Saroj D'souza, M.D.
Saroj D'souza, M.D. is a Molecular Genetic Pathology (Medical Genetics) Physician in Saint Louis, MO, registered under NPI 1699815837. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 544 N NEW BALLAS RD, Saint Louis, MO 63141. 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 |
|---|---|---|
| R2E63 | MO | Molecular Genetic Pathology (Medical… primary |
| R2E63 | MO | Clinical Cytogenetics Physician |
| R2E63 | MO | Clinical Genetics (M.D.) Physician |
| R2E63 | MO | Anatomic Pathology & Clinical Pathology… |
This provider holds licence R2E63 issued in MO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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.
What Molecular Genetic Pathology covers
A board certified subspecialty, the molecular genetic pathologist is expert in the principles, theory and technologies of molecular biology and molecular genetics. This expertise is used to make or confirm diagnoses of Mendelian genetic disorders, of human development, infectious diseases and malignancies and to assess the natural history of those disorders. A molecular genetic pathologist provides information about gene structure, function and alteration, and applies laboratory techniques for diagnosis, treatment and prognosis for individuals with related disorders. NUCC Health Care Provider Taxonomy, code 207SM0001X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207SM0001X | Molecular Genetic Pathology (Medical Genetics) Physician Molecular Genetic Pathology | R2E63 | MO | primary |
| 207SC0300X | Clinical Cytogenetics Physician Clinical Cytogenetics | R2E63 | MO | |
| 207SG0201X | Clinical Genetics (M.D.) Physician Clinical Genetics (M.D.) | R2E63 | MO | |
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician Anatomic Pathology & Clinical Pathology | R2E63 | 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 | 1699815837 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 7, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | M.D. |
| Practice address |
544 N NEW BALLAS RD Saint Louis, MO 63141 (314) 569-1999 Fax (314) 569-4088 |
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 | 9 | 9 | 8 | 1 | 5 | 8 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 9 | 9 | 7 | 1 | 1 | 8 | 6 |
Sum = 73 · next multiple of 10 = 80 · 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.