Sandra Williamson, CNM, ARNP, MSN
NPI 1649318825 · Obstetrics & Gynecology Nurse Practitioner · Maitland, FL
Enrolled with Medicare as Practitioner - Certified Nurse Midwife (cnm) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sandra Williamson, CNM, ARNP, MSN is a Obstetrics & Gynecology Nurse Practitioner provider in Maitland, FL (NPI 1649318825).
Provider details
- NPI number
- 1649318825
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNM, ARNP, MSN
- Sex
- Female
- Sole proprietor
- No
- License
- 66718-2 (FL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$13 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-01
- Last updated
- 2012-05-07
Frequently asked questions
- What is Sandra Williamson's NPI number?
- Sandra Williamson's National Provider Identifier (NPI) is 1649318825, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sandra Williamson's specialty?
- Sandra Williamson is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sandra Williamson located?
- Sandra Williamson's practice location on file with NPPES is 301 S Maitland Ave, Maitland, FL 32751-5631.
- What is Sandra Williamson's phone number?
- The practice phone number listed in the NPPES registry for Sandra Williamson is (407) 644-9730.
- Does Sandra Williamson accept Medicare?
- Sandra Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sandra Williamson's NPI active?
- Yes — Sandra Williamson's NPI (1649318825) is active in the NPPES registry as of the last update on 2012-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.