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DR. TWETHIDA OUNG MD
NPI 1790946481
Hospitalist in Daytona Beach, FL

Active since June 24, 2008PECOS EnrolledAccepts Medicare Assignment
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER, DAYTONA BEACH, FL 32114(386) 226-4542(386) 239-2354 Get Directions Write a Review

NPPES record last updated: December 9, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 9, 2025, May 10, 2017 (2 updates tracked since 2017).

About Dr. Twethida Oung Md NPPES

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

DR. TWETHIDA OUNG MD (NPI 1790946481) is an individual hospitalist provider in Daytona Beach, Florida, licensed in Florida (ME107936) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS, is affiliated with Mercyone Newton Medical Center, and maintains a secondary practice location in Chattanooga.

NPPES Registry Identity

NPI1790946481
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameDR. TWETHIDA OUNGCredential: MD
Location Address303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTERDaytona Beach, FL 32114-2709
Mailing Address303 North Clyde Morris Blvd., Halifax Health Medical CenterDaytona Beach, FL 32114-2709 · (386) 226-4542 · Fax (386) 239-2354
Phone(386) 226-4542
Fax(386) 239-2354
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateJune 24, 2008
Last NPPES UpdateDecember 9, 20252 updates tracked since enumeration
NPPES CertifiedDecember 9, 2025
✔ NPI 1790946481 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Licenses✔ Licensed in FL · ME107936✔ Licensed in TN · 75421
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License ME107936 (FL)
303 NORTH CLYDE MORRIS BLVD., Daytona Beach, FL 32114
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Secondary Practice Location 1

Location 12525 DeSales AveChattanooga, TN 37404-1102 · Phone (423) 495-2525

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, Oscar Insurance Company, Sanford Health Plan and more.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. Twethida Oung Md 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.

PECOS PAC ID7810179256
PECOS Enrollment IDI20180417000826, I20180531000805
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

7

Medicare enrollment records show Twethida Oung reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Halifax Healthcare Systems Inc
0.2 mi
Family Medicine
303 N CLYDE MORRIS BLVD
Daytona Beach, FL 32114
  • Reassigned Medicare billing, Florida enrollment
  • 786 clinicians in this Medicare group
NPI 1245283530 (386) 254-4000
Memorial Health Partners Foundation, Inc
469 mi
Internal Medicine
5600 BRAINERD RD, SUITE 500
Chattanooga, TN 37411
  • Reassigned Medicare billing, Tennessee enrollment
  • 570 clinicians in this Medicare group
NPI 1922053545 (423) 495-6870
Alegent Creighton Clinic
1,176 mi
Family Medicine
800 MERCY DR
Council Bluffs, IA 51503
  • Reassigned Medicare billing, Iowa and Nebraska enrollments
  • Also billed through NPI 1548287907 (Nebraska)
  • 482 clinicians in this Medicare group
NPI 1598811069 (855) 524-4001
St. Joseph's Area Health Services
1,436 mi
Critical Access
600 PLEASANT AVE S
Park Rapids, MN 56470
  • Reassigned Medicare billing, Minnesota enrollment
  • 80 clinicians in this Medicare group
NPI 1023086055 (218) 732-3311
Oakes Community Hospital
1,489 mi
Clinic/Center
1200 N 7TH ST
Oakes, ND 58474
  • Reassigned Medicare billing, North Dakota enrollment
  • Also billed through NPI 1598848517 (North Dakota)
  • 40 clinicians in this Medicare group
NPI 1477724433 (701) 742-3291
Lisbon Area Health Services
1,490 mi
Critical Access
905 MAIN ST
Lisbon, ND 58054
  • Reassigned Medicare billing, North Dakota enrollment
  • Also billed through NPI 1184051971 (North Dakota)
  • 39 clinicians in this Medicare group
NPI 1609872431 (701) 683-6400
Mercy Hospital Of Valley City
1,525 mi
Critical Access
570 CHAUTAUQUA BLVD
Valley City, ND 58072
  • Reassigned Medicare billing, North Dakota enrollment
  • 64 clinicians in this Medicare group
NPI 1477549111 (701) 845-6400

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
149 services146 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
28 services28 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercyone Newton Medical Center

Acute Care Hospitals · Newton, IA
OwnershipVoluntary non-profit - Private
CMS Certification Number160032
Location204 N 4th Ave ENewton, IA 50208 · Jasper County
Emergency services Birthing friendly

Chi Health Midlands

Acute Care Hospitals · Papillion, NE
OwnershipVoluntary non-profit - Church
CMS Certification Number280105
Location11111 South 84th StPapillion, NE 68046 · Sarpy County
Emergency services

Chi Health Schuyler

Critical Access Hospitals · Schuyler, NE
OwnershipVoluntary non-profit - Private
CMS Certification Number281323
Location104 West 17th StSchuyler, NE 68661 · Colfax County
Emergency services

Memorial Community Hospital & Health System

Critical Access Hospitals · Blair, NE
OwnershipVoluntary non-profit - Private
CMS Certification Number281359
Location810 North 22nd StBlair, NE 68008 · Washington County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 32114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$130.04 typical visit price
range $56.00 – $171.84
Typical copayment $32.51 (range $14.00 – $42.96)
Most-billed visit code 99204
Established Patient
$99.16 typical visit price
range $17.57 – $139.16
Typical copayment $24.79 (range $4.39 – $34.79)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. REWADEE SOONTHAROTHAI MD
Emergency Medicine
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER
DAYTONA BEACH, FL 32114
Volusia County (386) 425-2285
DR. CINDY MAY HIRD MD
Emergency Medicine
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER
DAYTONA BEACH, FL 32114
Volusia County (386) 425-2285
MARYJANE MCLAUGHLIN ARNP
Nurse Practitioner (Adult Health)
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER
DAYTONA BEACH, FL 32114
Volusia County (386) 947-9000
DR. JANET MESRI MD
Emergency Medicine
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER
DAYTONA BEACH, FL 32114
Volusia County (386) 254-4000
DR. KHALIL NEMOU MD
Hospitalist
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER
DAYTONA BEACH, FL 32114
Volusia County (386) 425-2285
DR. BARNEY EDWARD DILLARD, III III MD
Emergency Medicine
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER
DAYTONA BEACH, FL 32114
Volusia County (386) 425-2285
DR. PETER GENE TAVES M.D.
Pediatrics (Neonatal-Perinatal Medicine)
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER - NICU
DAYTONA BEACH, FL 32114
Volusia County (386) 254-4000
DR. BRIAN VAZQUEZ MD
Pediatrics
303 NORTH CLYDE MORRIS BLVD., HALIFAX HEALTH MEDICAL CENTER
DAYTONA BEACH, FL 32114
Volusia County (386) 254-2285

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 Twethida Oung's NPI number?

The NPI number for Twethida Oung is 1790946481. It was assigned to this individual provider in the NPPES registry on June 24, 2008.

Where is Twethida Oung located?

Twethida Oung practices at 303 North Clyde Morris Blvd. Halifax Health Medical Center, Daytona Beach, FL 32114. The listed phone number is (386) 226-4542.

What is Twethida Oung's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Twethida Oung enrolled in Medicare?

Yes. Twethida Oung 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 Twethida Oung's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Twethida Oung reassigns Medicare benefits to 7 organizations: Halifax Healthcare Systems Inc (Daytona Beach, FL), Memorial Health Partners Foundation, Inc (Chattanooga, TN), Alegent Creighton Clinic (Council Bluffs, IA), St. Joseph's Area Health Services (Park Rapids, MN), Oakes Community Hospital (Oakes, ND) 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 Twethida Oung's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Twethida Oung accept?

Health plans from Blue Cross Blue Shield of North Dakota, Oscar Insurance Company, Sanford Health Plan and Wellmark Health Plan of Iowa, Inc. list Twethida Oung 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 Twethida Oung affiliated with any hospitals?

According to CMS data, Twethida Oung is affiliated with Mercyone Newton Medical Center, Chi Health Midlands, Chi Health Schuyler and Memorial Community Hospital & Health System.

When was this NPI record last updated?

The NPPES record for Twethida Oung was last updated on December 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.