Shannon Mcallister, DO
Shannon Mcallister, DO is a Neonatal-Perinatal Medicine Physician in Saint Louis, MO, registered under NPI 1659830719. 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 1 CHILDRENS PL DIV PED NEWBORN MEDICINE, Saint Louis, MO 63110. 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 |
|---|---|---|
| 2025030021 | MO | Neonatal-Perinatal Medicine Physician primary |
| 2025030021 | MO | Pediatrics Physician |
This provider holds licence 2025030021 issued in MO. 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 - Pediatric Medicine
- PAC ID
- 9436483682
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Ohio | I20240509002852 | Practitioner - Pediatric Medicine |
| Missouri | I20250822000608 | Practitioner - Pediatric Medicine |
| Illinois | I20251216002209 | Practitioner - Osteopathic Manipulative Medicine |
Medicare enrolment is recorded as approved under the provider type Practitioner - Pediatric Medicine. There are 3 separate enrolment records across 3 states (OH, MO, IL). 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 Neonatal-Perinatal Medicine covers
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies. NUCC Health Care Provider Taxonomy, code 2080N0001X
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 | |
|---|---|---|---|---|
| 2080N0001X | Neonatal-Perinatal Medicine Physician Neonatal-Perinatal Medicine | 2025030021 | MO | primary |
| 208000000X | Pediatrics Physician | 2025030021 | MO |
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 | 1659830719 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 18, 2019 |
| Last updated | Aug 6, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | DO |
| Practice address |
1 CHILDRENS PL DIV PED NEWBORN MEDICINE Saint Louis, MO 63110 (314) 454-2683 Fax (314) 454-4633 |
| Mailing address |
PO BOX 7412011 Chicago, IL 60674 |
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 | 6 | 5 | 9 | 8 | 3 | 0 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 1 | 9 | 7 | 3 | 0 | 7 | 2 |
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.