Jeffrey Overdyke, MD
Jeffrey Overdyke, MD is a Geriatric Psychiatry Physician in Shreveport, LA, registered under NPI 1942414552.
Getting there
The practice address on file is 2508 BERT KOUNS LOOP SUITE 303, Shreveport, LA 71118. 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 |
|---|---|---|
| 203179 | LA | Geriatric Psychiatry Physician primary |
This provider holds licence 203179 issued in LA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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.
What Geriatric Psychiatry covers
Geriatric Psychiatry is a subspecialty with psychiatric expertise in prevention, evaluation, diagnosis and treatment of mental and emotional disorders in the elderly, and improvement of psychiatric care for healthy and ill elderly patients. NUCC Health Care Provider Taxonomy, code 2084P0805X
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 | 1942414552 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 10, 2007 |
| Last updated | Nov 8, 2010 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
2508 BERT KOUNS LOOP SUITE 303 Shreveport, LA 71118 (318) 212-5850 Fax (318) 212-5855 |
| Mailing address |
1202 LOUISIANA AVE Shreveport, LA 71101 |
| Other identifiers |
4M560DL73
· MEDICARE PTAN (LA) 1810975 (LA) |
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 | 4 | 2 | 4 | 1 | 4 | 5 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 8 | 2 | 8 | 1 | 8 | 5 | 1 |
Sum = 68 · next multiple of 10 = 70 · check digit = 2 · actual last digit = 2
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.