Barbara Williamson, NMW 956, NP6576, RN3
Barbara Williamson, NMW 956, NP6576, RN3 is a provider specialising in Advanced Practice Midwife in Richmond, CA, registered under NPI 1306943451. 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 1030 NEVIN AVE, Richmond, CA 94801. 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 |
|---|---|---|
| NMW956 | CA | Advanced Practice Midwife primary |
| 321816 | CA | Ambulatory Women's Health Care Registered… |
| 6576 | CA | Women's Health Nurse Practitioner |
| 956 | CA | Advanced Practice Midwife |
| NP6576 | CA | Women's Health Clinical Nurse Specialist |
This provider holds licence NMW956 issued in CA. 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 Advanced Practice Midwife covers
Advanced practice midwifery encompasses the independent provision of care during pregnancy, childbirth, and the postpartum period; sexual and reproductive health; gynecologic health; and family planning services, including preconception care. Midwives also provide primary care for individuals from adolescence throughout the lifespan as well as care for the healthy newborn during the first 28 days of life. Midwives provide initial and ongoing comprehensive assessment, diagnosis, and treatment. Midwifery care includes health promotion, disease prevention, risk assessment and management, and individualized wellness education and counseling. NUCC Health Care Provider Taxonomy, code 367A00000X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 367A00000X | Advanced Practice Midwife | NMW956 | CA | primary |
| 163WW0101X | Ambulatory Women's Health Care Registered Nurse Women's Health Care, Ambulatory | 321816 | CA | |
| 363LW0102X | Women's Health Nurse Practitioner Women's Health | 6576 | CA | |
| 367A00000X | Advanced Practice Midwife | 956 | CA | |
| 364SW0102X | Women's Health Clinical Nurse Specialist Women's Health | NP6576 | CA |
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 | 1306943451 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 20, 2006 |
| Last updated | Nov 8, 2012 |
| Status | Active |
| Sole proprietor | No |
| Credential | NMW 956, NP6576, RN3 |
| Practice address |
1030 NEVIN AVE Richmond, CA 94801 (510) 215-5001 Fax (510) 215-1115 |
| Mailing address |
1179 N. MCDOWELL BLVD Petaluma, CA 94954 |
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 | 0 | 6 | 9 | 4 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 0 | 6 | 9 | 4 | 6 | 4 | 1 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.