Theodore Parran, MD
Theodore Parran, MD is an Addiction Medicine (Internal Medicine) Physician in Cleveland, OH, registered under NPI 1811974348. 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 2351 E 22ND ST, Cleveland, OH 44115. 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 |
|---|---|---|
| 35056916 | OH | Addiction Medicine (Internal Medicine)… primary |
| 35.056916 | OH | Addiction Medicine (Psychiatry &… |
This provider holds licence 35056916 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 - Addiction Medicine
- PAC ID
- 4385819846
Medicare enrolment is recorded as approved under the provider type Practitioner - Addiction Medicine. 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 Addiction Medicine covers
An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine. NUCC Health Care Provider Taxonomy, code 207RA0401X
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 | |
|---|---|---|---|---|
| 207RA0401X | Addiction Medicine (Internal Medicine) Physician Addiction Medicine | 35056916 | OH | primary |
| 2084A0401X | Addiction Medicine (Psychiatry & Neurology) Physician Addiction Medicine | 35.056916 | 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 | 1811974348 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 27, 2005 |
| Last updated | Apr 17, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
2351 E 22ND ST Cleveland, OH 44115 (216) 363-2580 Fax (216) 363-2575 |
| Other identifiers |
000000135960
· ANTHEM (OH) 0704116 (OH) 110142214 · PALMETTO GBA RETIRED (OH) |
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 | 8 | 1 | 1 | 9 | 7 | 4 | 3 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 2 | 1 | 9 | 7 | 8 | 3 | 8 |
Sum = 72 · next multiple of 10 = 80 · 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.