Siba P. Raychaudhuri, M.D. for UC Davis Health

Siba P. Raychaudhuri, M.D.

Professor, Department of Medicine and Dermatology

To see if Siba P. Raychaudhuri is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).




Rheumatology, Allergy and Clinical Immunology


Internal Medicine

Locations and Contact

Mather VA Mental Health

Sacramento VA Medical Center
10535 Hospital Way
Mather, CA 95755

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Additional Numbers

Clinic Phone


Clinic Fax


Physician Referrals

800-4-UCDAVIS (800-482-3284)

Philosophy of Care

We address the well-being of patients along with their personal needs by delivering innovative, compassionate, patient- and family-centered health care, enriched by education, science, and technology.

Clinical Interests

Dr. Raychaudhuri is a Rheumatologist and an immunologist with special interest in psoriasis and psoriatic arthritis.

Research/Academic Interests

Dr. Raychaudhuri's research focus is develop novel therapies for autoimmune disease with special focus in psoriasis and psoriatic arthritis.


Rheumatology, Allergy and Clinical Immunology

Medical School

M.B.B.S., Calcutta University, Medical College, Calcutta, India 1983

Medical School

M.D., Post Graduate Institute of Medical Education and Research, Chandigarh, India 1987


UC San Francisco, VA Medical Center Fresno, Fresno CA 1992-1993


Kaiser Medical Center, Oakland CA 1993-1995


American College of Rheumatology, Stanford University School of Medicine, Palo Alto CA 2006


Postdoctoral Fellowship, Stanford University School of Medicine and Psoriasis Research Institute, Palo Alto CA 1990-1992


Diplomat, ABIM, UC San Francisco, VA Medical Center Fresno and Kaiser Medical, Fresno and Oakland CA 1995

Annual Askari Rheumatology Lecture, Dept. of Medicine, University Hospitals Cleveland Medical Center, Ohio, 2022

Best International Paper Award- Indian Association of Dermatology (IADVL), 2020

National Psoriasis Foundation-USA: Psoriatic Arthritis Grant Award, 2019

American College of Rheumatology's Meet the Professor (2015-2017), 2015

Raychaudhuri SK, Abria C, Raychaudhuri SP. Polyfunctional TEM cells in psoriatic arthritis synovium skewed towards Th17 cells. Ann Rheum Dis. 2022 Jan;81(1):e5. doi:10.1136/annrheumdis-2019-216658. Epub 2019 Dec 20. PMID:31862702.

Raychaudhuri SK, Abria C, Raychaudhuri SP. Phenotype and pathological significance of MCAM+ (CD146+) T cell subset in psoriatic arthritis. Mol Biol Rep. 2021 Oct;48(10):6787-6796. doi:10.1007/s11033-021-06678-2. Epub 2021 Sep 7. PMID:34491483.

Mease PJ, Chohan S, Fructuoso FJG, Luggen ME, Rahman P, Raychaudhuri SP, Chou RC, Mendelsohn AM, Rozzo SJ, Gottlieb A. Efficacy and safety of tildrakizumab in patients with active psoriatic arthritis: results of a randomised, double-blind, placebo-controlled, multiple-dose, 52-week phase IIb study. Ann Rheum Dis. 2021 Sep;80(9):1147-1157. doi:10.1136/annrheumdis-2020-219014. Epub 2021 May 13. PMID:33985942.

Raychaudhuri S, Cheema KS, Raychaudhuri SK, Raychaudhuri SP. Janus kinase-signal transducers and activators of transcription cell signaling in Spondyloarthritis: rationale and evidence for JAK inhibition. Curr Opin Rheumatol. 2021 Jul 1;33(4):348-355. doi:10.1097/BOR.0000000000000810. PMID:34014847.

Toussi A, Maverakis N, Le ST, Sarkar S, Raychaudhuri SK, Raychaudhuri SP. Updated therapies for the management of Psoriatic Arthritis. Clin Immunol. 2020 Nov;220:108536. doi:10.1016/j.clim.2020.108536. Epub 2020 Jul 16. PMID:32681979.

Sarkar S, Fung MA, Raychaudhuri SP. "Coral bead sign" in Multicentric Reticulohistiocytosis. Int J Dermatol. 2020 Jun;59(6):e203-e204. doi:10.1111/ijd.14746. Epub 2019 Nov 28. PMID:31782143.

Sarkar S, Panda S, Kim B, Raychaudhuri SK, Ghosh A, Raychaudhuri SP. Risk of tuberculosis with anti-tumor necrosis factor-alpha therapy in patients with psoriasis and psoriatic arthritis in Indian population. Indian J Dermatol Venereol Leprol. 2020 Jan-Feb;86(1):1-7. doi:10.4103/ijdvl.IJDVL_791_18. PMID:31719235.

Raychaudhuri SK, Abria C, Mitra A, Raychaudhuri SP. Functional significance of MAIT cells in psoriatic arthritis. Cytokine. 2020 Jan;125:154855. doi:10.1016/j.cyto.2019.154855. Epub 2019 Sep 18. PMID:31541902.

Raychaudhuri S, Abria C, Harmany ZT, Smith CM, Kundu-Raychaudhuri S, Raychaudhuri SP, Chaudhari AJ. Quantitative tracking of inflammatory activity at the peak and trough plasma levels of tofacitinib, a Janus kinase inhibitor, via in vivo 18 F-FDG PET. Int J Rheum Dis. 2019 Dec;22(12):2165-2169. doi:10.1111/1756-185X.13732. Epub 2019 Oct 29. PMID:31659868.

Kim B, Maverakis E, Raychaudhuri SP. Is It Possible to Discontinue Tumor Necrosis Factor Antagonists after Psoriasis Remission? Ann Dermatol. 2019 Oct;31(5):495-501. doi:10.5021/ad.2019.31.5.495. Epub 2019 Aug 30. PMID:33911640.