Chandra Singh, MD
Chandra Singh, MD is an Addiction Medicine (Internal Medicine) Physician in Brooklyn, NY, registered under NPI 1376567594. 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 451 CLARKSON AVE KINGS COUNTY HOSPITAL BLDG. R 2 EAST, Brooklyn, NY 11203. 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 |
|---|---|---|
| 159232 | NY | Addiction Medicine (Internal Medicine)… primary |
This provider holds licence 159232 issued in NY. 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
- Order And Referring Only - Psychiatry
- PAC ID
- 4981963907
- Enrollment ID
- I20180122000703
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Psychiatry. 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 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
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 | 1376567594 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 27, 2006 |
| Last updated | Apr 6, 2017 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MD |
| Practice address |
451 CLARKSON AVE KINGS COUNTY HOSPITAL BLDG. R 2 EAST Brooklyn, NY 11203 (718) 245-2656 Fax (718) 245-2918 |
| Mailing address |
19901 EPSOM CRSE Hollis, NY 11423 |
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 | 3 | 7 | 6 | 5 | 6 | 7 | 5 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 5 | 6 | 1 | 6 | 5 | 5 | 9 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
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.