DR. WILLIAM JOHN ZACHARIAS MD PHD
NPI 1558651380
Internal Medicine - Critical Care Medicine in Cincinnati, OH
About Dr. William John Zacharias Md Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM JOHN ZACHARIAS MD PHD (NPI 1558651380) is an individual critical care medicine provider in Cincinnati, Ohio, licensed in Ohio (35132765) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with University Of Cincinnati Medical Center, Llc, and maintains a secondary practice location in Philadelphia.
NPPES Registry Identity
Specialties & Licenses 2
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
Dr. William John Zacharias Md Phd 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 William Zacharias reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Cincinnati, OH 45219
- Reassigned Medicare billing, Ohio enrollment
- 2,038 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
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 Cincinnati Medical Center, LLC
Acute Care Hospitals · Cincinnati, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 45219 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
CINCINNATI, OH 45219
CINCINNATI, OH 45219
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 William Zacharias's NPI number?
The NPI number for William Zacharias is 1558651380. It was assigned to this individual provider in the NPPES registry on April 13, 2011.
Where is William Zacharias located?
William Zacharias practices at 234 Goodman St, Cincinnati, OH 45219. The listed phone number is (513) 558-4831.
What is William Zacharias's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is William Zacharias enrolled in Medicare?
Yes. William Zacharias 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 William Zacharias's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Zacharias reassigns Medicare benefits to University Of Cincinnati Physicians Company, LLC (Cincinnati, OH). 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 William Zacharias's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Zacharias accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and Oscar Health Insurance list William Zacharias 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 William Zacharias affiliated with any hospitals?
According to CMS data, William Zacharias is affiliated with University Of Cincinnati Medical Center, LLC.
When was this NPI record last updated?
The NPPES record for William Zacharias was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. William John Zacharias, MD PHD · NPI 1558651380
Critical Care Medicine physician in Cincinnati, Ohio. Individual provider, active in the CMS NPPES registry since April 13, 2011.
## Identity
- **NPI:** 1558651380 (Entity type: Individual)
- **Enumerated:** April 13, 2011
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 35132765 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 234 GOODMAN ST, Cincinnati, OH 45219-2364
- **Phone:** (513) 558-4831 · **Fax:** (513) 558-4858
## 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:** University Of Cincinnati Physicians Company, LLC (NPI 1801840434, Cincinnati, OH), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 2011
## Record status
- **NPPES last updated:** July 21, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1558651380) · Data from the CMS NPPES public registry.