Ramalingam Selvarajah, MD
Ramalingam Selvarajah, MD is an Adult Medicine Physician in London, OH, registered under NPI 1104912773. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 194 ELM ST, London, OH 43140. 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 |
|---|---|---|
| 35.074317 | OH | Adult Medicine Physician primary |
| 35.074317 | OH | Family Medicine Physician |
This provider holds licence 35.074317 issued in OH. 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 - Family Practice
- PAC ID
- 0244144632
Medicare enrolment is recorded as approved under the provider type Practitioner - Family Practice. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Adult Medicine covers
The NUCC recommends this code not be used. Choose a more appropriate code. NUCC Health Care Provider Taxonomy, code 207QA0505X
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 | |
|---|---|---|---|---|
| 207QA0505X | Adult Medicine Physician Adult Medicine | 35.074317 | OH | primary |
| 207Q00000X | Family Medicine Physician | 35.074317 | OH |
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 | 1104912773 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 4, 2006 |
| Last updated | Jan 15, 2026 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
194 ELM ST London, OH 43140 (740) 845-5500 Fax (740) 845-5502 |
| Mailing address |
700 ACKERMAN RD STE 2120 Columbus, OH 43202 |
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 | 1 | 0 | 4 | 9 | 1 | 2 | 7 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 0 | 4 | 9 | 1 | 4 | 7 | 5 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.