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OBSERVATION MEDICAL GROUP LLC
NPI 1467094425
Emergency Medicine in Riverview, FL

Active since October 11, 2019
6901 SIMMONS LOOP, RIVERVIEW, FL 33578(813) 302-8000 Get Directions Write a Review

NPPES record last updated: October 11, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Observation Medical Group Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OBSERVATION MEDICAL GROUP LLC (NPI 1467094425) is a healthcare organization registered as an emergency medicine in Riverview, Florida and active in the NPI registry since October 2019. The organization lists Dion Richard Samerson, Authorized Official, as its authorized official.

NPPES Registry Identity

NPI1467094425
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameOBSERVATION MEDICAL GROUP LLC
Location Address6901 SIMMONS LOOPRiverview, FL 33578-9498
Mailing AddressPo Box 10855Daytona Beach, FL 32120-0855 · (386) 274-7800
Phone(813) 302-8000
Organization SubpartNo
Authorized OfficialDion Richard SamersonAuthorized Official · (813) 874-5707
Enumeration DateOctober 11, 2019
✔ NPI 1467094425 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
6901 SIMMONS LOOP, Riverview, FL 33578
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Observation Medical Group Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

156

Medicare enrollment records show 156 clinicians reassign Medicare billing to Observation Medical Group LLC, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 8 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Emergency Medicine98
Nurse Practitioner44
Pediatric Medicine13
Internal Medicine1

Nearest to this location (20)

See all 156
Pamela Leach, APRN
Nurse Practitioner
NPI 1962913699
6901 SIMMONS LOOP
Riverview, FL 33578
(813) 302-8000
✔ PECOSSame address
Stephanie Rock, APRN
Nurse Practitioner
NPI 1407538994
6901 SIMMONS LOOP
Riverview, FL 33578
(813) 605-4142
✔ PECOS✔ Accepts MedicareSame address
Janu Singh, DO
Emergency Medicine
NPI 1316157795
6901 SIMMONS LOOP
Riverview, FL 33578
(248) 895-1052
✔ PECOS✔ Accepts MedicareSame address
Betsy Sommerfeld, APRN
Nurse Practitioner
NPI 1841742194
6901 SIMMONS LOOP
Riverview, FL 33578
(813) 302-8000
✔ PECOS✔ Accepts MedicareSame address
Colin Sullivan, M.D.
Emergency Medicine
NPI 1841619764
6901 SIMMONS LOOP
Riverview, FL 33578
(813) 302-8000
✔ PECOS✔ Accepts MedicareSame address
Aldo Rosales, ARNP
Nurse Practitioner
NPI 1467902908
12324 GILMERTON MIST LN
Riverview, FL 33579
(813) 471-8142
✔ PECOS✔ Accepts Medicare2.5 mi
Vicki Siedlack, N.P
Nurse Practitioner
NPI 1689682262
4016 SUN CITY CENTER BLVD
Sun City Center, FL 33573
(813) 634-3301
✔ PECOS✔ Accepts Medicare5.3 mi
Amber Turner, ARNP
Nurse Practitioner
NPI 1881622389
10222 BLOOMINGDALE AVE
Riverview, FL 33578
(813) 515-5814
✔ PECOS✔ Accepts Medicare7.3 mi
Timothy Balling, M.D.
Emergency Medicine
NPI 1902861966
119 OAKFIELD DR
Brandon, FL 33511
(813) 571-5150
✔ PECOS✔ Accepts Medicare11 mi
Ahmet Donmezer, MD
Emergency Medicine
NPI 1679733992
119 OAKFIELD DR
Brandon, FL 33511
(813) 681-5150
✔ PECOS✔ Accepts Medicare11 mi
Kari Carrieri, FNP-BC
Nurse Practitioner
NPI 1487106050
1 TAMPA GENERAL CIR
Tampa, FL 33606
(727) 641-0068
✔ PECOS✔ Accepts Medicare11 mi
Nicole Rettig, MD
Emergency Medicine
NPI 1104321884
1 TAMPA GENERAL CIR
Tampa, FL 33606
(813) 821-8038
✔ PECOS✔ Accepts Medicare11 mi
Sunshine Faison, ARNP
Nurse Practitioner
NPI 1598278459
1201 ORIENT RD
Tampa, FL 33619
(138) 247-8856
✔ PECOS✔ Accepts Medicare12 mi
Neil Reinhardt, M.D
Pediatric Medicine
NPI 1700814324
2 COLUMBIA DR
Tampa, FL 33606
(813) 844-7000
✔ PECOS12 mi
Dainius Drukteinis, M.D.,J.D.
Emergency Medicine
NPI 1821273053
2909 W BAY VISTA AVE.
Tampa, FL 33611
(917) 572-1051
✔ PECOS✔ Accepts Medicare12 mi
Thomas Cristoforo, DO
Pediatric Medicine
NPI 1417341462
17 DAVIS BLVD STE 308
Tampa, FL 33606
(813) 250-2506
✔ PECOS✔ Accepts Medicare12 mi
Jennifer Hobbs, FNP-C
Nurse Practitioner
NPI 1093112757
101 N FRANKLIN ST SUITE A
Tampa, FL 33602
(813) 229-2225
✔ PECOS13 mi
Heather Moody, ARNP
Nurse Practitioner
NPI 1851431050
4238 W KENNEDY BLVD
Tampa, FL 33609
(813) 870-2528
✔ PECOS✔ Accepts Medicare15 mi
Erika Cohen, MD
Pediatric Medicine
NPI 1992298749
2502 W SAINT ISABEL ST
Tampa, FL 33607
(813) 874-5707
✔ PECOS16 mi
Jeffer Pinzon, MD
Internal Medicine
NPI 1699345199
2502 W SAINT ISABEL ST
Tampa, FL 33607
(813) 874-5707
✔ PECOS✔ Accepts Medicare16 mi
See all 156 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Observation Medical Group LLC's NPI number?

The NPI number for Observation Medical Group LLC is 1467094425. It was assigned to this organization in the NPPES registry on October 11, 2019.

Where is Observation Medical Group LLC located?

Observation Medical Group LLC is located at 6901 Simmons Loop, Riverview, FL 33578. The listed phone number is (813) 302-8000.

What is Observation Medical Group LLC's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Observation Medical Group LLC enrolled in Medicare?

Yes. Observation Medical Group LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Observation Medical Group LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 156 clinicians in 4 Medicare specialties reassign their Medicare billing to Observation Medical Group LLC. A 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 the clinician's services. The largest specialties are Emergency Medicine (98), Nurse Practitioner (44) and Pediatric Medicine (13). Of these, 5 practice at this address and 8 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Observation Medical Group LLC was last updated on October 11, 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.