Alexis Maddocks, M.D.
Alexis Maddocks, M.D. is a Pediatric Radiology Physician in New York, NY, registered under NPI 1992930390. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 630 W 168TH ST # MC28, New York, NY 10032. 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 |
|---|---|---|
| 284380-1 | NY | Pediatric Radiology Physician primary |
| 284380 | NY | Diagnostic Radiology Physician |
This provider holds licence 284380-1 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
- Practitioner - Diagnostic Radiology
- PAC ID
- 7416236708
Enrolled in Medicare 4 times, across 4 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| New York | I20161109000199 | Practitioner - Diagnostic Radiology |
| Florida | I20230807003091 | Practitioner - Diagnostic Radiology |
| New Jersey | I20230810000205 | Practitioner - Diagnostic Radiology |
| Louisiana | I20240515004456 | Practitioner - Diagnostic Radiology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Diagnostic Radiology. There are 4 separate enrolment records across 4 states (NY, FL, NJ, LA). 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.
What Pediatric Radiology covers
A radiologist who is proficient in all forms of diagnostic imaging as it pertains to the treatment of diseases in the newborn, infant, child and adolescent. This specialist has knowledge of both imaging and interventional procedures related to the care and management of diseases of children. A pediatric radiologist must be highly knowledgeable of all organ systems as they relate to growth and development, congenital malformations, diseases peculiar to infants and children and diseases that begin in childhood but cause substantial residual impairment in adulthood. NUCC Health Care Provider Taxonomy, code 2085P0229X
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 | |
|---|---|---|---|---|
| 2085P0229X | Pediatric Radiology Physician Pediatric Radiology | 284380-1 | NY | primary |
| 2085R0202X | Diagnostic Radiology Physician Diagnostic Radiology | 284380 | NY |
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 | 1992930390 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 28, 2009 |
| Last updated | May 9, 2017 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
630 W 168TH ST # MC28 New York, NY 10032 (212) 305-1948 |
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 | 9 | 2 | 9 | 3 | 0 | 3 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 9 | 2 | 9 | 3 | 0 | 3 | 9 |
Sum = 70 · next multiple of 10 = 70 · check digit = 0 · actual last digit = 0
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.