DR. WILLIAM DENNEY ZIMMERMAN D.O.
NPI 1275997124
Psychiatry & Neurology - Neurocritical Care in Maryville, TN
About Dr. William Denney Zimmerman D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM DENNEY ZIMMERMAN D.O. (NPI 1275997124) is an individual neurocritical care provider in Maryville, Tennessee, licensed in Tennessee (5485) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Blount Memorial Hospital, and maintains a secondary practice location in Maryville.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 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 Denney Zimmerman D.o. 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
4Medicare enrollment records show William Zimmerman reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Alcoa, TN 37701
- Reassigned Medicare billing, Tennessee enrollment
- 295 clinicians in this Medicare group
Oxon Hill, MD 20745
- Reassigned Medicare billing, District of Columbia enrollment
- Medicare enrollment name: Dimensions Healthcare Associates, Inc
- 328 clinicians in this Medicare group
Pikesville, MD 21208
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: St Paul Place Specialists, Inc.
- 423 clinicians in this Medicare group
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Shock Trauma Associates PA
- 541 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.
Blount Memorial Hospital
Acute Care Hospitals · Maryville, TNOther Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARYVILLE, TN 37804
MARYVILLE, TN 37804
MARYVILLE, TN 37804
MARYVILLE, TN 37804
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 Zimmerman's NPI number?
The NPI number for William Zimmerman is 1275997124. It was assigned to this individual provider in the NPPES registry on April 7, 2016.
Where is William Zimmerman located?
William Zimmerman practices at 463 Bmh Physicians Office Bldg, Maryville, TN 37804. The listed phone number is (865) 980-5100.
What is William Zimmerman's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurocritical Care, with taxonomy code 2084A2900X.
Is William Zimmerman enrolled in Medicare?
Yes. William Zimmerman 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 William Zimmerman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Zimmerman reassigns Medicare benefits to 4 organizations: Blount Memorial Physician Group, Inc (Alcoa, TN), Dimensions Health Associates Dba University Of Maryland Capital Region (Oxon Hill, MD), Saint Paul Place Specialists, Inc. (Pikesville, MD) and Shock Trauma Associates, P.A. (Baltimore, MD). 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 William Zimmerman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Zimmerman accept?
Health plans from Cigna Healthcare list William Zimmerman 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 Zimmerman affiliated with any hospitals?
According to CMS data, William Zimmerman is affiliated with Blount Memorial Hospital.
When was this NPI record last updated?
The NPPES record for William Zimmerman was last updated on November 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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 Denney Zimmerman, D.O. · NPI 1275997124
Neurocritical Care physician in Maryville, Tennessee. Individual provider, active in the CMS NPPES registry since April 7, 2016.
## Identity
- **NPI:** 1275997124 (Entity type: Individual)
- **Enumerated:** April 7, 2016
- **Primary specialty:** Psychiatry & Neurology - Neurocritical Care · taxonomy 2084A2900X
- **State license:** 5485 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 463 BMH PHYSICIANS OFFICE BLDG, Maryville, TN 37804-5807
- **Phone:** (865) 980-5100 · **Fax:** (865) 980-5105
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Blount Memorial Physician Group, Inc (NPI 1699710194, Alcoa, TN); Dimensions Health Associates Dba University Of Maryland Capital Region (NPI 1407486293, Oxon Hill, MD); Saint Paul Place Specialists, Inc. (NPI 1639110919, Pikesville, MD); Shock Trauma Associates, P.A. (NPI 1679512909, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** November 4, 2025
- **Other identifiers:** Medicaid Q089543 (TN)
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Source: [NPI Profile](https://npiprofile.com/npi/1275997124) · Data from the CMS NPPES public registry.