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Clarisa Catherine Hammer, D.O.

Photo of Dr. Clarisa Catherine Hammer, D.O.


Breast Surgery, General Surgery, Oncoplastic Breast Conservation Surgery, Plastic Surgery, Reconstructive Surgery


Affiliates in Plastic Surgery

4660 Kenmore Ave
Ste 220
Alexandria, VA 22304 map
Phone: 703-888-2034 | Fax: 703-888-2095

Affiliates in Plastic Surgery

4701 Randolph Rd
Ste 201
Rockville, MD 20852 map
Phone: 301-232-3000 | Fax: 301-232-3333


Dr. Clarisa C. Hammer is a surgeon affiliated with Sibley Memorial Hospital and Inova Hospitals. Dr. Hammer is board certified in surgery and plastic surgery by the American Board of Surgery. She practices out of Affiliates in Plastic Surgery, located in Alexandria, Virginia and Rockville, Maryland.

Dr. Hammer has expertise in plastic and reconstructive surgery, as well as breast and oncoplastic surgery.

Dr. Hammer earned her medical degree from Lake Erie College of Osteopathic Medicine. She completed a residency in general surgery at St. Johns Oakland Hospital, followed by a fellowship in breast surgical oncology at Cleveland Clinic and a fellowship in oncoplastic breast surgery at Los Angeles County and USC Medical Center. Dr. Hammer also completed a European oncoplastic fellowship through European Institute of Oncology and a final fellowship at Philadelphia College of Osteopathic Medicine, where she studied plastic and reconstructive surgery.

Dr. Hammer volunteers with Samaritan's Purse, International Organization for Women and Development and the Cure Hospitals.

Dr. Hammer is a member of the American Osteopathic Association. more

Departments / Divisions

  • Surgery at Sibley Memorial Hospital



  • DO, Lake Erie College of Osteopathic Medicine (2002)


  • St Johns Oakland Hospital / General Surgery (2007)


  • Cleveland Clinic (2008)
  • LAC + USC Medical Center (2009)
  • European Institute of Oncology (2010)
  • Philadelphia College of Osteopathic Medicine / Plastic and Reconstructive Surgery (2012)

Board Certifications

  • AOA Board of Surgery / Plastic Surgery (2014)

Research & Publications

Selected Publications

View all on Pubmed

Tang SH, Hammer CC, Doumanian L, Santucci RA. "Adult urethral stricture disease after childhood hypospadias repair." Adv Urol. 2008:150315. doi: 10.1155/2008/150315.

Hammer CC, Santucci RA. "Genitourinary emergencies: how to appropriately manage GU injuries & illnesses." JEMS. 2005 Mar;30(3):120-2, 124, 126-8 passim; quiz 136.

Hammer CC, Santucci RA. "Effect of an institutional policy of nonoperative treatment of grades I to IV renal injuries." J Urol. 2003 May;169(5):1751-3.

Activities & Honors


  • American Osteopathic Association

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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