Robert Mannel
Expertise in
17
conditions

Dr. Robert Mannel

Obstetrics and Gynecology
Ou Health Stephenson Cancer Center-Gynecologic Cancer Clinic
800 NE 10th St Ste 2100, 
Oklahoma City, OK 
44 Years of Experience
Expertise in
17
conditions
Ou Health Stephenson Cancer Center-Gynecologic Cancer Clinic
800 NE 10th St Ste 2100, 
Oklahoma City, OK 

Overview

Robert Mannel is an Obstetrics and Gynecologist in Oklahoma City, Oklahoma. Dr. Mannel has been practicing medicine for over 44 years is highly rated in 17 conditions, according to our data. His top areas of expertise are Ovarian Cancer, Endometrial Cancer, Cervical Cancer, Lymphadenectomy, and Hysterectomy.

His clinical research consists of co-authoring 98 peer reviewed articles and participating in 23 clinical trials. MediFind looks at clinical research from the past 15 years.

Graduate Year

1982

Specialties

Obstetrics and Gynecology

Licenses

Obstetrics & Gynecology in OK

Hospital Affiliations

Integris Health Enid Hospital
O U Medical Center

Languages Spoken

English

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
GlobalHealth
  • INSURANCE PLAN
  • MEDICARE MAPD
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Medica
  • EPO
  • HMO
  • PPO
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 4 Less Insurance Carriers -

Locations

Ou Health Stephenson Cancer Center-Gynecologic Cancer Clinic
800 NE 10th St Ste 2100, Oklahoma City, OK 73104

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

23 Clinical Trials

Exceptional Responders Pilot Study: Molecular Profiling of Tumors From Cancer Patients Who Are Exceptional Responders
Exceptional Responders Pilot Study: Molecular Profiling of Tumors From Cancer Patients Who Are Exceptional Responders
Enrollment Status: Active_not_recruiting
Publish Date: February 12, 2026
Intervention Type: Other
A Phase III Randomized Controlled Clinical Trial of Carboplatin and Paclitaxel (or Gemcitabine) Alone or in Combination With Bevacizumab (NSC #704865) Followed by Bevacizumab and Secondary Cytoreductive Surgery in Platinum-Sensitive, Recurrent Ovarian, Peritoneal Primary and Fallopian Tube Cancer. NCI-Supplied Agents: Bevacizumab (NSC #704865)
A Phase III Randomized Controlled Clinical Trial of Carboplatin and Paclitaxel (or Gemcitabine) Alone or in Combination With Bevacizumab (NSC #704865) Followed by Bevacizumab and Secondary Cytoreductive Surgery in Platinum-Sensitive, Recurrent Ovarian, Peritoneal Primary and Fallopian Tube Cancer. NCI-Supplied Agents: Bevacizumab (NSC #704865)
Enrollment Status: Active_not_recruiting
Publish Date: December 30, 2025
Intervention Type: Other, Drug, Biological
Study Drugs: Bevacizumab, Carboplatin, Docetaxel, Gemcitabine Hydrochloride, Paclitaxel
Study Phase: Phase 3
A Randomized, Phase II/III Study of Pegylated Liposomal Doxorubicin and CTEP-Supplied Atezolizumab Versus Pegylated Liposomal Doxorubicin, CTEP-Supplied Bevacizumab and CTEP-Supplied Atezolizumab Versus Pegylated Liposomal Doxorubicin and CTEP-Supplied Bevacizumab in Platinum Resistant Ovarian Cancer
A Randomized, Phase II/III Study of Pegylated Liposomal Doxorubicin and CTEP-Supplied Atezolizumab Versus Pegylated Liposomal Doxorubicin, CTEP-Supplied Bevacizumab and CTEP-Supplied Atezolizumab Versus Pegylated Liposomal Doxorubicin and CTEP-Supplied Bevacizumab in Platinum Resistant Ovarian Cancer
Enrollment Status: Active_not_recruiting
Publish Date: December 02, 2025
Intervention Type: Other, Procedure, Drug, Biological
Study Drugs: Atezolizumab, Bevacizumab, Pegylated liposomal doxorubicin hydrochloride
Study Phase: Phase 2/Phase 3
A Randomized Phase III Trial of Radiation Therapy and Cisplatin Alone or in Combination With Intravenous Triapine in Women With Newly Diagnosed Bulky Stage IB2, Stage II, IIIB, or IVA Cancer of the Uterine Cervix or Stage II-IVA Vaginal Cancer
A Randomized Phase III Trial of Radiation Therapy and Cisplatin Alone or in Combination With Intravenous Triapine in Women With Newly Diagnosed Bulky Stage IB2, Stage II, IIIB, or IVA Cancer of the Uterine Cervix or Stage II-IVA Vaginal Cancer
Enrollment Status: Active_not_recruiting
Publish Date: December 01, 2025
Intervention Type: Radiation, Drug, Other
Study Drugs: Cisplatin, Triapine
Study Phase: Phase 3
A Phase III Study Comparing Single-Agent Olaparib or the Combination of Cediranib and Olaparib to Standard Platinum-Based Chemotherapy in Women With Recurrent Platinum-Sensitive Ovarian, Fallopian Tube, or Primary Peritoneal Cancer
A Phase III Study Comparing Single-Agent Olaparib or the Combination of Cediranib and Olaparib to Standard Platinum-Based Chemotherapy in Women With Recurrent Platinum-Sensitive Ovarian, Fallopian Tube, or Primary Peritoneal Cancer
Enrollment Status: Active_not_recruiting
Publish Date: December 01, 2025
Intervention Type: Drug, Procedure, Other
Study Drugs: Carboplatin, Cediranib Maleate, Gemcitabine, Gemcitabine Hydrochloride, Olaparib, Paclitaxel, Pegylated Liposomal Doxorubicin Hydrochloride
Study Phase: Phase 3
A Randomized Phase II/III Study of the Combination of Cediranib and Olaparib Compared to Cediranib or Olaparib Alone, or Standard of Care Chemotherapy in Women With Recurrent Platinum-Resistant or -Refractory Ovarian, Fallopian Tube, or Primary Peritoneal Cancer (COCOS)
A Randomized Phase II/III Study of the Combination of Cediranib and Olaparib Compared to Cediranib or Olaparib Alone, or Standard of Care Chemotherapy in Women With Recurrent Platinum-Resistant or -Refractory Ovarian, Fallopian Tube, or Primary Peritoneal Cancer (COCOS)
Enrollment Status: Active_not_recruiting
Publish Date: December 01, 2025
Intervention Type: Procedure, Drug, Other
Study Drugs: Cediranib, Cediranib Maleate, Olaparib, Paclitaxel, Pegylated Liposomal Doxorubicin Hydrochloride, Topotecan, Topotecan Hydrochloride
Study Phase: Phase 2/Phase 3
A Randomized Phase II/III Study to Assess the Efficacy of Trametinib (GSK 1120212) in Patients With Recurrent or Progressive Low-Grade Serous Ovarian Cancer or Peritoneal Cancer
A Randomized Phase II/III Study to Assess the Efficacy of Trametinib (GSK 1120212) in Patients With Recurrent or Progressive Low-Grade Serous Ovarian Cancer or Peritoneal Cancer
Enrollment Status: Completed
Publish Date: November 13, 2025
Intervention Type: Other, Drug
Study Drugs: Letrozole, Paclitaxel, Pegylated liposomal doxorubicin hydrochloride, Tamoxifen citrate, Topotecan, Trametinib dimethyl sulfoxide
Study Phase: Phase 2/Phase 3
Phase II Randomized Trial of Nivolumab With or Without Ipilimumab in Patients With Persistent or Recurrent Epithelial Ovarian, Primary Peritoneal, or Fallopian Tube Cancer
Phase II Randomized Trial of Nivolumab With or Without Ipilimumab in Patients With Persistent or Recurrent Epithelial Ovarian, Primary Peritoneal, or Fallopian Tube Cancer
Enrollment Status: Completed
Publish Date: August 29, 2025
Intervention Type: Biological
Study Phase: Phase 2
A Phase I/II Study of Ruxolitinib With Front-Line Neoadjuvant and Post-Surgical Therapy in Patients With Advanced Epithelial Ovarian, Fallopian Tube or Primary Peritoneal Cancer
A Phase I/II Study of Ruxolitinib With Front-Line Neoadjuvant and Post-Surgical Therapy in Patients With Advanced Epithelial Ovarian, Fallopian Tube or Primary Peritoneal Cancer
Enrollment Status: Completed
Publish Date: May 25, 2025
Intervention Type: Drug, Procedure
Study Drugs: Carboplatin, Paclitaxel, Ruxolitinib phosphate
Study Phase: Phase 1/Phase 2
Randomized Phase III Clinical Trial of Adjuvant Radiation Versus Chemoradiation in Intermediate Risk, Stage I/IIA Cervical Cancer Treated With Initial Radical Hysterectomy and Pelvic Lymphadenectomy (NCT #01101451)
Randomized Phase III Clinical Trial of Adjuvant Radiation Versus Chemoradiation in Intermediate Risk, Stage I/IIA Cervical Cancer Treated With Initial Radical Hysterectomy and Pelvic Lymphadenectomy (NCT #01101451)
Enrollment Status: Completed
Publish Date: May 23, 2025
Intervention Type: Other, Radiation, Drug
Study Drug: Cisplatin
Study Phase: Phase 3
Comparative Analysis of CA-IX, p16, Proliferative Markers, and Human Papilloma Virus (HPV) in the Diagnosis of Significant Cervical Lesions in Patients With a Cytologic Diagnosis of Atypical Glandular Cells (AGC)
Comparative Analysis of CA-IX, p16, Proliferative Markers, and Human Papilloma Virus (HPV) in the Diagnosis of Significant Cervical Lesions in Patients With a Cytologic Diagnosis of Atypical Glandular Cells (AGC)
Enrollment Status: Active_not_recruiting
Publish Date: May 03, 2024
Intervention Type: Other
Study Phase: Not Applicable
Evaluation of Physical Function and Quality of Life (QOL) Before and After Non-Radical Surgical Therapy (Extra Fascial Hysterectomy or Cone Biopsy With Pelvic Lymphadenectomy) for Stage IA1 (LVSI+) and IA2-IB1 (≤ 2CM) Cervical Cancer
Evaluation of Physical Function and Quality of Life (QOL) Before and After Non-Radical Surgical Therapy (Extra Fascial Hysterectomy or Cone Biopsy With Pelvic Lymphadenectomy) for Stage IA1 (LVSI+) and IA2-IB1 (≤ 2CM) Cervical Cancer
Enrollment Status: Active_not_recruiting
Publish Date: May 03, 2024
Intervention Type: Other, Procedure
Study Phase: Not Applicable
A Randomized Trial of Pelvic Irradiation With or Without Concurrent Weekly Cisplatin in Patients With Pelvic-Only Recurrence of Carcinoma of the Uterine Corpus
A Randomized Trial of Pelvic Irradiation With or Without Concurrent Weekly Cisplatin in Patients With Pelvic-Only Recurrence of Carcinoma of the Uterine Corpus
Enrollment Status: Unknown
Publish Date: March 29, 2023
Intervention Type: Drug, Radiation
Study Drug: Cisplatin
Study Phase: Phase 2
A Phase III Trial of Adjuvant Chemotherapy Following Chemoradiation as Primary Treatment for Locally Advanced Cervical Cancer Compared to Chemoradiation Alone: The OUTBACK Trial
A Phase III Trial of Adjuvant Chemotherapy Following Chemoradiation as Primary Treatment for Locally Advanced Cervical Cancer Compared to Chemoradiation Alone: The OUTBACK Trial
Enrollment Status: Completed
Publish Date: November 07, 2022
Intervention Type: Other, Drug, Radiation
Study Drugs: Carboplatin, Cisplatin, Paclitaxel
Study Phase: Phase 3
A Phase III Randomized Trial of Pulse Actinomycin-D Versus Multi-day Methotrexate for the Treatment of Low-Risk Gestational Trophoblastic Neoplasia
A Phase III Randomized Trial of Pulse Actinomycin-D Versus Multi-day Methotrexate for the Treatment of Low-Risk Gestational Trophoblastic Neoplasia
Enrollment Status: Completed
Publish Date: August 12, 2022
Intervention Type: Other, Drug, Biological
Study Drugs: Dactinomycin, Leucovorin Calcium, Methotrexate
Study Phase: Phase 3
A Phase II Evaluation of Copanlisib (BAY 80-6946), a Selective Inhibitor of PI3KCA, in Patients With Persistent or Recurrent Endometrial Carcinoma Harboring PIK3CA Hotspot Mutations
A Phase II Evaluation of Copanlisib (BAY 80-6946), a Selective Inhibitor of PI3KCA, in Patients With Persistent or Recurrent Endometrial Carcinoma Harboring PIK3CA Hotspot Mutations
Enrollment Status: Completed
Publish Date: February 15, 2022
Intervention Type: Drug, Other
Study Drug: Copanlisib
Study Phase: Phase 2
A Randomized Phase II Trial of Paclitaxel and Carboplatin vs. Bleomycin, Etoposide, and Cisplatin for Newly Diagnosed Advanced Stage and Recurrent Chemonaive Sex Cord-Stromal Tumors of the Ovary
A Randomized Phase II Trial of Paclitaxel and Carboplatin vs. Bleomycin, Etoposide, and Cisplatin for Newly Diagnosed Advanced Stage and Recurrent Chemonaive Sex Cord-Stromal Tumors of the Ovary
Enrollment Status: Unknown
Publish Date: January 25, 2022
Intervention Type: Biological, Drug, Other
Study Drugs: Bleomycin Sulfate, Carboplatin, Cisplatin, Etoposide Phosphate, Paclitaxel
Study Phase: Phase 2
A Phase II Trial Evaluating Cisplatin (NSC #119875) and Gemcitabine (NSC #613327) Concurrent With Intensity-Modulated Radiation Therapy (IMRT) in the Treatment of Locally Advanced Squamous Cell Carcinoma of the Vulva (NCT #01595061)
A Phase II Trial Evaluating Cisplatin (NSC #119875) and Gemcitabine (NSC #613327) Concurrent With Intensity-Modulated Radiation Therapy (IMRT) in the Treatment of Locally Advanced Squamous Cell Carcinoma of the Vulva (NCT #01595061)
Enrollment Status: Unknown
Publish Date: December 29, 2021
Intervention Type: Drug, Procedure, Radiation
Study Drugs: Cisplatin, Gemcitabine Hydrochloride
Study Phase: Phase 2
A Randomized Surgical Window Pilot Investigation of the Relationship of Short Term Medroxyprogesterone Acetate (NSC #26386) Compared to Medroxyprogesterone Acetate Plus Entinostat (NSC #706995) on the Morphologic, Biochemical, and Molecular Changes in Primary Endometrioid Adenocarcinoma of the Uterine Corpus
A Randomized Surgical Window Pilot Investigation of the Relationship of Short Term Medroxyprogesterone Acetate (NSC #26386) Compared to Medroxyprogesterone Acetate Plus Entinostat (NSC #706995) on the Morphologic, Biochemical, and Molecular Changes in Primary Endometrioid Adenocarcinoma of the Uterine Corpus
Enrollment Status: Completed
Publish Date: November 16, 2021
Intervention Type: Procedure, Drug, Other
Study Phase: Early Phase 1
A Phase II Evaluation of Elesclomol Sodium and Weekly Paclitaxel in the Treatment of Recurrent or Persistent Platinum-Resistant Ovarian, Fallopian Tube or Primary Peritoneal Cancer
A Phase II Evaluation of Elesclomol Sodium and Weekly Paclitaxel in the Treatment of Recurrent or Persistent Platinum-Resistant Ovarian, Fallopian Tube or Primary Peritoneal Cancer
Enrollment Status: Completed
Publish Date: October 20, 2021
Intervention Type: Drug
Study Phase: Phase 2
A Randomized Phase II/III Study of Paclitaxel/Carboplatin/Metformin (NSC#91485) Versus Paclitaxel/Carboplatin/Placebo as Initial Therapy for Measurable Stage III or IVA, Stage IVB, or Recurrent Endometrial Cancer
A Randomized Phase II/III Study of Paclitaxel/Carboplatin/Metformin (NSC#91485) Versus Paclitaxel/Carboplatin/Placebo as Initial Therapy for Measurable Stage III or IVA, Stage IVB, or Recurrent Endometrial Cancer
Enrollment Status: Unknown
Publish Date: September 30, 2021
Intervention Type: Other, Drug
Study Drugs: Carboplatin, Metformin hydrochloride, Paclitaxel
Study Phase: Phase 2/Phase 3
A Phase I Trial of Sequential Ipilimumab After Chemoradiation for the Primary Treatment of Patients With Locally Advanced Cervical Cancer Stages IB2/IIA With Positive Para-Aortic Lymph Nodes Only and Stage IIB/IIIB/IVA With Positive Lymph Nodes
A Phase I Trial of Sequential Ipilimumab After Chemoradiation for the Primary Treatment of Patients With Locally Advanced Cervical Cancer Stages IB2/IIA With Positive Para-Aortic Lymph Nodes Only and Stage IIB/IIIB/IVA With Positive Lymph Nodes
Enrollment Status: Completed
Publish Date: September 02, 2020
Intervention Type: Radiation, Drug, Biological, Other
Study Phase: Phase 1
A Phase I Study of Intraperitoneal Egen-001 (IL-12 Plasmid Formulated With PEG-PEI-Cholesterol Lipopolymer) Administered in Combination With Pegylated Liposomal-Doxorubicin (PLD, Doxil (NSC# 712227 or Lipodox (NSC#673089) in Patients With Recurrent or Persistent Epithelial Ovarian, Fallopian Tube or Primary Peritoneal Cancer
A Phase I Study of Intraperitoneal Egen-001 (IL-12 Plasmid Formulated With PEG-PEI-Cholesterol Lipopolymer) Administered in Combination With Pegylated Liposomal-Doxorubicin (PLD, Doxil (NSC# 712227 or Lipodox (NSC#673089) in Patients With Recurrent or Persistent Epithelial Ovarian, Fallopian Tube or Primary Peritoneal Cancer
Enrollment Status: Completed
Publish Date: March 12, 2019
Intervention Type: Other, Drug, Biological
Study Phase: Phase 1
View 22 Less Clinical Trials

98 Total Publications

Prospective assessment of prognostic significance of malignant peritoneal cytology in endometrial cancer: An NRG Oncology / Gynecologic Oncology Group study on GOG-210 protocol.
Prospective assessment of prognostic significance of malignant peritoneal cytology in endometrial cancer: An NRG Oncology / Gynecologic Oncology Group study on GOG-210 protocol.
Journal: Gynecologic oncology
Published: August 04, 2025
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Frequently Asked Questions about Dr. Robert Mannel

How do I make an appointment with Dr. Robert Mannel?

You can book an appointment with Dr. Robert Mannel by calling their office at 405-271-8707. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Robert Mannel a top-rated expert for Ovarian Cancer?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Robert Mannel is classified as an Elite expert for Ovarian Cancer, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Robert Mannel specialize in?

While Dr. Robert Mannel is a Obstetrics and Gynecology, they have specific expertise in Ovarian Cancer, Endometrial Cancer, and Cervical Cancer. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Obstetrics and Gynecology.

Does Dr. Robert Mannel participate in research or clinical trials?

Yes. Dr. Robert Mannel has published 98 articles and abstracts on conditions like Ovarian Cancer. You can view a list of Dr. Robert Mannel's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Robert Mannel accept my insurance?

Dr. Robert Mannel accepts most major insurance plans, including Aetna and Cigna. We recommend calling the office directly at 405-271-8707 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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