DR. NICHOLAS GILLIAM DO
NPI 1255960357
Psychiatry & Neurology - Psychiatry in Winter Haven, FL
About Dr. Nicholas Gilliam Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS GILLIAM DO (NPI 1255960357) is an individual psychiatry provider in Winter Haven, Florida, licensed in Florida (OS21066) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Winter Haven Hospital, and is a graduate of Ohio University, College Of Osteopathic Medicine (2020).
NPPES Registry Identity
Specialties & Licenses
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. Nicholas Gilliam Do 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 Nicholas Gilliam reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lutz, FL 33549
- Reassigned Medicare billing, Florida enrollment
- 240 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.
Winter Haven Hospital
Acute Care Hospitals · Winter Haven, FLPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 33881 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.
WINTER HAVEN, FL 33881
WINTER HAVEN, FL 33881
WINTER HAVEN, FL 33881
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 Nicholas Gilliam's NPI number?
The NPI number for Nicholas Gilliam is 1255960357. It was assigned to this individual provider in the NPPES registry on April 2, 2020.
Where is Nicholas Gilliam located?
Nicholas Gilliam practices at 200 Avenue F NE, Winter Haven, FL 33881. The listed phone number is (800) 229-2273.
What is Nicholas Gilliam's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Nicholas Gilliam enrolled in Medicare?
Yes. Nicholas Gilliam 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 Nicholas Gilliam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Gilliam reassigns Medicare benefits to Baycare Behavioral Health Associates LLC (Lutz, FL). 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 Nicholas Gilliam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nicholas Gilliam accept?
Health plans from Cigna HealthCare of Florida, Inc., Cigna Healthcare, Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company) and UnitedHealthcare list Nicholas Gilliam 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 Nicholas Gilliam affiliated with any hospitals?
According to CMS data, Nicholas Gilliam is affiliated with Winter Haven Hospital.
When was this NPI record last updated?
The NPPES record for Nicholas Gilliam was last updated on September 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Nicholas Gilliam, DO · NPI 1255960357
Psychiatry physician in Winter Haven, Florida. Individual provider, active in the CMS NPPES registry since April 2, 2020.
## Identity
- **NPI:** 1255960357 (Entity type: Individual)
- **Enumerated:** April 2, 2020
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** OS21066 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 AVENUE F NE, Winter Haven, FL 33881-4131
- **Phone:** (800) 229-2273
## 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:** Baycare Behavioral Health Associates LLC (NPI 1245502152, Lutz, FL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio University, College Of Osteopathic Medicine, class of 2020
## Record status
- **NPPES last updated:** September 9, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1255960357) · Data from the CMS NPPES public registry.