TIMOTHY ALAN NIEMI M.D.
NPI 1790753036
Emergency Medicine in Cortland, OH
About Timothy Alan Niemi M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TIMOTHY ALAN NIEMI M.D. (NPI 1790753036) is an individual emergency medicine provider in Cortland, Ohio, licensed in Ohio (35-053422) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Timothy Alan Niemi M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Timothy Niemi reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Erie, PA 16544
- Reassigned Medicare billing, Pennsylvania enrollment
- 124 clinicians in this Medicare group
Clarion, PA 16214
- Reassigned Medicare billing, Pennsylvania enrollment
- 39 clinicians in this Medicare group
Seaman, OH 45679
- Reassigned Medicare billing, Ohio enrollment
- 894 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 3
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 44410 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Timothy Niemi's NPI number?
The NPI number for Timothy Niemi is 1790753036. It was assigned to this individual provider in the NPPES registry on March 11, 2006.
Where is Timothy Niemi located?
Timothy Niemi practices at 2662 Elm Rd NE, Cortland, OH 44410. The listed phone number is (330) 841-3004.
What is Timothy Niemi's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Timothy Niemi enrolled in Medicare?
Yes. Timothy Niemi is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Timothy Niemi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Niemi reassigns Medicare benefits to 3 organizations: Ahn Emergency Group Of Erie County Ltd. (Erie, PA), Ahn Emergency Group Of Clarion County Ltd (Clarion, PA) and Emergency Professional Services, Inc. (Seaman, 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 Timothy Niemi'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 Timothy Niemi was last updated on May 22, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.