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Edit this profileAt a glance
- 14 Research Pl, North Chelmsford, MA 01863
About Dr. Lapp
Mark A. Lapp, MD is a healthcare provider in North Chelmsford, MA specializing in orthopedic surgery. Mark trained at State University of New York at Stony Brook, School of Medicine, graduating in 1993. Mark is also listed as specializing in orthopaedic surgery of the spine. Medicare claims data shows Mark provided 6,634 services to 1,653 patients. The services billed most often include injection, dexamethasone sodium phosphate, 1 mg, x-ray of lower and sacral spine, 2-3 views, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. This provider record is associated with NPI 1881664977.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (978) 454-0706
- Email not available
Practice Locations
14 RESEARCH PL
North Chelmsford, MA 01863
Conditions Commonly Evaluated or Treated
Within Orthopedic Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Elbow, hand, and wrist
Foot and ankle
Hip
Shoulder
Sports and soft tissue
Trauma and bone
Foot & Ankle
Spine
Procedures & services
Most searched procedures
Evaluation and nonsurgical
Arthroscopy
Foot & Ankle
Foot and ankle
Hand & Wrist
Hand and upper extremity
Injections & Non-Surgical
Injections & pain relief
Joint replacement
- Partial knee replacement
- Reverse shoulder replacement
- Revision joint replacement
- Shoulder replacement
Knee
Shoulder surgery
Trauma & Fractures
Trauma and fixation
Procedures Most Often Billed to Medicare
6,634 services · 1,653 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level | Procedure | 64483 |
212 | More than most peers in Orthopedic Surgery |
| Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level | Procedure | 64484 |
79 | More often than most peers in Orthopedic Surgery |
| Harvest of bone fragment for spine bone graft | Procedure | 20937 |
27 | More often than most peers in Orthopedic Surgery |
| Insertion of cage or mesh device to spine bone and disc space during spine fusion | Procedure | 22853 |
25 | Less often than most peers in Orthopedic Surgery |
| Fusion of additional segment of spine | Procedure | 22614 |
25 | Less often than most peers in Orthopedic Surgery |
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
22 | As often as other peers in Orthopedic Surgery |
| Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment | Procedure | 63047 |
20 | As often as other peers in Orthopedic Surgery |
| Partial removal of bone of single segment of spine in lower back with release of spinal cord and/or nerves during fusion of spine in lower back | Procedure | 63052 |
18 | As often as other peers in Orthopedic Surgery |
| Fusion of spine in lower back with partial removal of spine bone and disc | Procedure | 22633 |
18 | As often as other peers in Orthopedic Surgery |
| Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment | Procedure | 63048 |
15 | Less often than most peers in Orthopedic Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other orthopedic surgeons at this location 7
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other orthopedic surgeons in North Chelmsford 2
Same specialty, same city.
More connections — 17 related providers in 3 groups
Trained at State University of New York at Stony Brook, School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1993 at State University of New York at Stony Brook, School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level 1
Providers in MA who bill this service to Medicare most often.
Common questions
What is Dr. Lapp's specialty?
Dr. Lapp is an orthopedic surgeon in North Chelmsford, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopedic Surgery”.
NPI registry
Where can I find Dr. Lapp?
Dr. Lapp is listed at 14 Research Pl, North Chelmsford, MA 01863. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Lapp?
The number on file is (978) 454-0706. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Lapp?
Dr. Lapp's National Provider Identifier is 1881664977. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Lapp's medical education?
Dr. Lapp attended State University of New York at Stony Brook, School of Medicine, graduating in 1993. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Lapp have?
Dr. Lapp has 33 years experience. Calculated from a graduation year of 1993, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Lapp known for?
According to Medicare billing data, Dr. Lapp performs procedures including injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level, injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level and harvest of bone fragment for spine bone graft; reads or performs imaging such as x-ray of lower and sacral spine, 2-3 views and x-ray of upper spine, 2-3 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Lapp's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lapp. If this is you, claiming it is free.
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