Karen Walker, M.D.
Karen Walker, M.D. is a Gynecology Physician in Ypsilanti, MI, registered under NPI 1417049677.
Getting there
The practice address on file is 4936 W CLARK RD SUITE 100, Ypsilanti, MI 48197. 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 |
|---|---|---|
| 4301050682 | MI | Gynecology Physician primary |
This provider holds licence 4301050682 issued in MI. 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 - Obstetrics/gynecology
- PAC ID
- 8022037050
- Enrollment ID
- I20051118000094
Medicare enrolment is recorded as approved under the provider type Practitioner - Obstetrics/gynecology. 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 Gynecology covers
A physician who specializes in diagnosis, treatment, and management of patients with gynecologic conditions. NUCC Health Care Provider Taxonomy, code 207VG0400X
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 | 1417049677 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 28, 2006 |
| Last updated | Oct 12, 2016 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
4936 W CLARK RD SUITE 100 Ypsilanti, MI 48197 (734) 434-6200 Fax (734) 434-7373 |
| Mailing address |
24 FRANK LLOYD WRIGHT DR PO BOX 0446 LOBBY J Ann Arbor, MI 48105 |
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 | 4 | 1 | 7 | 0 | 4 | 9 | 6 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 2 | 7 | 0 | 4 | 9 | 6 | 5 |
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.