31 Years of Experience
Who is Dr. Nan, Obstetrician / Gynecologist (OBGYN) in Antioch, CA?
Where did Dr. Nan go to medical school and complete their residency?
Residency: St Francis Hosp Med Ctr, Obstetrics And Gynecology | St Francis Hospital Med Center
Is Dr. Nan board certified as an Obstetrician / Gynecologist (OBGYN)?
Yes, Dr. Allen Nan, MD is board certified by the American Board of Obstetrics and Gynecology
What languages does Dr. Nan speak?
Dr. Nan and their clinical team can communicate with patients in the following languages:
- Chinese
- English
- Portuguese
- Spanish
What conditions does an Obstetrician / Gynecologist (OBGYN) like Dr. Nan typically treat?
As an Obstetrician / Gynecologist (OBGYN), Dr. Nan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Nan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Routine Gynecological Exam (Normal Findings)
- Women's Health Checkup
- Women's checkup, all clear
- Pelvic exam, normal results
- OB/GYN visit, no issues
ICD-10 Codes:
- Z01419: Encounter for gynecological examination (general) (routine) without abnormal findings
Also known as:
- Birth Control Management (Unspecified)
- Other Birth Control Counseling
- Birth Control
- General contraceptive care
- Family planning management
- Birth control services
- Additional contraceptive advice
- General family planning discussion
- Ongoing birth control counseling
ICD-10 Codes:
- Z309: Encounter for contraceptive management, unspecified
- Z3009: Encounter for other general counseling and advice on contraception
Also known as:
- Other Vaginal Disorder
- Vaginal Disease
- Non-inflammatory Vaginal Conditions
- Specific Vaginal Problems
ICD-10 Codes:
- N898: Other specified noninflammatory disorders of vagina
Also known as:
- Understanding Test Results
- Test results explanation
- Medical findings review
- Diagnostic interpretation
ICD-10 Codes:
- Z712: Person consulting for explanation of examination or test findings
Also known as:
- Third Trimester Prenatal Care
- Prenatal Care
- Late Pregnancy Check-ups
- Routine Third Trimester Care
- Maternity Care (Third Trimester)
ICD-10 Codes:
- Z3483: Encounter for supervision of other normal pregnancy, third trimester
Also known as:
- Abnormal Uterine and Vaginal Bleeding
- Vaginal Bleeding
- Unusual Uterine Bleeding
- Abnormal Vaginal Discharge
- AUB
- Irregular Genital Bleeding
ICD-10 Codes:
- N939: Abnormal uterine and vaginal bleeding, unspecified
Also known as:
- General High-Risk Pregnancy Care
- Health Problems in Pregnancy
- Specialized Obstetric Monitoring
- Maternal-Fetal Medicine Consult
- Pregnancy Management for Complications
ICD-10 Codes:
- O0993: Supervision of high risk pregnancy, unspecified, third trimester
Also known as:
- Breast Cancer Screening
- Health Screening
- Breast Cancer Screening (PDQ®)
- Mammogram
- Breast Exam
- Breast Cancer Check
ICD-10 Codes:
- Z1239: Encounter for other screening for malignant neoplasm of breast
Also known as:
- Painful Urination
- Urine and Urination
- Dysuria
- Burning when peeing
- Stinging during urination
ICD-10 Codes:
- R300: Dysuria
Also known as:
- Amenorrhea
- Menstruation
- Absent Periods
- No Periods
- Lack of Menstruation
ICD-10 Codes:
- N912: Amenorrhea, unspecified
What procedures does an Obstetrician / Gynecologist (OBGYN) like Dr. Nan typically perform?
As an Obstetrician / Gynecologist (OBGYN), Dr. Nan performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Nan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Colposcopy with Cervical Biopsy and Curettage
- Colposcopy
- Cervical Biopsy
- Endocervical Curettage
- Pap Smear Follow-up Procedure
CPT Codes:
- 57454: Colposcopy of the cervix including upper/adjacent vagina; with biopsy(s) of the cervix and endocervical curettage
Also known as:
- Fetal Non-Stress Test
- Nonstress Test
- Nonstress Test (NST)
- Fetal Heart Rate Monitoring
- NST for Pregnancy
- Baby Heartbeat Test
CPT Codes:
- 59025: Fetal non-stress test
Does Dr. Nan accept my insurance?
Dr. Nan accepts most major insurance plans. Important: Please call our office at (925) 813-6500 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Nan accept in Antioch, CA?
Dr. Nan in Antioch, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Conifer Health Solutions
Kaiser Permanente
OptumRx Administered Payer
State of California
View All Insurances
Where is Dr. Nan's office located?
What is Dr. Nan's NPI number?A National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Nan's National Provider Identifier (NPI) number is 1750469326.
What common questions do patients ask about Dr. Nan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Nan