35 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Greenwald, Colon & Rectal Surgeon (Proctologist) in Great Neck, NY?
Dr. Marc Greenwald, MD is a Colon & Rectal Surgeon (Proctologist), who primarily practices in Great Neck, NY with 1 additional practice location. He has been practicing for over 35 years and is board certified. Dr. Greenwald graduated from Albert Einstein College of Medicine and completed his residency at Montefiore Medical Center. Dr. Greenwald is fluent in English and Spanish, and is currently seeing new patients. Dr. Greenwald’s practice accepts Medicaid, Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Greenwald’s office at (516) 482-8657.
What are Areas of Expertise for Dr. Greenwald?
Dr. Marc Greenwald, MD is a highly-rated, board-certified Colon & Rectal Surgeon (Proctologist) known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Greenwald empowers patients to confidently navigate their health journey, specializing in Anal Cancer, Anorectal Disorders, Colon & Rectal Cancer & Surgery, Colon & Rectal Cancer-Familial Polyposis, Colon Cancer Screening, Colonoscopy, Crohn's Disease, Diverticulitis, Fistula-Complex, Hemorrhoids, Laparoscopic Surgery, Telemedicine, Ulcerative Colitis, or comprehensive wellness support. Serving the Great Neck/NY community, Dr. Greenwald is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Greenwald go to medical school and complete their residency?
Fellowship: St Francis Hospital
Residency: Montefiore Medical Center
Medical School: Albert Einstein College of Medicine
Is Dr. Greenwald board certified as a Colon & Rectal Surgeon (Proctologist)?
Yes, Dr. Marc Greenwald, MD is board certified by the American Board of Colon & Rectal Surgery , American Board of Surgery
What languages does Dr. Greenwald speak?
Dr. Greenwald and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Greenwald treat?
As a Colon & Rectal Surgeon (Proctologist), Dr. Greenwald 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. Greenwald. 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.
Also known as:
- Hemorrhoids
- Third Degree Hemorrhoids
- Second Degree Hemorrhoids
- Hemorrhoidal Skin Tags
- Perianal Blood Clot
- Anal Disorder
- Piles
- Anal veins
- Swollen rectal veins
- Prolapsed hemorrhoids
- Grade 3 hemorrhoids
- Severe hemorrhoids
- Internal hemorrhoids that prolapse
- Grade 2 hemorrhoids
- Moderate hemorrhoids
- Anal skin tags
- Perianal skin tags
- Leftover hemorrhoid skin
- Thrombosed Hemorrhoid
- External Hemorrhoid Clot
- Blood Clot near Anus
ICD-10 Codes:
- K648: Other hemorrhoids
- K642: Third degree hemorrhoids
- K641: Second degree hemorrhoids
- K644: Residual hemorrhoidal skin tags
- K645: Perianal venous thrombosis
Also known as:
- Large Intestine Diverticulitis
- Large Intestine Diverticulitis with Perforation and Abscess
- Intestine Diverticulitis
- Diverticulosis and Diverticulitis
- Abscess
- Inflamed Colon Diverticula
- Colon Diverticular Inflammation
- Inflamed Colon Diverticula with Abscess
- Perforated Large Bowel Diverticulitis
- Inflamed Bowel Diverticula
- Bowel Diverticular Inflammation
ICD-10 Codes:
- K5732: Diverticulitis of large intestine without perforation or abscess without bleeding
- K5720: Diverticulitis of large intestine with perforation and abscess without bleeding
- K5792: Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding
Also known as:
- Anal Fissure
- Anal Disorder
- Rectal Tear
- Fissure in Anus
- Perianal Fissure
ICD-10 Codes:
- K602: Anal fissure, unspecified
Also known as:
- Colorectal Cancer
- Rectal cancer
- Colon cancer
- Bowel cancer
- Malignant neoplasm of rectum
ICD-10 Codes:
- C20: Malignant neoplasm of rectum
Also known as:
- Rectal Bleeding
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Anal Bleeding
- Blood in Stool
- Lower GI Bleed
ICD-10 Codes:
- K625: Hemorrhage of anus and rectum
Also known as:
- Digestive System Surgery Aftercare
- After Surgery
- Post-gastrointestinal surgery care
- Stomach surgery aftercare
- Bowel surgery recovery
ICD-10 Codes:
- Z48815: Encounter for surgical aftercare following surgery on the digestive system
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Other Pre-Procedure Examination
- Various pre-op checks
- Miscellaneous pre-surgery exams
- Other pre-treatment assessments
ICD-10 Codes:
- Z01818: Encounter for other preprocedural examination
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal polyps
- Bowel polyps
- Intestinal polyps
ICD-10 Codes:
- K635: Polyp of colon
Also known as:
- Rectal Prolapse
- Pelvic Floor Disorder
- Rectal Disorder
- Protruding Rectum
- Bowel Prolapse
- Rectal Eversion
ICD-10 Codes:
- K623: Rectal prolapse
Also known as:
- Anal Fistula
- Anal Disorder
- Fistulas
- Perianal Fistula
- Fistula-in-Ano
- Abnormal Anal Tract
ICD-10 Codes:
- K603: Anal fistula
Also known as:
- Cancer Surgery Aftercare
- After Surgery
- Cancer
- Post-cancer surgery care
- Oncology aftercare
- Cancer recovery follow-up
ICD-10 Codes:
- Z483: Aftercare following surgery for neoplasm
Also known as:
- Other Anal and Rectal Condition
- Anal Disorder
- Rectal Disorder
- Proctitis
- Anal Disorders
- Rectal Disorders
ICD-10 Codes:
- K6289: Other specified diseases of anus and rectum
What procedures does Dr. Greenwald perform?
As a Colon & Rectal Surgeon (Proctologist), Dr. Greenwald 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. Greenwald. 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.
Also known as:
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy with Tissue Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible colonoscopy with EMR
- Endoscopic mucosal resection (colon)
- Colon polyp removal during colonoscopy
CPT Codes:
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45390: Colonoscopy, flexible; with endoscopic mucosal resection
Also known as:
- Laparoscopic Colon Mobilization
- Laparoscopic Partial Colon Removal
- Splenic Flexure Mobilization
- Laparoscopic Colectomy Assist
- Colon Take-down Surgery
- Minimally invasive colectomy
- Laparoscopic bowel resection
- Keyhole colon surgery
CPT Codes:
- 44213: Laparoscopy, surgical, mobilization (take-down) of splenic flexure performed in conjunction with partial colectomy (List separately in addition to primary procedure)
- 44207: Laparoscopy, surgical; colectomy, partial, with anastomosis, with coloproctostomy (low pelvic anastomosis)
Also known as:
- Anoscopy (Diagnostic)
- Anoscopy
- Anal Canal Exam
- Rectal Scope Exam
- Anus Diagnostic Procedure
CPT Codes:
- 46600: Anoscopy; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Rectal Prolapse Repair
- Proctoplasty
- Mucosal Prolapse Repair
- Rectal Wall Repair
CPT Codes:
- 45505: Proctoplasty; for prolapse of mucous membrane
Also known as:
- Anal Sphincter Nerve Block
- Internal Anal Sphincter Chemodenervation
- Anal Sphincter Injection
- Botox for Anal Fissure
- Chemical Denervation of Anal Muscle
CPT Codes:
- 46505: Chemodenervation of internal anal sphincter
Also known as:
- Removal of Multiple Hemorrhoids
- Hemorrhoidectomy
- Internal and External Hemorrhoid Surgery
- Piles Removal Surgery
CPT Codes:
- 46260: Hemorrhoidectomy, internal and external, 2 or more columns/groups;
Also known as:
- Omental Flap Surgery
- Intra-abdominal Omental Transfer
- Omentum Flap
- Abdominal Tissue Flap
CPT Codes:
- 49905: Omental flap, intra-abdominal (List separately in addition to code for primary procedure)
Also known as:
- Flexible Sigmoidoscopy
- Colorectal Cancer Screening Tests
- Sigmoidoscopy
- Lower colon exam
- Flexible colon scope
- Rectum and lower colon check
CPT Codes:
- 45330: Sigmoidoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Anal Fissure Removal with Muscle Release
- Fissurectomy
- Sphincterotomy
- Anal Fissure Repair
- Chronic Fissure Surgery
CPT Codes:
- 46200: Fissurectomy, including sphincterotomy, when performed
Does Dr. Greenwald accept my insurance?
Dr. Greenwald accepts most major insurance plans. Important: Please call our office at (516) 482-8657 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Greenwald accept in Great Neck, NY?
Dr. Greenwald in Great Neck, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Allied Benefit Systems
Corporate Services
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
HealthComp
MagnaCare Rx
Medicare
Service Employees International Union (SEIU)
State of Tennessee
View All Insurances
Where is Dr. Greenwald's office located?
Dr. Marc Greenwald's Primary Practice
310 E Shore Rd Ste 203
Great Neck, NY 11023
(516) 482-8657
What is Dr. Greenwald's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Greenwald's National Provider Identifier (NPI) number is 1174618557.
What common questions do patients ask about Dr. Greenwald?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Greenwald
What is Dr. Marc Greenwald's specialty?
Dr. Greenwald is a Colon & Rectal Surgeon (Proctologist) near Great Neck, NY. A colon and rectal surgeon possesses the expertise to diagnose and treat a variety of ailments affecting the intestinal tract, including the colon, rectum, anal canal, and perianal area, through both medical and surgical interventions. Furthermore, this professional also engages with other organs and tissues, including the liver, urinary system, and female reproductive system, that are relevant to primary intestinal disorders. Contact Dr. Greenwald to book an appointment today.
Is this Dr. Marc Greenwald affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Greenwald is affiliated with North Shore University Hospital which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Colon & Rectal Surgeon (Proctologist)?
Explore Colon & Rectal Surgeon (Proctologist) with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Marc Greenwald accepting new patients in Great Neck, NY?
Yes, Dr. Marc Greenwald is accepting new patients at this time.
Does Dr. Marc Greenwald offer online booking?
Please contact Dr. Greenwald's office at (516) 482-8657 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Marc Greenwald?
Please contact Dr. Greenwald's office at (516) 482-8657 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Marc Greenwald have?
Dr. Marc Greenwald is certified by the American Board of Colon & Rectal Surgery and American Board of Surgery.
Other Colon & Rectal Surgeon (Proctologist) Near Great Neck, NY
Colon & Rectal Surgeon (Proctologist)
Accepting patientsDr. Robert Dring, MD is a Colon & Rectal Surgeon (Proctologist), who primarily practices in Great Neck, NY with 1 additional practice location. He has been practicing for over 21 years and is board certified.
Great Neck, NY
Surgeon
Accepting patientsDr. Andrea Zimmern, MD is a Surgeon, who primarily practices in Great Neck, NY with 2 additional practice locations. She is board certified.
Great Neck, NY
DS
Colon & Rectal Surgeon (Proctologist)
Accepting patientsDr. David Schwartzberg, MD is a Colon & Rectal Surgeon (Proctologist), who primarily practices in Great Neck, NY with 2 additional practice locations.
Great Neck, NY