Mark Dunleavy, MD
Mark Dunleavy, MD is an Adult Reconstructive Orthopaedic Surgery Physician in Princeton, NJ, registered under NPI 1689165318. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 325 PRINCETON AVE, Princeton, NJ 08540. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 25MA12311800 | NJ | Adult Reconstructive Orthopaedic Surgery… primary |
| 25MA12311800 | NJ | Orthopaedic Surgery Physician |
This provider holds licence 25MA12311800 issued in NJ. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Orthopedic Surgery
- PAC ID
- 6608233408
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Indiana | I20230609002247 | Practitioner - Orthopedic Surgery |
| Illinois | I20230719000631 | Practitioner - Orthopedic Surgery |
| New Jersey | I20240716003849 | Practitioner - Orthopedic Surgery |
Medicare enrolment is recorded as approved under the provider type Practitioner - Orthopedic Surgery. There are 3 separate enrolment records across 3 states (IN, IL, NJ). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Adult Reconstructive Orthopaedic Surgery covers
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, adult reconstructive orthopaedic surgeons deal with reconstructive procedures such as joint arthroplasty (i.e., hip and knee), osteotomy, arthroscopy, soft-tissue reconstruction, and a variety of other adult reconstructive surgical procedures. NUCC Health Care Provider Taxonomy, code 207XS0114X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207XS0114X | Adult Reconstructive Orthopaedic Surgery Physician Adult Reconstructive Orthopaedic Surgery | 25MA12311800 | NJ | primary |
| 207X00000X | Orthopaedic Surgery Physician | 25MA12311800 | NJ |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1689165318 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 29, 2018 |
| Last updated | Aug 26, 2024 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
325 PRINCETON AVE Princeton, NJ 08540 (609) 924-8131 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 8 | 9 | 1 | 6 | 5 | 3 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 7 | 9 | 2 | 6 | 1 | 3 | 2 |
Sum = 62 · next multiple of 10 = 70 · check digit = 8 · actual last digit = 8
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.