DR. ADAM ELIJAH SIENKIEWICZ M.D. M.P.H
NPI 1336536440
Emergency Medicine in Naples, FL
About Dr. Adam Elijah Sienkiewicz M.d. M.p.h NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ADAM ELIJAH SIENKIEWICZ M.D. M.P.H (NPI 1336536440) is an individual emergency medicine provider in Naples, Florida, licensed in Florida (ME139134) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Physicians Regional Medical Center - Pine Ridge, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
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. Adam Elijah Sienkiewicz M.d. M.p.h 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
7Medicare enrollment records show Adam Sienkiewicz reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Naples, FL 34114
- Reassigned Medicare billing, Florida enrollment
- 59 clinicians in this Medicare group
Miami, FL 33175
- Reassigned Medicare billing, Florida enrollment
- 82 clinicians in this Medicare group
Miami, FL 33186
- Reassigned Medicare billing, Florida enrollment
- 95 clinicians in this Medicare group
Miami, FL 33178
- Reassigned Medicare billing, Florida enrollment
- 87 clinicians in this Medicare group
Miami Lakes, FL 33016
- Reassigned Medicare billing, Florida enrollment
- 83 clinicians in this Medicare group
Palmetto Bay, FL 33176
- Reassigned Medicare billing, Florida enrollment
- 82 clinicians in this Medicare group
Vero Beach, FL 32960
- Reassigned Medicare billing, Florida enrollment
- 66 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 4
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Physicians Regional Medical Center - Pine Ridge
Acute Care Hospitals · Naples, FLWest Kendall Baptist Hospital
Acute Care Hospitals · Miami, FLPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 34114 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.
NAPLES, FL 34114
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 Adam Sienkiewicz's NPI number?
The NPI number for Adam Sienkiewicz is 1336536440. It was assigned to this individual provider in the NPPES registry on April 16, 2015.
Where is Adam Sienkiewicz located?
Adam Sienkiewicz practices at 8300 Collier Blvd, Naples, FL 34114. The listed phone number is (239) 354-6000.
What is Adam Sienkiewicz's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Adam Sienkiewicz enrolled in Medicare?
Yes. Adam Sienkiewicz 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 Adam Sienkiewicz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adam Sienkiewicz reassigns Medicare benefits to 7 organizations: Integrated Emergency Medicine Specialists LLC (Naples, FL), Emergent Physicians Of West Dade, LLC (Miami, FL), Emergent Physicians Of Country Walk, LLC (Miami, FL), Emergent Physicians Of Doral, LLC (Miami, FL), Emergent Physicians Of Miami Lakes, LLC (Miami Lakes, FL) and 2 more organizations, listed in the Medicare section above. 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 Adam Sienkiewicz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Adam Sienkiewicz affiliated with any hospitals?
According to CMS data, Adam Sienkiewicz is affiliated with Physicians Regional Medical Center - Pine Ridge and West Kendall Baptist Hospital.
When was this NPI record last updated?
The NPPES record for Adam Sienkiewicz was last updated on September 10, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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. Adam Elijah Sienkiewicz, M.D. M.P.H · NPI 1336536440
Emergency Medicine physician in Naples, Florida. Individual provider, active in the CMS NPPES registry since April 16, 2015.
## Identity
- **NPI:** 1336536440 (Entity type: Individual)
- **Enumerated:** April 16, 2015
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** ME139134 (Florida)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 8300 COLLIER BLVD, Naples, FL 34114-3549
- **Phone:** (239) 354-6000
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Integrated Emergency Medicine Specialists LLC (NPI 1174991632, Naples, FL); Emergent Physicians Of West Dade, LLC (NPI 1275200537, Miami, FL); Emergent Physicians Of Country Walk, LLC (NPI 1114497005, Miami, FL); Emergent Physicians Of Doral, LLC (NPI 1245909449, Miami, FL); Emergent Physicians Of Miami Lakes, LLC (NPI 1730901018, Miami Lakes, FL); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Miami, Lm Miller School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** September 10, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1336536440) · Data from the CMS NPPES public registry.