Sean Meehan, D.M.D.
Sean Meehan, D.M.D. is a provider specialising in Oral Medicine Dentistry in Philadelphia, PA, registered under NPI 1740281724. 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 240 S 40TH ST, Philadelphia, PA 19104. 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 |
|---|---|---|
| DS-028464-L | PA | Oral Medicine Dentistry primary |
| 12911 | NC | General Practice Dentistry |
| 3019-97 | MS | General Practice Dentistry |
| DS-028464-L | PA | General Practice Dentistry |
Licences are recorded in 3 states: PA, NC, MS. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
Licensed in 3 states
This provider holds licences in 3 states: Mississippi, North Carolina and Pennsylvania. The practice address on file is in Philadelphia, PA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- DS-028464-L
- Specialty
- Oral Medicine Dentistry
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Oral Medicine covers
Oral Medicine is the specialty of dentistry responsible for the oral health care of medically complex patients and for the diagnosis and management of medically related diseases, disorders and conditions affecting the oral and maxillofacial region. Oral Medicine specialists have training and expertise in the diagnosis and management of oral and mucosal diseases, medical management of maxillofacial pathologies from hematology and oncology, organ transplant services, autoimmune disorders, including acute and chronic pain conditions of oral & maxillofacial region. Oral Medicine specialists co-manage oral and maxillofacial conditions and diseases in collaboration with medical specialists and other dentists in hospitals and outpatient medical clinics, particularly in the management of patients with complex medical conditions requiring multidisciplinary healthcare intervention. NUCC Health Care Provider Taxonomy, code 125Q00000X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 125Q00000X | Oral Medicine Dentistry Oral Medicine | DS-028464-L | PA | primary |
| 1223G0001X | General Practice Dentistry General Practice | 12911 | NC | |
| 1223G0001X | General Practice Dentistry General Practice | 3019-97 | MS | |
| 1223G0001X | General Practice Dentistry General Practice | DS-028464-L | PA |
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 | 1740281724 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 2, 2005 |
| Last updated | Apr 26, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | D.M.D. |
| Practice address |
240 S 40TH ST Philadelphia, PA 19104 (215) 746-7982 |
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 | 7 | 4 | 0 | 2 | 8 | 1 | 7 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 8 | 0 | 4 | 8 | 2 | 7 | 4 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
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.