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Peter A. Merkel, MD, MPH

Peter A. Merkel, MD, MPH Physician

Chief, Division of Rheumatology Professor of Medicine Professor of Epidemiology in Biostatistics and Epidemiology

Dr. Merkel is a Penn Medicine employed physician.

About Dr. Peter A. Merkel

Recognized in Philadelphia Magazine's annual Top Docs issue, 2013 through 2016

Recognized by America's Top Doctors, 2014

Recognized by Best Doctors in America - 2013-2014

Patient Satisfaction Ratings

Patient Rating Breakdown

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Penn Medicine.

Overall Ratings

Patient Comments

Clinical Specialties


  • Rheumatology

Programs & Centers:

Board Certification:

  • Rheumatology, 1994

Practice Locations and Appointments

  • Penn Rheumatology

    Perelman Center for Advanced Medicine South Pavilion, 1st Floor 3400 Civic Center Boulevard Philadelphia, PA 19104 800-789-7366 (PENN)

    A facility of the Hospital of the University of Pennsylvania

Insurance Accepted

  • Aetna US Healthcare
  • Cigna
  • Cigna HealthSpring
  • CVS Health
  • Devon Health Services (Americare)
  • Gateway Health Plan
  • Geisinger Health Plan
  • HealthAmerica / HealthAssurance, a Coventry Plan
  • HealthPartners
  • HealthPartners Medicare
  • HealthSmart
  • Highmark Blue Shield
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana / Choicecare
  • Independence Blue Cross (Keystone East)
  • Intergroup
  • Keystone First
  • Multiplan
  • NJ Medicaid
  • NJ Qualcare
  • Oxford Health Plan
  • PA Medicaid
  • PA Medicare
  • Preferred Health Care/LGH
  • Rail Road Medicare / Palmetto GBA
  • Remedy Partners at Penn Medicine
  • Tricare
  • United Healthcare
  • UnitedHealthcare Community Plan
  • US Family Health Plan

Education and Training

Medical School: Yale University School of Medicine
Residency: Hospital of the University of Pennsylvania
Fellowship: Massachusetts General Hospital


American College of Physicians, National American College of Rheumatology, National American Federation of Clinical Research, National Churg Strauss Syndrome Association, National European League Against Rheumatism (EULAR) Guidelines Committee on Classification Criteria for Vasculitis, International International Network for the Study of Systemic Vasculitides, International Member, Scleroderma Clinical Trials Consortium, National New England Rheumatism Society, Local Scleroderma Clinical Trials Consortium, National Scleroderma Foundation, New England Chapter, Local Society of General Internal Medicine, National Takayasu's Arteritis Association, National Vasculitis Foundation, National

Hospital Affiliation

Dr. Merkel is a Penn Medicine employed physician.

Hospital Privileges:

  • Hospital of the University of Pennsylvania: Has privileges to treat patients in the hospital.
  • Penn Presbyterian Medical Center: Has privileges to treat patients in the hospital.


Selected Publications:

Tomasson G, Davis JC, Hoffman GS, McCune WJ, Specks U, Spiera R, St Clair EW, Stone JH, Merkel PA.: Brief report: the value of a patient global assessment of disease activity in granulomatosis with polyangiitis (Wegener's). Arthritis & Rheumatology 66 : 428-32,2014.

Tomasson G, Peloquin C, Mohammad A, Love TJ, Zhang Y, Choi HK, Merkel PA.: Risk of Cardiovascular Disease Early and Late After a Diagnosis of Giant Cell Arteritis. Annals of Internal Medicine 160 : 73-80,2014.

Johnson SR, Naden RP, Fransen J, van den Hoogen F, Pope JE, Baron M, Tyndall A, Matucci-Cerinic M, Denton CP, Distler O, Gabrielli A, van Laar JM, Mayes M, Steen V, Seibold JR, Clements P, Medsger TA Jr, Carreira PE, Riemekasten G, Chung L, Fessler BJ, Merkel PA, Silver R, Varga J, Allanore Y, Mueller-Ladner U, Vonk MC, Walker UA, Cappelli S, Khanna D.: Multicriteria decision analysis methods with 1000Minds for developing systemic sclerosis classification criteria. J Clin Epidemiol. 67 : 706-14,2014.

Xie G, Roshandel D, Sherva R, Monach PA, Lu Y, Kung T, Carrington K, Zhang SS, Pulit SL, Ripke S, Carette S, Dellaripa PF, Edberg JC, Hoffman GS, Khalidi N, Langford CA, Mahr AD, St. Clair EW, Seo P, Specks U, Spiera RF, Stone JH, Ytterberg SR, Raychaudhuri S, de Bakker PIW, Farrer LA, Amos CI, Merkel PA, Siminovitch1 KA.: Granulomatosis with polyangiitis (Wegener’s) is associated with HLA-DPB1*04 and SEMA6A gene variants: Evidence from genome-wide analysis. Arthritis & Rheumatism 65 : 2457-68,2013.

Lieberthal JG, Cuthbertson D, Carette S, Hoffman GS, Khalidi NA, Koening CL, Langford CA, Maksimowicz-McKinnon K, Seo P, Specks U, Ytterberg SR, Merkel PA, Monach PA;: Urinary biomarkers in relapsing antineutrophil cytoplasmic antibody-associated vasculitis. Vasculitis Clinical Research Consortium. J Rheumatol. 40 : 674-83,2013.

Rhee RL, Von Feldt JM, Schumacher HR, Merkel PA: Readability and Suitability Assessment of Patient Education Materials in Rheumatic Diseases. 2013; 65:1702-6. Arthritis Care Res 65 : 1702-06,2013.

Jennette JC, Falk RJ, Bacon PA, Basu N, Cid MC, Ferrario F, Flores-Suarez LF, Gross WL, Guillevin L, Hagen EC, Hoffman GS, Jayne DR, Kallenberg CGM, Lamprecht P, Langford CA, Luqmani RA, Mahr AD, Matteson EL, Merkel PA, Ozen S, Pusey CD, Rasmussen N, Rees AJ, Scott DGI, Specks U, Stone JH, Takahashi K, Watts RA.: 2012 Revised International Chapel Hill Consensus Conference Nomenclature of Vasculitides. Arthritis & Rheumatism 65 : 1-11,2013.

Saruhan-Direskeneli G, Hughes T, Aksu K, Keser G, Coit P, Aydin SZ, Alibaz-Oner F, Kamali S, Inanc M, Carette S, Hoffman GS, Akar S, Onen F, Akkoc N, Khalidi NA, Koening C, Karadag O, Kiraz S, Langford CA, McAlear CA, Ozbalkan Z, Ates A, Karaaslan Y, Maksimowicz-McKinnon K, Monach PA, Ozer HT, Seyahi E, Fresko I, Cefle A, Seo P, Warrington KJ, Ozturk MA, Ytterberg SR, Cobankara V, Onat AM, Guthridge JM, James JA, Tunc E, Duzgun N, Bicakcigil M, Yentür SP, Merkel PA, Direskeneli H, Sawalha AH.: Identification of Multiple Genetic Susceptibility Loci in Takayasu Arteritis. Am J Hum Genet 93 : 298-305,2013.

Cozmuta C, Merkel, PA, Fraenkel L.: Variability in Experts’ Opinions Regarding Risks and Treatment Choices in Patients with ANCA Associated Vacuities. Journal of Clinical Rheumatology 19 : 426-31,2013.

Komarla A, Schumacher HR, Merkel PA.: Spinal Gout Presenting as Acute Low Back Pain. Arthritis & Rheumatism. Arthritis & Rheumatism 65 : 2660,2013.

Academic Contact Info

Ms. Kathleen Ryan

Hospital of the University of Pennsylvania
Rheumatology Division, 8th Floor-Penn Tower
3400 Civic Center Boulevard

Philadelphia, PA 19104
Phone: (215) 614-4401
Fax: (215) 614-4402
Patient appointments: 800-789-7366 (PENN)

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