Daniel Ryu, MD
Daniel Ryu, MD is a Preventive Medicine/Occupational Environmental Medicine Physician in Cleveland, OH, registered under NPI 1972593309.
Getting there
The practice address on file is 2322 E 22ND ST SVCH OCCUPATIONAL MEDICINE, 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 |
|---|---|---|
| 35-067499 | OH | Preventive Medicine/Occupational… primary |
This provider holds licence 35-067499 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 - General Practice
- PAC ID
- 8426000332
- Enrollment ID
- I20050218000085
Medicare enrolment is recorded as approved under the provider type Practitioner - General Practice. 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 Preventive Medicine/Occupational Environmental Medicine covers
A preventive medicine physician who specializes in preventive medicine/occupational-environmental medicine, which is focused on protecting the population from occupational and environmental conditions. NUCC Health Care Provider Taxonomy, code 2083P0500X
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 | 1972593309 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 26, 2005 |
| Last updated | Jan 11, 2008 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
2322 E 22ND ST SVCH OCCUPATIONAL MEDICINE Cleveland, OH 44115 (216) 363-2691 Fax (216) 694-4665 |
| Mailing address |
6935 TREELINE DR STE J Brecksville, OH 44141 |
| Other identifiers |
2546187
· Medicaid (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 | 9 | 7 | 2 | 5 | 9 | 3 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 5 | 2 | 1 | 9 | 6 | 3 | 0 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.