AISLINN J WILLIAMS M.D., PH.D.
NPI 1235440249
Psychiatry & Neurology - Psychiatry in Iowa City, IA
About Aislinn J Williams M.d., Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AISLINN J WILLIAMS M.D., PH.D. (NPI 1235440249) is an individual psychiatry provider in Iowa City, Iowa, licensed in Iowa (MD-44579) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS, is affiliated with University Of Iowa Hospital & Clinics, and maintains a secondary practice location in Ann Arbor.
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
Aislinn J Williams M.d., Ph.d. 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 Reassignment
Medicare enrollment records show Aislinn Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Iowa City, IA 52242
- Reassigned Medicare billing, Iowa enrollment
- 2,190 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 2
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Iowa Hospital & Clinics
Acute Care Hospitals · Iowa City, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 52242 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
IOWA CITY, IA 52242
IOWA CITY, IA 52242
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 Aislinn Williams's NPI number?
The NPI number for Aislinn Williams is 1235440249. It was assigned to this individual provider in the NPPES registry on June 24, 2010.
Where is Aislinn Williams located?
Aislinn Williams practices at 200 Hawkins Dr, Iowa City, IA 52242. The listed phone number is (319) 335-2434.
What is Aislinn Williams's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Aislinn Williams enrolled in Medicare?
Yes. Aislinn 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 organization bills Medicare for Aislinn Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aislinn Williams reassigns Medicare benefits to State University Of Iowa (Iowa City, IA). The 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 Aislinn Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Aislinn Williams accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Sanford Health Plan and 1 other insurer list Aislinn 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.
Is Aislinn Williams affiliated with any hospitals?
According to CMS data, Aislinn Williams is affiliated with University Of Iowa Hospital & Clinics.
When was this NPI record last updated?
The NPPES record for Aislinn Williams was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.
# Aislinn J Williams, M.D., PH.D. · NPI 1235440249
Psychiatry physician in Iowa City, Iowa. Individual provider, active in the CMS NPPES registry since June 24, 2010.
## Identity
- **NPI:** 1235440249 (Entity type: Individual)
- **Enumerated:** June 24, 2010
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** MD-44579 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 HAWKINS DR, Iowa City, IA 52242-1009
- **Phone:** (319) 335-2434
## 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:** State University Of Iowa (NPI 1114905387, Iowa City, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Iowa, Rj & L Carver College Of Medicine, class of 2010
## Record status
- **NPPES last updated:** March 17, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1235440249) · Data from the CMS NPPES public registry.