Olachi Mezu-ndubuisi, MD. OD.
Olachi Mezu-ndubuisi, MD. OD. is a Neonatal-Perinatal Medicine Physician in Fitchburg, WI, registered under NPI 1821057647. This provider registers 10 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 5767 WILSHIRE DR, Fitchburg, WI 53711. 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 |
|---|---|---|
| D0064730 | MD | Neonatal-Perinatal Medicine Physician primary |
| TA1855 | MD | Optometrist |
| TA1855 | MD | Corneal and Contact Management Optometrist |
| TA1855 | MD | Low Vision Rehabilitation Optometrist |
| TA1855 | MD | Pediatric Optometrist |
| TA1855 | MD | Sports Vision Optometrist |
| TA1855 | MD | Vision Therapy Optometrist |
| TA1855 | MD | Occupational Vision Optometrist |
| D0064730 | MD | Pediatrics Physician |
| 316647 | NY | Physician Assistant |
Licences are recorded in 2 states: MD, NY. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: Maryland and New York. Multi-state licensure often means the provider works near a state border, covers more than one office, or delivers care 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
- D0064730
- Specialty
- Neonatal-Perinatal Medicine Physician
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 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 10 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 | D0064730 | MD | primary |
| 152W00000X | Optometrist | TA1855 | MD | |
| 152WC0802X | Corneal and Contact Management Optometrist Corneal and Contact Management | TA1855 | MD | |
| 152WL0500X | Low Vision Rehabilitation Optometrist Low Vision Rehabilitation | TA1855 | MD | |
| 152WP0200X | Pediatric Optometrist Pediatrics | TA1855 | MD | |
| 152WS0006X | Sports Vision Optometrist Sports Vision | TA1855 | MD | |
| 152WV0400X | Vision Therapy Optometrist Vision Therapy | TA1855 | MD | |
| 152WX0102X | Occupational Vision Optometrist Occupational Vision | TA1855 | MD | |
| 208000000X | Pediatrics Physician | D0064730 | MD | |
| 363A00000X | Physician Assistant | 316647 | 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 | 1821057647 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 21, 2006 |
| Last updated | Jul 17, 2023 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD. OD. |
| Practice address |
5767 WILSHIRE DR Fitchburg, WI 53711 (410) 905-7090 |
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 | 8 | 2 | 1 | 0 | 5 | 7 | 6 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 4 | 1 | 0 | 5 | 5 | 6 | 8 |
Sum = 63 · next multiple of 10 = 70 · check digit = 7 · actual last digit = 7
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.