Chad Elkin, M.D.
Chad Elkin, M.D. is an Addiction Medicine (Preventive Medicine) Physician in Brentwood, TN, registered under NPI 1497970636. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 5511 VIRGINIA WAY STE 300, Brentwood, TN 37027. 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 |
|---|---|---|
| 44447 | TN | Addiction Medicine (Preventive Medicine)… primary |
| 024-02183 | NC | Addiction Medicine (Preventive Medicine)… |
| ME169221 | FL | Addiction Medicine (Preventive Medicine)… |
| 44447 | TN | Internal Medicine Physician |
| 44447 | TN | Hospitalist Physician |
| TP009 | KY | Addiction Medicine (Preventive Medicine)… |
| 101278350 | VA | Addiction Medicine (Preventive Medicine)… |
| V3288 | TX | Addiction Medicine (Preventive Medicine)… |
Licences are recorded in 6 states: TN, NC, FL, KY, VA, TX. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Addiction Medicine
- PAC ID
- 1850438102
Enrolled in Medicare 5 times, across 5 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Tennessee | I20091020000159 | Practitioner - Addiction Medicine |
| Virginia | I20230707002757 | Practitioner - Addiction Medicine |
| Texas | I20250210001109 | Practitioner - Internal Medicine |
| Florida | I20250729001271 | Practitioner - Addiction Medicine |
| North Carolina | I20250830000734 | Practitioner - Addiction Medicine |
Medicare enrolment is recorded as approved under the provider type Practitioner - Addiction Medicine. There are 5 separate enrolment records across 5 states (TN, VA, TX, FL, NC). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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.
Licensed in 6 states
This provider holds licences in 6 states: Florida, Kentucky, North Carolina, Tennessee, Texas and Virginia. The practice address on file is in Brentwood, TN, 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
- 024-02183
- Specialty
- Addiction Medicine (Preventive…
- Licence
- 44447
- Specialty
- Addiction Medicine (Preventive…
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 Addiction Medicine covers
A physician engaged in the subspecialty practice of Addiction Medicine who specializes in the prevention, evaluation, diagnosis, treatment, and recovery of persons with the disease of addiction. NUCC Health Care Provider Taxonomy, code 2083A0300X
All registered taxonomy codes
This provider registers 8 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2083A0300X | Addiction Medicine (Preventive Medicine) Physician Addiction Medicine | 44447 | TN | primary |
| 2083A0300X | Addiction Medicine (Preventive Medicine) Physician Addiction Medicine | 024-02183 | NC | |
| 2083A0300X | Addiction Medicine (Preventive Medicine) Physician Addiction Medicine | ME169221 | FL | |
| 207R00000X | Internal Medicine Physician | 44447 | TN | |
| 208M00000X | Hospitalist Physician | 44447 | TN | |
| 2083A0300X | Addiction Medicine (Preventive Medicine) Physician Addiction Medicine | TP009 | KY | |
| 2083A0300X | Addiction Medicine (Preventive Medicine) Physician Addiction Medicine | 101278350 | VA | |
| 2083A0300X | Addiction Medicine (Preventive Medicine) Physician Addiction Medicine | V3288 | TX |
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 | 1497970636 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 14, 2007 |
| Last updated | May 1, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
5511 VIRGINIA WAY STE 300 Brentwood, TN 37027 (615) 994-1000 Fax (615) 994-0100 |
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 | 4 | 9 | 7 | 9 | 7 | 0 | 6 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 9 | 7 | 9 | 7 | 0 | 6 | 6 |
Sum = 74 · next multiple of 10 = 80 · check digit = 6 · actual last digit = 6
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.