Dr. Merlyn M. Thomas MD
Obstetrician and Gynecologist
She is located at 11555 University Boulevard in Sugar Land, TX 77478. Can help patients with the following: Braxton Hicks Contractions, Fibrocystic Breast Disease, Perimenopause, Polycystic Ovary Syndrome (PCOS), Pregnancy, Premenstrual Syndrome (PMS). Her National Provider Identifier (NPI) number is 1699122325. Appointment can be made via the phone number (713) 442-9100.
Conditions treated
Dr. Merlyn Mary Thomas, being an obstetrician and gynecologist, 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. Merlyn M. Thomas.
- Amenorrhea
- Bacterial Vaginosis
- Birth Control Counseling
- Blood in Urine
- Braxton Hicks Contractions
- Breast Cancer
- Breastfeeding
- Breastfeeding and Lactation
- Cancer
- Cervical Cancer
- Cervical Intraepithelial Neoplasia (CIN)
- Chlamydia
- Ectopic Pregnancy
- Endometriosis
- Fibrocystic Breast Disease
- Gestational Diabetes
- Group B Streptococcal Infection (GBS)
- Gynecological Exam
- High Blood Pressure
- Hot Flashes
- Human Papillomavirus (HPV)
- Infertility
- Labor and Birth
- Menopause
- Menstrual Cramps
- Miscarriage
- Morning Sickness
- Osteoporosis
- Ovarian Cancer
- Ovarian Cysts
- Overactive Bladder (OAB)
- Pelvic Inflammatory Disease (PID)
- Pelvic Pain
- Perimenopause
- Placenta Previa
- Polycystic Ovary Syndrome (PCOS)
- Preeclampsia and Eclampsia
- Pregnancy
- Premature Ovarian Failure (POF)
- Premenstrual Dysphoric Disorder (PMDD)
- Premenstrual Syndrome (PMS)
- Prenatal Care
- Sexually Transmitted Diseases (STDs)
- Trichomoniasis
- Urinary Incontinence (UI)
- Urinary Retention
- Urinary Tract Infection (UTI)
- Uterine Cancer
- Uterine Fibroids
- Uterine Growths
- VBAC
- Vaginal Atrophy and Dryness
- Vaginal Bleeding
- Vaginal Cancer
- Vaginal Pain
- Vaginitis
- Women's Health
- Yeast Infection
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Merlyn M. Thomas as in-network for the following 2026 plans.
Health plans
Harbor Health
Network data as of Sep 14, 2026, as reported by the insurer.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Harbor Health G0 $0 Deductible $0 PCP $0 Mental Health Office Visit $0 Express Care | HMO · Gold | Preferred | Accepting new patients |
| Harbor Health G1S $30 PCP $30 Mental Health Office Visit $30 Express Care | HMO · Gold | Preferred | Accepting new patients |
| Harbor Health S1 $0 PCP $0 Mental Health Office Visit $0 Express Care | HMO · Silver | Preferred | Accepting new patients |
| Harbor Health S1S $40 PCP $40 Mental Health Office Visit $40 Express Care | HMO · Silver | Preferred | Accepting new patients |
UnitedHealthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 6 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Kelsey-Seybold Bronze Copay Focus $0 Indiv Med Ded | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Kelsey-Seybold Bronze Copay Focus+ $0 Indiv Med Ded (Dental + Vision) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Kelsey-Seybold Gold Copay Focus $0 Indiv Med Ded ($8 Tier 2 Rx) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Kelsey-Seybold Gold Copay Focus+ $0 Indiv Med Ded ($8 Tier 2 Rx, Dental + Vision) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Kelsey-Seybold Silver Copay Focus $0 Indiv Med Ded | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Kelsey-Seybold Silver Copay Focus+ $0 Indiv Med Ded (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. Merlyn M. Thomas 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. Merlyn M. Thomas is enrolled to bill Medicare as a Practitioner - Obstetrics/gynecology .
Bills through: Kelsey-seybold Medical Group, Pllc
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.
Additional Specialities
- Resident
Looking for more Obstetrician and Gynecologists?
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- Gender: Female
- Address: 11555 University Boulevard Sugar Land, 77478, TX
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- Address: 11555 University Boulevard Sugar Land, 77478, TX
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- Gender: Male
- Address: Suite 101 14090 Southwest Freeway Sugar Land, 77478, TX
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- Address: Suite 200 15200 Southwest Freeway Sugar Land, 77478, TX
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- Address: Suite 500 1327 Lake Pointe Parkway Sugar Land, 77478, TX
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- Address: 7001 Corporate Drive Suite 120 Houston, 77036, TX
- Gender: Female
- Address: 14023 Southwest Freeway Sugar Land, 77478, TX
- Gender: Male
- Address: Suite 315 1327 Lake Pointe Parkway Sugar Land, 77478, TX
Questions & Answers
Where can you meet with Dr. Merlyn Mary Thomas?
Dr. Merlyn Mary Thomas's office is located at 11555 University Boulevard in Sugar Land, TX 77478.
Does Dr. Merlyn Mary Thomas accept insurance?
Dr. Merlyn Mary Thomas is listed in-network for 10 ACA Marketplace (Obamacare/HealthCare.gov) plans from Harbor Health, UnitedHealthcare. See the Marketplace plans section for details.
What conditions does Dr. Merlyn Mary Thomas treat?
Dr. Merlyn Mary Thomas provides treatment for Braxton Hicks Contractions, Fibrocystic Breast Disease, Perimenopause, Polycystic Ovary Syndrome (PCOS), Pregnancy, Premenstrual Syndrome (PMS). For the full list see this list.