Mark A. Lapp, MD
Orthopaedic Surgery of the Spine Physician · North Chelmsford, MA
Mark A. Lapp, MD is an orthopaedic surgery of the spine physician with a practice address in North Chelmsford, Massachusetts, and NPI 1881664977, issued on Jan 23, 2006. Check the license (Massachusetts 160583, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark A. Lapp
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery of the Spine Physician 207XS0117X
- License numbers
- 160583 MA
12168 NH
Self-reported in NPPES; status is on the state search - Practice location
- 14 Research PL, North Chelmsford, MA 01863
- Phone
- (978) 454-0706
- Enumerated
- Jan 23, 2006
- Record last updated
- Feb 13, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (978) 970-0454
- Medicaid IDs
- 30203450 NH
3200710 MA - Medicare enrollment
- Enrolled (PECOS I20040330000507); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery of the spine physician records → All 36 in Massachusetts → Look up another NPI →
Also registered at 14 Research PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Alter, MDOrthopaedic Hand Surgery Physician1740250406
- Atul Bhat, MDPhysical Medicine & Rehabilitation Physician1144290222
- Chris Cary, MDInterventional Pain Medicine Physician1326466525
- Rylee Coutu, FNP-BCFamily Nurse Practitioner1912646118
- Allison Devine, PA-C, ATCPhysician Assistant1699117697
- Bryan Dolan, D.O.Cardiovascular Disease Physician1801259296
Verify Mark A. Lapp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 160583Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average orthopaedic surgery of the spine physician in 2024
105 Medicare Part D claims for 78 beneficiaries, against an average of 381 among the 1,714 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Diclofenac Sodium33 claims
- Gabapentin21 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $8,535.30
3 payments; by number, the most common kind was travel and lodging; the largest payer was Carlsmed, Inc. The 1,726 providers of this specialty with any payment received $34,071.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Orthopaedic Surgical Associates OF Lowell, P.C.North Chelmsford, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark A. Lapp among 36 orthopaedic surgery of the spine physician records in Massachusetts
Mark A. Lapp, MD is one of 36 orthopaedic surgery of the spine physician records with a practice address in Massachusetts. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 50% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1993 · median 2004 among the 27 with a school on file
- Record last updated2015 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0117X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery of the Spine Physician providers in Massachusetts
There are 36 orthopaedic surgery of the spine physician records in Massachusetts.
All 36 in Massachusetts → Every provider in North Chelmsford → Orthopaedic Surgery of the Spine Physician nationwide →
The 8 orthopaedic surgery of the spine physician records with the nearest ZIP codes
- Lawrence Johnson, M.D.North Chelmsford, MA 018631225003049
- Nikhil Thakur, M.D.North Andover, MA 018451871710756
- Bernard Pfeifer, MDBurlington, MA 018051720186422
- Richard Ozuna, M.D.Peabody, MA 019601104804665
- Jeremy Shore, M.D.Peabody, MA 019601598743197
- Mitchell Hardenbrook, MDHopedale, MA 017471689636037
- Andrew Moon, MDHopedale, MA 017471871159848
- Sean Kelly, PA-CDedham, MA 020261346973880
Common questions
What is Mark A. Lapp, MD's NPI number?
Mark A. Lapp, MD's National Provider Identifier (NPI) is 1881664977, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Lapp, MD located?
The NPPES record lists a practice address at 14 Research PL, North Chelmsford, MA, 01863. Phone: (978) 454-0706. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Lapp, MD's license?
NPPES lists Massachusetts license number 160583, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark A. Lapp, MD prescribe under Medicare Part D?
In 2024, Mark A. Lapp, MD had 105 Medicare Part D claims for 78 beneficiaries; the average among orthopaedic surgery of the spine physician prescribers was 381. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.