Susannah Ewing, MSN
Susannah Ewing, MSN is an Obstetrics & Gynecology Nurse Practitioner in San Francisco, CA, registered under NPI 1013926435.
Getting there
The practice address on file is 2356 SUTTER ST FL 6, San Francisco, CA 94115. 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 |
|---|---|---|
| 13717 | CA | Obstetrics & Gynecology Nurse Practitioner primary |
This provider holds licence 13717 issued in CA. 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 - Nurse Practitioner
- PAC ID
- 5092795989
Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Obstetrics & Gynecology covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LX0001X
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 | 1013926435 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 5, 2006 |
| Last updated | Jun 16, 2008 |
| Status | Active |
| Sole proprietor | No |
| Credential | MSN |
| Practice address |
2356 SUTTER ST FL 6 San Francisco, CA 94115 (415) 353-2170 Fax (415) 353-9551 |
| Mailing address |
1635 DIVISADERO ST SUITE 625, BOX 1821 San Francisco, CA 94143 |
| Other identifiers |
00137170
(CA) |
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 | 0 | 1 | 3 | 9 | 2 | 6 | 4 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 2 | 3 | 9 | 2 | 3 | 4 | 6 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.