Susan Steigerwalt, MD
Susan Steigerwalt, MD is a Nephrology Physician in Ann Arbor, MI, registered under NPI 1376545913. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 1500 EAST MEDICAL CENTER DRIVE 3RD FLOOR CARDIOVASCULAR CENTER, Ann Arbor, MI 48109. 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 |
|---|---|---|
| 4301041075 | MI | Nephrology Physician primary |
| 4301041075 | MI | Cardiovascular Disease Physician |
| 4301041075 | MI | Hypertension Specialist Physician |
| 4301041075 | MI | Internal Medicine Physician |
This provider holds licence 4301041075 issued in MI. 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 Nephrology covers
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation. NUCC Health Care Provider Taxonomy, code 207RN0300X
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 | |
|---|---|---|---|---|
| 207RN0300X | Nephrology Physician Nephrology | 4301041075 | MI | primary |
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | 4301041075 | MI | |
| 207RH0005X | Hypertension Specialist Physician Hypertension Specialist | 4301041075 | MI | |
| 207R00000X | Internal Medicine Physician | 4301041075 | MI |
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 | 1376545913 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 12, 2005 |
| Last updated | Dec 11, 2015 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
1500 EAST MEDICAL CENTER DRIVE 3RD FLOOR CARDIOVASCULAR CENTER Ann Arbor, MI 48109 (888) 287-1082 |
| Mailing address |
700 KMS PLACE Ann Arbor, MI 48108 |
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 | 4 | 5 | 9 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 5 | 6 | 1 | 4 | 1 | 9 | 2 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.