DR. AVA WILLIAMS DNP, CRNP, FNP-BC
NPI 1841693405
Nurse Practitioner - Family in Columbia, MD
About Dr. Ava Williams Dnp, Crnp, Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AVA WILLIAMS DNP, CRNP, FNP-BC (NPI 1841693405) is an individual family provider in Columbia, Maryland, licensed in Maryland (R205564) and active in the NPI registry since September 2014. She is enrolled in Medicare PECOS and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses 2
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
Dr. Ava Williams Dnp, Crnp, Fnp-bc 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
6Medicare enrollment records show Ava Williams reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ellicott City, MD 21042
- Reassigned Medicare billing, Maryland enrollment
Glen Burnie, MD 21061
- Reassigned Medicare billing, Maryland enrollment
- 5 clinicians in this Medicare group
Baltimore, MD 21202
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 18 clinicians in this Medicare group
Baltimore, MD 21202
- Reassigned Medicare billing, Maryland enrollment
- 257 clinicians in this Medicare group
Potomac, MD 20854
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 65 clinicians in this Medicare group
Rockville, MD 20854
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 168 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21045 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 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COLUMBIA, MD 21045
COLUMBIA, MD 21045
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 Ava Williams's NPI number?
The NPI number for Ava Williams is 1841693405. It was assigned to this individual provider in the NPPES registry on September 26, 2014.
Where is Ava Williams located?
Ava Williams practices at 5850 Waterloo Rd Ste 140, Columbia, MD 21045. The listed phone number is (443) 378-9971.
What is Ava Williams's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ava Williams enrolled in Medicare?
Yes. Ava 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 Ava Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ava Williams reassigns Medicare benefits to 6 organizations: Family Preventive Care Wellness Center LLC (Ellicott City, MD), Bhawna Bahethi, MD LLC (Glen Burnie, MD), Snf Physiatry Services MD LLC (Baltimore, MD), Maryland Family Care, Inc. (Baltimore, MD), Minuteclinic Primary Care Maryland LLC (Potomac, MD) and 1 more organization, listed in the Medicare section above. 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 Ava Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ava Williams was last updated on September 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 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.
# Dr. Ava Williams, DNP, CRNP, FNP-BC · NPI 1841693405
Family physician in Columbia, Maryland. Individual provider, active in the CMS NPPES registry since September 26, 2014.
## Identity
- **NPI:** 1841693405 (Entity type: Individual)
- **Enumerated:** September 26, 2014
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** R205564 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 5850 WATERLOO RD STE 140, Columbia, MD 21045-1944
- **Phone:** (443) 378-9971 · **Fax:** (833) 438-1629
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Family Preventive Care Wellness Center LLC (NPI 1508642901, Ellicott City, MD); Bhawna Bahethi, MD LLC (NPI 1457685380, Glen Burnie, MD); Snf Physiatry Services MD LLC (NPI 1508668542, Baltimore, MD); Maryland Family Care, Inc. (NPI 1598718256, Baltimore, MD); Minuteclinic Primary Care Maryland LLC (NPI 1487461034, Potomac, MD); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** September 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1841693405) · Data from the CMS NPPES public registry.