Photo of Phillipp Hartmann, M.D., M.A.S., D.A.B.O.M


Gastroenterology, Hepatology and Nutrition


Gastroenterology, Hepatology and Nutrition


Rady Children's Specialists of San Diego

Medical Group / IPA


Medical School

University of Regensburg, Germany


UC San Diego


UC San Diego

Board Certifications

General Pediatrics, Pediatric Gastroenterology, Hepatology and Nutrition, Obesity Medicine


After completing medical school at the University of Regensburg in Germany, Dr. Hartmann carried out his postgraduate training at the University of California San Diego (UCSD) and Rady Children's Hospital San Diego.

Dr. Hartmann is a physician-scientist and currently an Assistant Professor in Pediatrics at UCSD and attending at Rady Children’s. His clinical focus is metabolic dysfunction-associated steatotic liver disease and steatohepatitis (MASLD/MASH), formerly known as nonalcoholic fatty liver disease and steatohepatitis (NAFLD/NASH).

His research focuses on the role of the intestinal microbiome in various liver diseases, including MASLD and MASH. He has received multiple awards and grants from the National Institutes of Health and foundations, including the prestigious Pinnacle Award in Liver Diseases from the American Association for the Study of Liver Diseases (AASLD) among others. He is serving on various national committees and editorial boards of scientific journals. His primary goal is to develop better and more personalized treatment approaches to cure MASLD/MASH and other liver diseases.

He is an avid soccer player and aspiring surfer.


Toll-like receptor 2-mediated intestinal injury and enteric tumor necrosis factor receptor I contribute to liver fibrosis in mice
Hartmann P, Haimerl M, Mazagova M, Brenner DA, Schnabl B

Deficiency of intestinal mucin-2 ameliorates experimental alcoholic liver disease in mice
Hartmann P, Chen P, Wang HJ, Wang L, McCole DF, Brandl K, Stärkel P, Belzer C, Hellerbrand C, Tsukamoto H, Ho SB, Schnabl B

Nod2 deficiency protects mice from cholestatic liver disease by increasing renal excretion of bile acids
Wang L, Hartmann P, Haimerl M, Bathena SP, Sjöwall C, Almer S, Alnouti Y, Hofmann AF, and Schnabl B

Deficiency of intestinal mucin-2 protects mice from diet-induced fatty liver disease and obesity
Hartmann P, Seebauer CT, Mazagova M, Horvath A, Wang L, Llorente C, Brandl K, Ho SB, Brenner DA, and Schnabl B

Intestinal REG3 Lectins Protect against Alcoholic Steatohepatitis by Reducing Mucosa-Associated Microbiota and Preventing Bacterial Translocation
Wang L, Fouts DE, Stärkel P, Hartmann P, Chen P, Llorente C, DePew J, Moncera K, Ho SB, Brenner DA, Hooper LV, Schnabl B

Intestinal fungi contribute to development of alcoholic liver disease
Yang AM, Inamine T, Hochrath K, Chen P, Wang L, Llorente C, Bluemel S, Hartmann P, Xu J, Koyama Y, Kisseleva T, Torralba MG, Moncera K, Beeri K, Chen CS, Freese K, Hellerbrand C, Lee SM, Hoffman HM, Mehal WZ, Garcia-Tsao G, Mutlu EA, Keshavarzian A, Brown GD, Ho SB, Bataller R, Stärkel P, Fouts DE, Schnabl B

Modulation of the intestinal bile acid/farnesoid X receptor/fibroblast growth factor 15 axis improves alcoholic liver disease in mice
Hartmann P, Hochrath K, Horvath A, Chen P, Seebauer CT, Llorente C, Wang L, Alnouti Y, Fouts DE, Stärkel P, Loomba R, Coulter S, Liddle C, Yu RT, Ling L, Rossi SJ, DePaoli AM, Downes M, Evans RM, Brenner DA, Schnabl B

Dysregulation of serum bile acids and FGF19 in alcoholic hepatitis
Brandl K, Hartmann P, Jih LJ, Pizzo DP, Argemi J, Ventura-Cots M, Coulter S, Liddle C, Ling L, Rossi SJ, DePaoli AM, Loomba R, Mehal WZ, Fouts D, Lucey M, Bosques F, Mathurin P, Louvet A, Garcia-Tsao G, Verna EC, Abraldes JG, Brown RS Jr, Vargas V, Altamirano J, Caballería J, Shawcross D, Stärkel P, Ho SB, Bataller R, Schnabl B

Dynamic Changes of the Fungal Microbiome in Alcohol Use Disorder
Hartmann P, Carter R, Keller B, Saenz NC, Schwarz KB

Colesevelam ameliorates non-alcoholic steatohepatitis and obesity in mice
Hartmann P, Duan Y, Miyamoto Y, Lang S, Hasa E, Stern P, Yamashita D, Conrad M, Eckmann L, Schnabl B

The fecal mycobiome in non-alcoholic fatty liver disease
Demir M, Lang S, Hartmann P, Duan Y, Martin A, Miyamoto Y, Bondareva M, Zhang X, Wang Y, Kasper P, Bang C, Roderburg C, Tacke F, Steffen HM, Goeser T, Kruglov A, Eckmann L, Stärkel P, Fouts DE, Schnabl B

Intestinal virome in patients with alcohol use disorder and after abstinence
Hsu CL, Zhang X, Jiang L, Lang S, Hartmann P, Pride D, Fouts DE, Stärkel P, and Schnabl B

See the full listing of this physician's publications on PubMed, a service of the National Library of Medicine. PubMed is a third-party website and not affiliated with Rady Children's Hospital-San Diego.

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