ALLEN J WILLIAMS MD
NPI 1861427270
Emergency Medicine in Toledo, OH
About Allen J Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALLEN J WILLIAMS MD (NPI 1861427270) is an individual emergency medicine provider in Toledo, Ohio, licensed in Ohio (35.092911) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Toledo Medical Center, and is a graduate of Wayne State University School Of Medicine (1986).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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
Allen J Williams Md 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
3Medicare enrollment records show Allen Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Toledo, OH 43614
- Reassigned Medicare billing, Ohio enrollment
- 522 clinicians in this Medicare group
Toledo, OH 43606
- Reassigned Medicare billing, Ohio enrollment
- 147 clinicians in this Medicare group
Wauseon, OH 43567
- Reassigned Medicare billing, Ohio enrollment
- 118 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 4
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Toledo Medical Center
Acute Care Hospitals · Toledo, OHPromedica Toledo Hospital
Acute Care Hospitals · Toledo, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 43614 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.
TOLEDO, OH 43614
TOLEDO, OH 43614
TOLEDO, OH 43614
TOLEDO, OH 43614
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 Allen Williams's NPI number?
The NPI number for Allen Williams is 1861427270. It was assigned to this individual provider in the NPPES registry on July 12, 2006.
Where is Allen Williams located?
Allen Williams practices at 3000 Arlington Ave, Toledo, OH 43614. The listed phone number is (419) 383-3888.
What is Allen Williams's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Allen Williams enrolled in Medicare?
Yes. Allen 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 Allen Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allen Williams reassigns Medicare benefits to 3 organizations: University Of Toledo Physicians, LLC (Toledo, OH), Emergency Physicians Of Northwest Ohio Inc. (Toledo, OH) and Hles Of Ohio, Inc. (Wauseon, OH). 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 Allen Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Allen Williams affiliated with any hospitals?
According to CMS data, Allen Williams is affiliated with University Of Toledo Medical Center and Promedica Toledo Hospital.
When was this NPI record last updated?
The NPPES record for Allen Williams was last updated on June 4, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Allen J Williams, MD · NPI 1861427270
Emergency Medicine physician in Toledo, Ohio. Individual provider, active in the CMS NPPES registry since July 12, 2006.
## Identity
- **NPI:** 1861427270 (Entity type: Individual)
- **Enumerated:** July 12, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 35.092911 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 3000 ARLINGTON AVE, Toledo, OH 43614-2595
- **Phone:** (419) 383-3888 · **Fax:** (419) 383-2860
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): University Of Toledo Physicians, LLC (NPI 1215240676, Toledo, OH); Emergency Physicians Of Northwest Ohio Inc. (NPI 1043274418, Toledo, OH); Hles Of Ohio, Inc. (NPI 1679806301, Wauseon, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 1986
## Record status
- **NPPES last updated:** June 4, 2019
- **Other identifiers:** Medicaid 0845714 (OH)
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Source: [NPI Profile](https://npiprofile.com/npi/1861427270) · Data from the CMS NPPES public registry.