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
Find Dr. Nien's expertise for a condition
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- Distinguished
- CholedocholithiasisDr. Nien isDistinguished. Learn about Choledocholithiasis.
- Gallbladder DiseaseDr. Nien isDistinguished. Learn about Gallbladder Disease.
- GallstonesDr. Nien isDistinguished. Learn about Gallstones.
- HerniaDr. Nien isDistinguished. Learn about Hernia.
- Umbilical HerniaDr. Nien isDistinguished. Learn about Umbilical Hernia.
- Advanced
- ALK-Positive Non-Small Cell Lung Cancer
- CellulitisDr. Nien isAdvanced. Learn about Cellulitis.
- CholecystitisDr. Nien isAdvanced. Learn about Cholecystitis.
- Familial Colorectal CancerDr. Nien isAdvanced. Learn about Familial Colorectal Cancer.
- Hernia SurgeryDr. Nien isAdvanced. Learn about Hernia Surgery.
- Ogilvie SyndromeDr. Nien isAdvanced. Learn about Ogilvie Syndrome.
- Retroperitoneal InflammationDr. Nien isAdvanced. Learn about Retroperitoneal Inflammation.
View All 7 Advanced Conditions
- Experienced
- AcrospiromaDr. Nien isExperienced. Learn about Acrospiroma.
- Acute PancreatitisDr. Nien isExperienced. Learn about Acute Pancreatitis.
- Adult Soft Tissue SarcomaDr. Nien isExperienced. Learn about Adult Soft Tissue Sarcoma.
- Anal CancerDr. Nien isExperienced. Learn about Anal Cancer.
- Anal FissureDr. Nien isExperienced. Learn about Anal Fissure.
- AngiosarcomaDr. Nien isExperienced. Learn about Angiosarcoma.
- AppendicitisDr. Nien isExperienced. Learn about Appendicitis.
- Bile Duct StrictureDr. Nien isExperienced. Learn about Bile Duct Stricture.
- Biliary DyskinesiaDr. Nien isExperienced. Learn about Biliary Dyskinesia.
- Childhood PancreatitisDr. Nien isExperienced. Learn about Childhood Pancreatitis.
- Cholangiocarcinoma (Bile Duct Cancer)
- Colonic MalakoplakiaDr. Nien isExperienced. Learn about Colonic Malakoplakia.
- ColonoscopyDr. Nien isExperienced. Learn about Colonoscopy.
- ColostomyDr. Nien isExperienced. Learn about Colostomy.
- Congenital Diaphragmatic HerniaDr. Nien isExperienced. Learn about Congenital Diaphragmatic Hernia.
- Diverticular DiseaseDr. Nien isExperienced. Learn about Diverticular Disease.
- Epidural LipomatosisDr. Nien isExperienced. Learn about Epidural Lipomatosis.
- Epithelioid SarcomaDr. Nien isExperienced. Learn about Epithelioid Sarcoma.
- Femoral HerniaDr. Nien isExperienced. Learn about Femoral Hernia.
- FibrosarcomaDr. Nien isExperienced. Learn about Fibrosarcoma.
- GastrectomyDr. Nien isExperienced. Learn about Gastrectomy.
- Gastroesophageal Junction CancerDr. Nien isExperienced. Learn about Gastroesophageal Junction Cancer.
- Gastrointestinal FistulaDr. Nien isExperienced. Learn about Gastrointestinal Fistula.
- Gastrointestinal PerforationDr. Nien isExperienced. Learn about Gastrointestinal Perforation.
- Gastrointestinal Stromal TumorDr. Nien isExperienced. Learn about Gastrointestinal Stromal Tumor.
- GastrostomyDr. Nien isExperienced. Learn about Gastrostomy.
- HemorrhoidsDr. Nien isExperienced. Learn about Hemorrhoids.
- Hiatal HerniaDr. Nien isExperienced. Learn about Hiatal Hernia.
- IleostomyDr. Nien isExperienced. Learn about Ileostomy.
- Juvenile AngiofibromaDr. Nien isExperienced. Learn about Juvenile Angiofibroma.
- LiposarcomaDr. Nien isExperienced. Learn about Liposarcoma.
- Lump in the AbdomenDr. Nien isExperienced. Learn about Lump in the Abdomen.
- Lymphofollicular HyperplasiaDr. Nien isExperienced. Learn about Lymphofollicular Hyperplasia.
- MesenchymomaDr. Nien isExperienced. Learn about Mesenchymoma.
- Mesenteric Venous ThrombosisDr. Nien isExperienced. Learn about Mesenteric Venous Thrombosis.
- Myxoid LiposarcomaDr. Nien isExperienced. Learn about Myxoid Liposarcoma.
- NecrosisDr. Nien isExperienced. Learn about Necrosis.
- Necrotizing FasciitisDr. Nien isExperienced. Learn about Necrotizing Fasciitis.
- Neuroendocrine TumorDr. Nien isExperienced. Learn about Neuroendocrine Tumor.
- Peptic UlcerDr. Nien isExperienced. Learn about Peptic Ulcer.
- PeritonitisDr. Nien isExperienced. Learn about Peritonitis.
- Pilonidal Sinus DiseaseDr. Nien isExperienced. Learn about Pilonidal Sinus Disease.
- ProctitisDr. Nien isExperienced. Learn about Proctitis.
- Progressive Familial Intrahepatic Cholestasis Type 1
- Progressive Familial Intrahepatic Cholestasis Type 2
- Progressive Familial Intrahepatic Cholestasis Type 3
- Pseudomyxoma PeritoneiDr. Nien isExperienced. Learn about Pseudomyxoma Peritonei.
- Rectal ProlapseDr. Nien isExperienced. Learn about Rectal Prolapse.
- Rhabdomyosarcoma EmbryonalDr. Nien isExperienced. Learn about Rhabdomyosarcoma Embryonal.
- Secondary PeritonitisDr. Nien isExperienced. Learn about Secondary Peritonitis.
- Small Bowel ResectionDr. Nien isExperienced. Learn about Small Bowel Resection.
- Squamous Cell Carcinoma of the Anal Canal (SCAC)
- Stomach CancerDr. Nien isExperienced. Learn about Stomach Cancer.
- ThrombophlebitisDr. Nien isExperienced. Learn about Thrombophlebitis.
View All 54 Experienced Conditions
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