • Pediatrics, University of Texas Health Science Center (2010)

Fellowships

  • Pediatric Endocrinology, University of Texas Health Science Center (2013)

Languages

  • English
  • Spanish

Gender

  • Female

University Hospital

4502 Medical Drive
San Antonio,TX 78229

Insurance Accepted

  • 6 Degrees - Transplant
  • 90 Degree Benefits - Third Party Administrator
  • Administrative Concepts - Third Party Administrator
  • Aetna (Coventry) - Work Comp/Auto
  • Aetna Better Health - CHIP/CHIP Perinate Newborn
  • Aetna Better Health - Medicaid STAR
  • Aetna Health - Commercial (Choice POS II, Elect Choice EPO, Exchange (Silver/Gold HMO))
  • Aetna Health - Commercial (HMO, Managed Choice POS, Meritain, Open Choice PPO)
  • Aetna Health - Commercial (QPOS, SAISD, Select)
  • Aetna Health - Medicaid Dual Preferred (HMO D-SNP)
  • Aetna Health - Medicare Advantage (Eagle PPO, Freedom PPO, Premier HMO, Prime HMO, Value Plus PPO)
  • Aetna Health - Transplant ONLY
  • Allegiance - Universal Benefits Consortium
  • Allied Benefit Systems - Third Party Administrator
  • Allwell (Superior HealthPlan) - Medicare Advantage
  • Ancira Enterprises - Direct Employer
  • Benefit Administrative Systems - Third Party Administrator
  • BlueCross BlueShield (Federal Programs) - Commercial (Federal - All Products)
  • BlueCross BlueShield (Out-of-State) - Commercial (Out of State - Blue Card Program Only)
  • BlueCross BlueShield of Texas - Commercial (Blue Premier HMO, Blue Choice PPO)
  • BlueCross BlueShield of Texas - Commercial (CHIP, Blue Advantage HMO, Blue Essentials HMO)
  • BlueCross BlueShield of Texas - Commercial (ERS, TRS, State of TX Employees)
  • BlueCross BlueShield of Texas - HPN/EPO (Narrow Network)
  • BlueCross BlueShield of Texas - Medicaid (STAR, STAR Kids, STAR PLUS)
  • BlueCross BlueShield of Texas - Medicare Advantage (HMO, PPO)
  • BlueCross BlueShield of Texas - Medicare-Medicaid Dual Eligible Plans
  • BlueCross BlueShield of Texas - Traditional/Par Network
  • BlueCross BlueShield of Texas - Transplant Network
  • Care Improvement Plus - Medicare Advantage (Special Needs Plan)
  • Century Healthcare - Third Party Administrator
  • CHAMPVA - Governmental
  • Cigna - Employer Specific Network (United Benefits Consortium)
  • Cigna - Employer Specific Network (USAA Employees & Dependents Only)
  • Cigna Health Spring - Medicare Advantage (WellMed)
  • Community First Health Plans - CHIP/CHIP Perinate Newborn
  • Community First Health Plans - Commercial (HMO, Exchange)
  • Community First Health Plans - Medicaid (STAR, STAR Kids, STAR PLUS)
  • Community First Health Plans - Medicare Advantage (HMO)
  • Community First Health Plans - University Family Care Plan
  • Curative - Commercial (All Products)
  • Driscoll Health Plan - Medicaid (All products)
  • EBSO Benefits - Third Party Administrator
  • El Paso Health - CHIP
  • El Paso Health - Medicaid STAR
  • Employers Health Network - Commercial (PPO)
  • Entrust - Third Party Administrator
  • First Health - Commercial (All Products)
  • FirstCare (Part of Baylor Scott & White) - Medicaid-STAR
  • Galaxy Health Network - Commercial (All products)
  • Gilsbar - Third Party Administrator
  • Group and Pension Administrators - Third Party Administrator
  • HealthSmart (Accel) - Commercial (All products)
  • HMA LLC - Third Party Administrator
  • Humana - Medicare Advantage (HMO, PPO, WellMed)
  • Humana - Transplant Network
  • Humana Military - TRICARE East Region
  • Imagine 360 - Third Party Administrator
  • Imperial Health - Commercial (Exchange)
  • Imperial Health Plan - Medicare Advantage
  • Independent Medical Systems - Commercial (PPO)
  • Independent Medical Systems - Workers Compensation
  • Injury Management Organization - Workers Compensation
  • Interlink - Transplant Network
  • International Benefits Administrators - Third Party Administrator
  • Kempton Group Administrators - Third Party Administrator
  • Key Benefits Administrators - Third Party Administrator
  • LifeTrac - Transplant Network
  • Lucent Health - Third Party Administrator
  • Medicaid (Traditional) - Medicaid/Medicare
  • Molina Healthcare - CHIP/CHIP Perinate
  • Molina Healthcare - Commercial (Exchange)
  • Molina Healthcare - Medicaid (STAR, STAR Kids, STAR PLUS)
  • Molina Healthcare - Medicare Advantage
  • Molina Healthcare - Medicare-Medicaid Dual Eligible Plans
  • MultiPlan - Commercial (All products)
  • OptumHealth - Transplant Network
  • Oscar - Commercial Exchange
  • Point Comfort Underwriters - Refugee Medical Assistance (Adults, Children)
  • Prime Health Services - Commercial (PPO)
  • Prime Health Services - Medicare Advantage (All Products)
  • Prime Health Services - Workers Compensation
  • Private Healthcare Systems - Commercial (All Products)
  • ProCare Advantage - Medicare Advantage (Special Needs Plan)
  • Provider Network of America - Commercial (All Products)
  • Provider Partners Health Plan - Medicare Advantage (Special Needs Plan)
  • SANA Benefits - Commercial (All Products)
  • Scott & White Health Plan - Commercial (Exchange, HMO, PPO)
  • Scott & White Health Plan - Medicaid/Medicare Advantage (All Products)
  • Superior HealthPlan - CHIP/CHIP Perinate
  • Superior HealthPlan - Medicaid (STAR, STAR Health Foster Care, STAR Kids, STAR PLUS)
  • Superior HealthPlan - Medicare-Medicaid Dual Eligible Plans
  • Surest (United Healthcare) - Commercial (All Products)
  • Texas Independence Health Plan - Medicare Advantage (Special Needs Plan)
  • Three Rivers Provider Network (Contigo) - Commercial (PPO)
  • Tokio Marine - Transplant Network
  • TriWest - TRICARE West Region
  • TriWest - VA Community Care Network
  • Trustmark Benefits (f/k/a CoreSource) - Third Party Administrator
  • UnitedHealthcare - Commercial (Charter EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Choice Plus POS/PPO/Choice Plus-HAS)
  • UnitedHealthcare - Commercial (Compass EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Core and Core Choice Plus EPO/HMO)
  • UnitedHealthcare - Commercial (Doctors Plan EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Heritage EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Indemnity)
  • UnitedHealthcare - Commercial (Navigate EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Nexus ACO/EPO/HMO/POS)
  • UnitedHealthcare - Commercial (PPO)
  • UnitedHealthcare - Commercial (Select EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Select Plus EPO/HMO/POS)
  • UnitedHealthcare - Medicare Advantage (AARP Plans, Complete Care Plans, Erickson Advantage Plans)
  • UnitedHealthcare - Medicare Advantage (UnitedHealthcare Group Plans, WellMed)
  • UnitedHealthcare Community Plan - CHIP/CHIP Perinate
  • UnitedHealthcare Community Plan - Medicaid (STAR, STAR Kids, STAR PLUS)
  • UnitedHealthcare Community Plan - Medicare-Medicaid Dual Eligible Plans
  • Universal Benefits Consortium (Allegiance) - Direct Contract with TPA/Broker for select ISDs
  • University of Incarnate Word - Direct Contact with Employer
  • Velocity National Provider Network - Commercial (Multiple Payers)
  • Velocity National Provider Network - Commercial (PPO)
  • Veterans Administration - Governmental
  • WebTPA - Third Party Administrator
  • WellCare - Medicare Advantage
  • WellMed (Gonzaba Medical Group IPA) - Medicare Advantage (Transplant Only)
  • WellMed - Medicare Advantage (Cigna HealthSpring, Humana, United Healthcare, WellPoint)
  • WellPoint (Gonzaba) - Medicare Advantage (TRANSPLANTS ONLY)
  • WellPoint - CHIP/CHIP Perinate
  • WellPoint - Commercial (Exchange)
  • WellPoint - Medicaid (STAR, STAR Kids, STAR PLUS)
  • WellPoint - Medicare Advantage (All Products)
  • WellPoint - Medicare Advantage (Transplant Only)
  • WellPoint - Medicare Advantage (WellMed)
  • WellPoint - Medicare-Medicaid Dual Eligible Plans
  • Zelis - Third Party Administrator
Please contact your health insurance company to confirm provider participation. For billing and insurance questions, please call our Billing Department at 210-358-3260.
I’m a pediatric endocrinologist at University Health and an assistant professor in the division of pediatric endocrinology and diabetes at UT Health San Antonio.
My interests include learning about cystic fibrosis-related diabetes (CFRD) and other CF endocrine related disorders. The majority of my research and presentations have focused on improving the screening, diagnosis and management of CFRD.
For the past seven years, I have helped develop a multidisciplinary clinic for CFRD patients in the CF Center with the CF Center director and staff. I’m the endocrinologist dedicated to seeing the adult CF patients with endocrine disorders. I have a KL2 research grant and a multi-center research grant that collaborates in recruiting and treatment of patients with CF-related diabetes issues.
Research Interests:
  • Continuous glucose monitoring in Type 1 diabetes and cystic fibrosis patients
  • Cystic fibrosis-related diabetes screening, diagnosis and treatment

Abstracts

  1. Lynch JL, Willey-Courand DB, Rayas MS, Guajardo JR. Screening for Cystic Fibrosis-Related Diabetes by an Integrated Care Team Using an Algorithm; 2011 Jan. (Pediatric Pulmonology).

Book Chapters

  1. TODAY Study Group, & Bjornstad Petter El ghormli Laure Hughan Kara S. Laffel Lori M. Nadeau Kristen J. Rayas Maria Tesfaldet Bereket Tollefsen Sherida E. Willi Steven M. Lynch Jane. (2022). Effects of metabolic factors, race-ethnicity, and sex on the development of nephropathy in adolescents and young adults with type 2 diabetes: results from the TODAY Study. Diabetes Care, 45(5), 1056-1064.
  2. Orsi C, Rayas M, Escaname E, Hutchins, J. Chapter 8: Pediatric Type 2 Diabetes Mellitus. In: Orsi CM; Rayas MS; Escaname EN, Hutchins J. Recent Advances in Pediatric Medicine Synopsis of General Pediatric Practice. 2017. p. 105-116.

Journal Articles

  1. Arslanian S, El Ghormli L, Haymond MH, Chan CL, Chernausek SD, Gandica RG, Gubitosi-Klug R, Levitsky LL, Siska M, Willi SM; TODAY Study Group. (J Lynch, E Escaname, M Rayas) . Beta cell function and insulin sensitivity in obese youth with maturity onset diabetes of youth mutations vs type 2 diabetes in TODAY: Longitudinal observations and glycemic failure. Pediatr Diabetes. 2020 Jun;21(4):575-585. doi: 10.1111/pedi.12998. Epub 2020 Mar 3. PMID: 32064729.
  2. Kaar JL, Schmiege SJ, Drews K, Higgins J, Walders-Abramson N, Isganaitis E, Willi SM, Marcus MD, Zeitler PS, Kelsey MM. Evaluation of the longitudinal change in health behavior profiles across treatment groups in the TODAY clinical trial. (J Lynch, E Escaname, M Rayas) Pediatr Diabetes. 2020 Mar;21(2):224-232. doi: 10.1111/pedi.12976 PMID: 31886931.
  3. Shah R, McKay SV, Levitt Katz LE, El Ghormli L, Anderson BJ, Casey TL, Higgins L, Izquierdo R, Wauters AD, Chang N; TODAY Study Group.(J Lynch, E Escaname, M Rayas) . Adherence to multiple medications in the TODAY (Treatment Options for type 2 Diabetes in Adolescents and Youth) cohort: effect of additional medications on adherence to primary diabetes medication. J Pediatr Endocrinol Metab. 2020 Feb 25;33(2):191-198. doi: 10.1515/jpem-2019-0315. PMID: 31809265.
  4. Rayas MS, Kelly A, Hughan KS, Daley T, Zangen D. Adrenal Function in Cystic Fibrosis J Cyst Fibros 2019 Oct;18:S74-S81.
  5. Block JP, Bailey LC, Gillman MW, Lunsford D, Daley MF, Eneli I, Finkelstein J, Heerman W, Horgan CE, Hsia DS, Jay M, Rao G, Reynolds JS, Rifas-Shiman SL, Sturtevant JL, Toh S, Trasande L, Young J, Forrest CB, Rayas MS. PCORnet Antibiotics and Childhood Growth Study Group. Early Antibiotic Exposure and Weight Outcomes in Young Children Pediatrics 2019 Jan.
  6. Daley Jean Pierre, Tangpricha Vin, Kelly A, Rayas MS, Hughan Kara. Vitamin D deficiency and its Treatment in Cystic Fibrosis Journal of Cystic Fibrosis 2019 Oct; 18:S66-S73.
  7. Klingensmith GJ, Lanzinger S, Tamborlane WV, Hofer S, Cheng P, deBeaufort C, Gal RL, Reinehr T, Kollman C, Holl R. PDC Consortium: Lynch JL, Orsi CM, Rayas MS, Barajas R. Adolescent Type 2 Diabetes: Comparing the Pediatric Diabetes Consortium and Germany/Austria/Luxemburg Pediatric Diabetes Prospective Registries Pediatr Diabetes 2018 Nov;19(7):1156-1163.
  8. Block JP, Bailey LC, Gillman MW, Lunsford D, Boone-Heinonen J, Cleveland LP, Finkelstein J, Horgan C, Jay M, Reynolds JS, Sturtevant J, Forrest CB. PCORnet Antibiotics Childhood Growth Study Group Tirado-Ramos A, Rayas M. PCORnet Antibiotics and Childhood Growth Study: Process for Cohort Creation and Cohort Description Acad Pediatr 2018 Jul;18(5):569-576.

Other Publications

  1. Castellanos LE, Russell SJ, Damiano ER, Beck RW, Shah VN, Bailey R, Calhoun P, Bird K, Mauras N; Bionic Pancreas Research Group. The Insulin-Only Bionic Pancreas Improves Glycemic Control in Non-Hispanic White and Minority Adults and Children With Type 1 Diabetes. Diabetes Care. 2023 Mar 31:dc221478. doi: 10.2337/dc22-1478. PMID: 37000680.
  2. Mauras N, Damiano ER, El-Khatib FH, Marak MC, Calhoun P, Ruedy KJ, Balliro C, Li Z, Beck RW, Russell SJ. Utility and Safety of Backup Insulin Regimens Generated by the Bionic Pancreas: A Randomized Study. Diabetes Technol Ther. 2023 Mar 22. doi: 10.1089/dia.2022.0461. PMID: 36877259.
  3. VAVRINA, K., PILLAI, R., & RAYAS, M. S. (2023). 1110-P: Role of Ethnicity in Weight Gain after 12 Months of Exacaftor/Tezacaftor/Ivacaftor in Children with Cystic Fibrosis. Diabetes, 72(Supplement_1).
  4. Beck RW, Russell SJ, Damiano ER, El-Khatib FH, Ruedy KJ, Balliro C, Li Z, Calhoun P. A Multicenter Randomized Trial Evaluating Fast-Acting Insulin Aspart in the Bionic Pancreas in Adults with Type 1 Diabetes. Diabetes Technol Ther. 2022 Oct;24(10):681-696. doi: 10.1089/dia.2022.0167. PMID: 36173235; PMCID: PMC9529301.
  5. Messer LH, Buckingham BA, Cogen F, Daniels M, Forlenza G, Jafri RZ, Mauras N, Muir A, Wadwa RP, White PC, Russell SJ, Damiano ER, El-Khatib FH, Ruedy KJ, Balliro CA, Li Z, Marak MC, Calhoun P, Beck RW. Positive Impact of the Bionic Pancreas on Diabetes Control in Youth 6-17 Years Old with Type 1 Diabetes: A Multicenter Randomized Trial. Diabetes Technol Ther. 2022 Oct;24(10):712-725. doi: 10.1089/dia.2022.0201.pub. PMID: 36173237; PMCID: PMC9529304.
  6. Lynch J, Kanapka LG, Russell SJ, Damiano ER, El-Khatib FH, Ruedy KJ, Balliro C, Calhoun P, Beck RW.The Insulin-Only Bionic Pancreas Pivotal Trial Extension Study: A Multi-Center Single-Arm Evaluation of the Insulin-Only Configuration of the Bionic Pancreas in Adults and Youth with Type 1 Diabetes. Diabetes Technol Ther. 2022 Oct;24(10):726-736. doi: 10.1089/dia.2022.0341. PMID: 36173238; PMCID: PMC9529297.
  7. Bionic Pancreas Research Group, Multicenter, Randomized Trial of a Bionic Pancreas in Type 1 Diabetes. N Engl J Med. 2022 Sep 29;387(13):1161-1172. doi: 10.1056/NEJMoa2205225. PMID: 36170500.
  8. He, S., Ryu, J., Liu, J., Luo, H., Lv, Y., Langlais, P. R., ... & Dong, L. Q. (2021). LRG1 is an adipokine that mediates obesity-induced hepatosteatosis and insulin resistance. The Journal of clinical investigation, 131(24).
  9. Nadeau, K. J., Arslanian, S., Bacha, F., Caprio, S., Chan, C., Chao, L. C., ... & TODAY Study Group. Effect of Early Glycemic Control in Youth-Onset Type 2 Diabetes on Longer-Term Glycemic Control and β-Cell Function: Results From the TODAY Study. Diabetes Care.
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