Affiliated with a Castle Connolly Top Hospital
Who is Dr. Hammer, Obstetrician / Gynecologist (OBGYN) in Washington, DC?
Dr. Hammer earned her bachelor’s degree from Vanderbilt University and her medical degree from Rush University, where she also completed her residency in Obstetrics and Gynecology. She went on to complete a fellowship in Reproductive Endocrinology and Infertility at Massachusetts General Hospital, Harvard Medical School. An accomplished researcher, she has authored numerous scientific publications and book chapters, with research interests including IVF outcomes, environmental influences on fertility, and reproductive surgery. She is also one of the inaugural Surgical Scholars of the Society of Reproductive Surgeons, reflecting her expertise in minimally invasive fertility-preserving procedures.
WebsiteWhat are Areas of Expertise for Dr. Hammer?
Dr. Karissa Hammer, MD is a highly-rated, board-certified Obstetrician / Gynecologist (OBGYN) known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Hammer empowers patients to confidently navigate their health journey, specializing in Egg & Embryo Freezing, Endometriosis and Fertility, In Vitro Fertilization (IVF) , Infertility, Infertility-Advanced Maternal Age, LGBTQ+ Family Building, Miscarriage-Recurrent, Oncofertility, Polycystic Ovarian Syndrome, Third-Party Reproduction, and comprehensive wellness support. Serving the Washington, DC community, Dr. Hammer is dedicated to enhancing lives through expert, patient-centered care.
What languages does Dr. Hammer speak?
Dr. Hammer and their clinical team can communicate with patients in the following languages:
- English
What conditions does an Obstetrician / Gynecologist (OBGYN) like Dr. Hammer typically treat?
As an Obstetrician / Gynecologist (OBGYN), Dr. Hammer diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Hammer. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Assisted Reproductive Technology (ART) Cycle
- Assisted Reproductive Technology
- Infertility
- In Vitro Fertilization (IVF) Cycle
- Fertility Treatment Cycle
- ART Procedure
ICD-10 Codes:
- Z3183: Encounter for assisted reproductive fertility procedure cycle
Also known as:
- Fertility Testing
- Other Fertility Investigation and Testing
- Fertility Management (Unspecified)
- Infertility
- Infertility testing
- Reproductive health assessment
- Fertility evaluation
- Miscellaneous reproductive testing
- Advanced fertility workup
- Specialized procreative investigation
- General reproductive management
- Unspecified fertility care
- Procreative health services
ICD-10 Codes:
- Z3141: Encounter for fertility testing
- Z3149: Encounter for other procreative investigation and testing
- Z319: Encounter for procreative management, unspecified
Also known as:
- Female Infertility
- Female Infertility (Other Causes)
- Female Sterility
- Difficulty Getting Pregnant
- Unexplained Female Infertility
- Other Female Fertility Issues
- Idiopathic Female Infertility
ICD-10 Codes:
- N979: Female infertility, unspecified
- N978: Female infertility of other origin
Also known as:
- Uterine Polyp
- Uterine Disease
- Endometrial Polyp
- Womb Polyp
ICD-10 Codes:
- N840: Polyp of corpus uteri
Also known as:
- Pregnancy Test (Result Unknown)
- Pregnancy Test
- Inconclusive Pregnancy Test
- Unclear Pregnancy Test Result
- Pending Pregnancy Test
ICD-10 Codes:
- Z3200: Encounter for pregnancy test, result unknown
What procedures does an Obstetrician / Gynecologist (OBGYN) like Dr. Hammer typically perform?
As an Obstetrician / Gynecologist (OBGYN), Dr. Hammer performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Hammer. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Uterine Catheterization for Imaging
- Saline Infusion Sonohysterography Prep
- Hysterosalpingography Prep
- Uterine Contrast Injection
CPT Codes:
- 58340: Catheterization and introduction of saline or contrast material for saline infusion sonohysterography (SIS) or hysterosalpingography
Also known as:
- Hysteroscopy with Biopsy or Polyp Removal
- Hysteroscopy with Adhesion Removal
- Biopsy
- Hysteroscopy
- Uterine Scope with Biopsy
- Hysteroscopic Polypectomy
- D&C with Hysteroscopy
- Surgical Hysteroscopy
- Intrauterine Adhesiolysis
- Uterine Scar Tissue Removal
CPT Codes:
- 58558: Hysteroscopy, surgical; with sampling (biopsy) of endometrium and/or polypectomy, with or without D & C
- 58559: Hysteroscopy, surgical; with lysis of intrauterine adhesions (any method)
Also known as:
- Egg Retrieval for IVF
- Oocyte Retrieval
- Follicle Aspiration
- IVF Egg Collection
CPT Codes:
- 58970: Follicle puncture for oocyte retrieval, any method
Also known as:
- Uterine Lining Biopsy
- Biopsy
- Endometrial Biopsy
- Uterine Biopsy
- Cervical Biopsy
- Endocervical Sampling
CPT Codes:
- 58100: Endometrial sampling (biopsy) with or without endocervical sampling (biopsy), without cervical dilation, any method (separate procedure)
Also known as:
- Embryo Transfer to Uterus
- Intrauterine Embryo Transfer
- IVF Embryo Transfer
- Assisted Reproduction Embryo Transfer
- Fertility Embryo Placement
CPT Codes:
- 58974: Embryo transfer, intrauterine
Also known as:
- Hysteroscopy with Fibroid Removal
- Hysteroscopy
- Uterine Fibroid Removal
- Hysteroscopic Myomectomy
- Uterine Polyp Removal
CPT Codes:
- 58561: Hysteroscopy, surgical; with removal of leiomyomata
Does Dr. Hammer accept my insurance?
Dr. Hammer accepts most major insurance plans. Important: Please contact the office before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Hammer accept in Washington, DC?
Dr. Hammer in Washington, DC accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Allied Benefit Systems
Blue Cross Blue Shield of Michigan
Cigna Group
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Health Care Service Corporation
Point32Health
Progyny
UMR Administered Payer
UnitedHealth Group
View All Insurances
Where is Dr. Hammer's office located?
American Society for Reproductive Medicine
726 7th Street SE
Washington, DC 20003
What hospitals are Dr. Hammer affiliated with?
Castle Connolly Top Hospital
This doctor is affiliated with a Castle Connolly Top Hospital.
Dr. Hammer has admitting privileges at the following hospitals:
What is Dr. Hammer's NPI number?A National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Hammer's National Provider Identifier (NPI) number is 1801277736.
What common questions do patients ask about Dr. Hammer?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Hammer