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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 employed by Penn Medicine.

About Dr. Peter A. Merkel

Recognized by America's Top Doctors, 2014 - 2018

Recognized by Best Doctors in America - 2013 - 2018

Recognized in Philadelphia magazine's annual Top Docs issue, 2013 to 2019

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.

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

Clinical Specialties


  • Rheumatology

Programs & Centers:

Board Certification:

  • Rheumatology, 1994

Clinical Expertise:

  • Acute Arthritis
  • Ankylosing Spondylitis
  • Arthritis
  • Biologic Therapy for Rheumatologic Diseases
  • Bursitis
  • Calcium Pyrophosphate Deposition Disease
  • Carpal Tunnel Syndrome
  • Crystalline Arthritis
  • Dermatomyositis
  • Discoid Lupus Erythematosus
  • Enthesitis
  • Gout
  • Granulomatosis with Polyangiitis
  • Inflammatory Polyarthropathy
  • Joint Injections
  • Lupus
  • Maternal Collagen Vascular Disorder
  • Maternal Lupus
  • Microscopic Polyangiitis
  • Mixed Connective Tissue Disease
  • Myositis
  • Osteoarthritis (OA)
  • Paget's Disease
  • Polyarteritis Nodosa
  • Polyarthropathy
  • Polymyalgia Rheumatica
  • Polymyositis
  • Post-Infectious Arthritis
  • Pseudogout
  • Psoriatic Arthritis
  • Raynaud's Syndrome
  • Rheumatoid Arthritis (RA)
  • Sarcoidosis
  • Scleroderma
  • Scleroderma (Systemic Sclerosis)
  • Septic Arthritis
  • Sicca Syndrome
  • Sjogren’s Syndrome
  • Temporal Arteritis (Giant Cell Arteritis)
  • Vasculitis
Show All Expertise

Practice Locations and Appointments

Insurance Accepted

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

Education and Training

Medical School: Yale University
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 employed by Penn Medicine.

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:

Jayne D, Blockmans D, Luqmani R, Moiseev S, Ji B, Green Y, Hall L, Roth D, Henderson RB, Merkel PA; Collaborators, Lozano JA, Becker H, Quiroz AC, Carette S, Carrillo-Vazquez S, Cid MC, D'Cruz D, Deodhar A, Flossman O, Garibotto G, Gesualdo L, Hall S, Hauser T, Hellmich B, Kidder D, Kimmel M, Little M, Majdan M, Maksimowicz-McKinnon K, Marder G, Matsievskaia G, Meneses AS, Molloy E, Mueller R, Neuwelt C, Hernandez JR, Specks U, Tesar V, Walsh M.: "Efficacy and Safety of Belimumab and Azathioprine for Maintenance of Remission in ANCA-Associated Vasculitis: A Randomized Controlled Study." Arthritis Rheumatol 71 (6): 952-963,2019.

Banerjee S, Quinn KA, Gribbons KB, Rosenblum JS, Civelek AC, Novakovich E, Merkel PA, Ahlman MA, Grayson PC.: "Effect of Treatment on Imaging, Clinical, and Serologic Assessments of Disease Activity in Large-Vessel Vasculitis." J Rheumatology : 2019.

Tomasson G, Farrar JT, Cuthbertson D, McAlear CA, Ashdown S, Cronholm PF, Dawson J, Gebhart D, Lanier G, Luqmani RA, Milman N, Peck J, Robson JC, Shea JA, Carette S, Khalidi N, Koening CL, Langford CA, Monach PA, Moreland L, Pagnoux C, Specks U, Sreih AG, Ytterberg SR, Merkel PA; Vasculitis Clinical Research Consortium.: "Feasibility and Construct Validation of the Patient Reported Outcomes Measurement Information System (PROMIS) in Systemic Vasculitis." J Rheumatol : 2019.

Aydin SZ, Robson JC, Sreih AG, Hill C, Alibaz-Oner F, Mackie S, Beard S, Hatemi G, Kermani TA, Mahr A, Meara A, Milman N, Shea B, Tómasson G, Tugwell P, Direskeneli H, Merkel PA.: "Update on Outcome Measure Development in Large-Vessel Vasculitis: Report from OMERACT 2018." J Rheumatol : 2019.

Kermani TA, Diab S, Sreih AG, Cuthbertson D, Borchin R, Carette S, Forbess L, Koening CL, McAlear CA, Monach PA, Moreland L, Pagnoux C, Seo P, Spiera RF, Warrington KJ, Ytterberg SR, Langford CA, Merkel PA, Khalidi NA: "Arterial lesions in giant cell arteritis: A longitudinal study" Vasculitis Clinical Research Consortium Semin Arthritis Rheum 48 (4): 707-13,2019.

Robson JC, Jayne D, Merkel PA, Dawson J: "Systemic vasculitis and patient-reported outcomes: how the assessment of patient preferences and perspectives could improve outcomes." Patient Relat Outcome Meas : 2019.

Milman N, McConville E, Robson JC, Boonen A, Tugwell P, Wells GA, Chaudhuri D, Dawson J, Tomasson G, Ashdown S, Gebhart D, Lanier G, Peck J, McAlear CA, Kellom KS, Cronholm PF, Merkel PA.: "Updating OMERACT Core Set of Domains for ANCA-Associated Vasculitis: Patient Perspective Using the International Classification of Function, Disability and Health." J Rheumatol : 2019.

Lee KS, Kronbichler A, Pereira Vasconcelos DF, Pereira da Silva FR, Ko Y, Oh YS, Eisenhut M, Merkel PA, Jayne D, Amos CI, Siminovitch KA, Rahmattulla C, Lee KH, Shin JI.: "Genetic Variants in Antineutrophil Cytoplasmic Antibody-Associated Vasculitis: A Bayesian Approach and Systematic Review." J Clin Med 8 (2): 2019.

Young K, Kaminstein D, Olivos A, Burroughs C, Castillo-Lee C, Kullman J, McAlear C, Shaw DG, Sreih AG, Casey G; Vasculitis Patient-Powered Research Network, Merkel PA.: "Patient involvement in medical research: what patients and physicians learn from each other." Orphanet J Rare Dis 14 (1): 2019.

Pagnoux C, Nair P, Xi Y, Khalidi NA, Carette S, Cuthbertson D, Grayson PC, Koening CL, Langford CA, McAlear CA, Moreland LW, Monach PA, Seo P, Specks U, Sreih AG, Ytterberg SR, Tyrrell PN, Merkel PA; Vasculitis Clinical Research Consortium.: "Serum cytokine and chemokine levels in patients with eosinophilic granulomatosis with polyangiitis, hypereosinophilic syndrome, or eosinophilic asthma." Clin Exp Rheumatol : 2019.

Academic Contact Info

Ms. Kathleen Ryan

Hospital of the University of Pennsylvania
Rheumatology Division
3400 Spruce St
5 White

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

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