SIERRA M WILLIAMS
NPI 1164228581
Nurse Practitioner - Psychiatric/Mental Health in Ocala, FL
About Sierra M Williams NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIERRA M WILLIAMS (NPI 1164228581) is an individual psychiatric/mental health provider in Ocala, Florida, licensed in Florida (11037914) and active in the NPI registry since February 2025. She is enrolled in Medicare PECOS, maintains a secondary practice location in Arcadia, and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Sierra M Williams is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Sierra Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ocala, FL 34474
- Reassigned Medicare billing, Florida enrollment
- 369 clinicians in this Medicare group
Parrish, FL 34219
- Reassigned Medicare billing, Florida enrollment
- 709 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 34474 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OCALA, FL 34474
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Sierra Williams's NPI number?
The NPI number for Sierra Williams is 1164228581. It was assigned to this individual provider in the NPPES registry on February 25, 2025.
Where is Sierra Williams located?
Sierra Williams practices at 3200 SW 34th Ave, Ocala, FL 34474. The listed phone number is (352) 445-1200.
What is Sierra Williams's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Sierra Williams enrolled in Medicare?
Yes. Sierra Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Sierra Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sierra Williams reassigns Medicare benefits to 2 organizations: Balanced Wellbeing LLC (Ocala, FL) and Mcr Health, Inc. (Parrish, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sierra Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sierra Williams accept?
Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Cigna HealthCare of Florida, Inc., Cigna Healthcare and Florida Blue (BlueCross BlueShield FL) and 3 other insurers list Sierra Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Sierra Williams was last updated on September 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Sierra M Williams · NPI 1164228581
Psychiatric/Mental Health physician in Ocala, Florida. Individual provider, active in the CMS NPPES registry since February 25, 2025.
## Identity
- **NPI:** 1164228581 (Entity type: Individual)
- **Enumerated:** February 25, 2025
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 11037914 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 3200 SW 34TH AVE, Ocala, FL 34474-7456
- **Phone:** (352) 445-1200
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Balanced Wellbeing LLC (NPI 1336513639, Ocala, FL); Mcr Health, Inc. (NPI 1255376000, Parrish, FL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** September 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1164228581) · Data from the CMS NPPES public registry.