35 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Grenis, Orthopedic Surgeon in Princeton, NJ?
Dr. Michael Grenis, MD is an Orthopedic Surgeon, who primarily practices in Princeton, NJ with 2 additional practice locations. He has been practicing for over 35 years and is board certified by the American Board of Orthopaedic Surgery. Dr. Grenis completed his residency at Nyu Hospitals Center, General Surgery. Dr. Grenis is fluent in English and Spanish, and is currently seeing new patients. Dr. Grenis’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Grenis’s office.
What are Areas of Expertise for Dr. Grenis?
Dr. Michael Grenis, MD is a highly-rated, board-certified Orthopedic Surgeon 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. Grenis empowers patients to confidently navigate their health journey, specializing in Carpal Tunnel Syndrome, Hand & Wrist Surgery, or comprehensive wellness support. Serving the Princeton/NJ community, Dr. Grenis is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Grenis go to medical school and complete their residency?
Fellowship: New York University Medical Center - New York, NY - Hand Surgery | Bellevue Hospital Center
Residency: Nyu Hospitals Center, General Surgery
Medical School: New York Med Coll- Valhalla Ny
Is Dr. Grenis board certified in Orthopedic Surgeon?
Yes, Dr. Michael Grenis, MD is board certified by the American Board of Orthopaedic Surgery , American Board of Orthopaedic Surgery since 1992, American Board of Orthopaedic Surgery since 2013
What languages does Dr. Grenis speak?
Dr. Grenis and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Grenis treat?
As a Orthopedic Surgeon, Dr. Grenis 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. Grenis. 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:
- Left Wrist Radius Fracture
- Right Wrist Radius Fracture
- Broken Finger
- Arm Injuries and Disorder
- Fractures
- Finger Injuries and Disorder
- Broken Left Wrist Bone
- Distal Left Radius Fracture
- Left Wrist Bone Break
- Broken Right Wrist Bone
- Distal Right Radius Fracture
- Right Wrist Bone Break
- Finger Fracture
- Fractured Finger Bone
- Finger Bone Break
ICD-10 Codes:
- S52502A: Unspecified fracture of the lower end of left radius, initial encounter for closed fracture
- S52501A: Unspecified fracture of the lower end of right radius, initial encounter for closed fracture
- S52502D: Unspecified fracture of the lower end of left radius, subsequent encounter for closed fracture with routine healing
- S62616A: Displaced fracture of proximal phalanx of right little finger, initial encounter for closed fracture
Also known as:
- Right Carpal Tunnel Syndrome
- Left Carpal Tunnel Syndrome
- Carpal Tunnel Syndrome
- Right Wrist Nerve Compression
- Right Hand Numbness
- Right CTS
- Left Wrist Nerve Compression
- Left Hand Numbness
- Left CTS
ICD-10 Codes:
- G5601: Carpal tunnel syndrome, right upper limb
- G5602: Carpal tunnel syndrome, left upper limb
Also known as:
- Primary Osteoarthritis in Right Thumb Base
- Osteoarthritis of the left thumb joint
- Osteoarthritis of the right hand
- Osteoarthritis
- Right Thumb Arthritis
- Primary Right First CMC Joint Arthritis
- Right Hand Thumb Base Osteoarthritis
- Degenerative joint disease
- Wear-and-tear arthritis
- Arthrosis
- Joint degeneration
- Degenerative Joint Disease
- Wear-and-Tear Arthritis
- Hand Arthritis
ICD-10 Codes:
- M1811: Unilateral primary osteoarthritis of first carpometacarpal joint, right hand
- M1812: Unilateral primary osteoarthritis of first carpometacarpal joint, left hand
- M19041: Primary osteoarthritis, right hand
- M19042: Primary osteoarthritis, left hand
Also known as:
- Trigger Right Middle Finger
- Trigger Right Ring Finger
- Trigger Left Middle Finger
- Trigger Left Ring Finger
- Finger Injuries and Disorder
- Tendinitis
- Stenosing Tenosynovitis of Right Middle Finger
- Right Middle Finger Tendonitis
- Snapping Right Middle Finger
- Stenosing Tenosynovitis of Right Ring Finger
- Right Ring Finger Tendonitis
- Snapping Right Ring Finger
- Stenosing Tenosynovitis of Left Middle Finger
- Left Middle Finger Tendonitis
- Snapping Left Middle Finger
- Stenosing Tenosynovitis of Left Ring Finger
- Left Ring Finger Tendonitis
- Snapping Left Ring Finger
ICD-10 Codes:
- M65331: Trigger finger, right middle finger
- M65341: Trigger finger, right ring finger
- M65332: Trigger finger, left middle finger
- M65342: Trigger finger, left ring finger
Also known as:
- Wrist Sprain
- Sprains and Strains
- Wrist Injuries and Disorder
- Sprained Wrist
- Wrist Ligament Injury
- Wrist Strain
- Twisted wrist
- Wrist ligament injury
- Wrist strain
- Wrist joint injury
ICD-10 Codes:
- S63501A: Unspecified sprain of right wrist, initial encounter
- S63502A: Unspecified sprain of left wrist, initial encounter
Also known as:
- Lateral Epicondylitis
- Elbow Injuries and Disorder
- Tennis Elbow
- Lateral Epicondylalgia
- Elbow Tendinitis
ICD-10 Codes:
- M7711: Lateral epicondylitis, right elbow
- M7712: Lateral epicondylitis, left elbow
Also known as:
- De Quervain's Tenosynovitis
- Hand Injuries and Disorder
- Tendinitis
- De Quervain's Disease', 'Washerwoman's Sprain
- Radial Styloid Tenosynovitis
ICD-10 Codes:
- M654: Radial styloid tenosynovitis [de Quervain]
Also known as:
- Trigger Thumb
- Finger Injuries and Disorder
- Tendinitis
- Stenosing Tenosynovitis of Thumb
- Thumb Tendonitis
- Thumb Locking
ICD-10 Codes:
- M65311: Trigger thumb, right thumb
Which procedures does Dr. Grenis perform as a Orthopedic Surgeon?
As a Orthopedic Surgeon, procedures performed by an Dr. Michael Grenis may include:
- Allograft Reconstruction
- Ankle Second Opinion
- Arthrodesis
- Arthropathy
- Arthroscopy
- Cartilage Transplantation
- Casting and Splinting
- Deformity Correction (Post Trauma)
For detailed information, please contact Dr. Grenis' office.
Does Dr. Grenis accept my insurance?
Dr. Grenis accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Grenis accept in Princeton, NJ?
Dr. Grenis in Princeton, NJ accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Braven Health
Corporate Services
CVS Health (formerly Aetna)
Express Scripts
Horizon BlueCross BlueShield
Independence Blue Cross
Medicare
Service Employees International Union (SEIU)
UnitedHealthcare
View All Insurances
Where is Dr. Grenis' office located?
What is Dr. Grenis's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Grenis's National Provider Identifier (NPI) number is 1669546834.
What common questions do patients ask about Dr. Grenis?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Grenis
What is Dr. Michael Grenis's specialty?
Dr. Grenis is a Orthopedic Surgeon near Princeton, NJ. An orthopedic surgeon has specialization in preserving, investigating, and restoring the form and function of the extremities, spine, and related structures through medical, surgical, and physical methods. They care for patients with musculoskeletal issues, including congenital deformities, trauma, infections, tumors, metabolic disturbances, and degenerative diseases affecting the spine, hands, feet, knees, hips, shoulders, and elbows in both children and adults. Additionally, orthopedic surgeons address primary and secondary muscular problems and the impact of central or peripheral nervous system lesions on the musculoskeletal system. Contact Dr. Grenis to book an appointment today.
Is this Dr. Michael Grenis affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Grenis is affiliated with Penn Medicine Princeton Medical Center, Capital Health Medical Center - Hopewell which are a Castle Connolly Top Hospitals. 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 Orthopedic Surgeon?
Explore Orthopedic Surgeon 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 Michael Grenis accepting new patients in Princeton, NJ?
Yes, Dr. Michael Grenis is accepting new patients at this time.
Does Dr. Michael Grenis offer online booking?
Please contact Dr. Grenis's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Michael Grenis?
Please contact Dr. Grenis's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Michael Grenis have?
Dr. Michael Grenis is certified by the American Board of Orthopaedic Surgery.
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