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DAYTON INTERNAL MEDICINE, PLLC
NPI 1942594841
Internal Medicine in Dayton, TN

Active since June 08, 2011CLIA 44D2028004 · Waiver
188 16TH AVE, SUITE 107, DAYTON, TN 37321(423) 775-6933(423) 775-3372 Get Directions Write a Review

NPPES record last updated: June 21, 2011. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dayton Internal Medicine, Pllc NPPES

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

DAYTON INTERNAL MEDICINE, PLLC (NPI 1942594841) is a healthcare organization registered as an internal medicine in Dayton, Tennessee and active in the NPI registry since June 2011. The organization holds a CLIA Waiver certificate valid through August 7, 2027 and lists Hak S. Seo, Owner, as its authorized official.

NPPES Registry Identity

NPI1942594841
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameDAYTON INTERNAL MEDICINE, PLLC
Location Address188 16TH AVE, SUITE 107Dayton, TN 37321-1036
Mailing Address188 16th Ave, Suite 107Dayton, TN 37321-1036 · (423) 775-6933 · Fax (423) 775-3372
Phone(423) 775-6933
Fax(423) 775-3372
Organization SubpartNo
Authorized OfficialHak S. SeoOwner · (423) 775-6933
Enumeration DateJune 8, 2011
Last NPPES UpdateJune 21, 2011
✔ NPI 1942594841 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in GA · 002990
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
188 16TH AVE, Dayton, TN 37321
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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)

Dayton Internal Medicine, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Dayton Internal Medicine, PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Hak Seo, MD
Internal Medicine
NPI 1043471238
188 16TH AVE SUITE 107
Dayton, TN 37321
(423) 775-6933
✔ PECOS✔ Accepts MedicareSame address
Lindsay Hicks, APRN
Nurse Practitioner
NPI 1134626625
126 LAVENDER ST
Spring City, TN 37381
(423) 452-9984
✔ PECOS✔ Accepts Medicare15 mi
Hayley Ruebusch, APRN
Nurse Practitioner
NPI 1124674403
6734 LEE HWY
Chattanooga, TN 37421
(423) 899-0431
✔ PECOS✔ Accepts Medicare34 mi
Katie Arnold, MSN, APRN, FNP-BC
Nurse Practitioner
NPI 1447709845
220 J L WHITE DR STE 100
Jasper, GA 30143
(706) 253-8001
✔ PECOS✔ Accepts Medicare77 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 44D2028004

Dayton Internal Medicine PLLC · Dayton, TN
Active · expires Aug 7, 2027
CLIA Number44D2028004
Laboratory TypePhysician Office
Certificate Effective DateAugust 8, 2025
Certificate Expiration DateAugust 7, 2027
Laboratory DirectorHak S. Seo
Laboratory Phone(423) 775-6933
Laboratory LocationDayton Internal Medicine PLLC188 16th Ave Ste 107, Dayton, TN 37321
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Dayton Internal Medicine, PLLC's NPI number?

The NPI number for Dayton Internal Medicine, PLLC is 1942594841. It was assigned to this organization in the NPPES registry on June 8, 2011.

Where is Dayton Internal Medicine, PLLC located?

Dayton Internal Medicine, PLLC is located at 188 16th Ave Suite 107, Dayton, TN 37321. The listed phone number is (423) 775-6933.

What is Dayton Internal Medicine, PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Dayton Internal Medicine, PLLC enrolled in Medicare?

Yes. Dayton Internal Medicine, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Dayton Internal Medicine, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Dayton Internal Medicine, PLLC. 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 Nurse Practitioner (3) and Internal Medicine (1). Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Dayton Internal Medicine, PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 44D2028004) is associated with this NPI, valid through August 7, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Dayton Internal Medicine, PLLC was last updated on June 21, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.