DR. IAN RICHARD DAY M.D.
NPI 1316944317
Hospitalist in Lake Mary, FL
About Dr. Ian Richard Day M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. IAN RICHARD DAY M.D. (NPI 1316944317) is an individual hospitalist provider in Lake Mary, Florida, licensed in Florida (ME73903) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Adventhealth Orlando, and is a graduate of Georgetown University School Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses 2
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. Ian Richard Day M.d. 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 Ian Day reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lake Mary, FL 32746
- Reassigned Medicare billing, Florida enrollment
- 329 clinicians in this Medicare group
Lake Mary, FL 32746
- Reassigned Medicare billing, Florida enrollment
- 214 clinicians in this Medicare group
Altamonte Springs, FL 32701
- Reassigned Medicare billing, Florida enrollment
- 335 clinicians in this Medicare group
Melbourne, FL 32935
- Reassigned Medicare billing, Florida enrollment
- Medicare enrollment name: Mel Bay Health Care Inc
- 7 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.
Adventhealth Orlando
Acute Care Hospitals · Orlando, FLPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 32746 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAKE MARY, FL 32746
LAKE MARY, FL 32746
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 Ian Day's NPI number?
The NPI number for Ian Day is 1316944317. It was assigned to this individual provider in the NPPES registry on July 5, 2005.
Where is Ian Day located?
Ian Day practices at 525 Technology Park, Lake Mary, FL 32746. The listed phone number is (407) 647-2346.
What is Ian Day's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Ian Day enrolled in Medicare?
Yes. Ian Day 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 Ian Day's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ian Day reassigns Medicare benefits to 4 organizations: Central Florida Inpatient Medicine LLC (Lake Mary, FL), Inpatient Care Specialists LLC (Lake Mary, FL), Cogent Healthcare Of Pensacola LLC (Altamonte Springs, FL) and La B & b Enterprise (Melbourne, FL). 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 Ian Day's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ian Day accept?
Health plans from Cigna HealthCare of Florida, Inc. and Cigna Healthcare list Ian Day 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 Ian Day affiliated with any hospitals?
According to CMS data, Ian Day is affiliated with Adventhealth Orlando.
When was this NPI record last updated?
The NPPES record for Ian Day was last updated on March 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Ian Richard Day, M.D. · NPI 1316944317
Hospitalist physician in Lake Mary, Florida. Individual provider, active in the CMS NPPES registry since July 5, 2005.
## Identity
- **NPI:** 1316944317 (Entity type: Individual)
- **Enumerated:** July 5, 2005
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** ME73903 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 525 TECHNOLOGY PARK, Lake Mary, FL 32746-7107
- **Phone:** (407) 647-2346
## 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): Central Florida Inpatient Medicine LLC (NPI 1649228859, Lake Mary, FL); Inpatient Care Specialists LLC (NPI 1679817134, Lake Mary, FL); Cogent Healthcare Of Pensacola LLC (NPI 1083297147, Altamonte Springs, FL); La B & b Enterprise (NPI 1407162654, Melbourne, FL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 1996
## Record status
- **NPPES last updated:** March 31, 2026
- **Other identifiers:** Medicaid 255884000 (FL)
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Source: [NPI Profile](https://npiprofile.com/npi/1316944317) · Data from the CMS NPPES public registry.