Orthopaedic Surgical Associates of Lowell, P.C.
NPI 1821820366 · Diagnostic Radiology Physician · Chelmsford, MA
Orthopaedic Surgical Associates of Lowell, P.C. is a Diagnostic Radiology Physician organization in Chelmsford, MA (NPI 1821820366).
Provider details
- NPI number
- 1821820366
- Entity type
- Organization
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Lapp, MD(978) 454-0706
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Chelmsford Imaging
Registry dates
- Enumerated
- 2024-08-14
- Last updated
- 2024-08-14
- Certified
- 2024-08-14
Frequently asked questions
- What is Orthopaedic Surgical Associates of Lowell, P.C.'s NPI number?
- Orthopaedic Surgical Associates of Lowell, P.C.'s National Provider Identifier (NPI) is 1821820366, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Orthopaedic Surgical Associates of Lowell, P.C.?
- Orthopaedic Surgical Associates of Lowell, P.C. is classified in the NPPES registry as Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Orthopaedic Surgical Associates of Lowell, P.C. located?
- Orthopaedic Surgical Associates of Lowell, P.C.'s practice location on file with NPPES is 187 Billerica Rd, Chelmsford, MA 01824-3616.
- What is Orthopaedic Surgical Associates of Lowell, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Orthopaedic Surgical Associates of Lowell, P.C. is (978) 250-1866.
- Who is the authorized official for Orthopaedic Surgical Associates of Lowell, P.C.?
- The authorized official listed on Orthopaedic Surgical Associates of Lowell, P.C.'s NPPES record is Mark Lapp, MD. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Orthopaedic Surgical Associates of Lowell, P.C.'s NPI active?
- Yes — Orthopaedic Surgical Associates of Lowell, P.C.'s NPI (1821820366) is active in the NPPES registry as of the last update on 2024-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.