1. Home
  2. Directory
  3. Tennessee
  4. Johnson City
  5. Dermatology
  6. NPI Profile

SKINWISE PLLC
NPI 1538025135
Dermatology in Johnson City, TN

Active since December 29, 2025CLIA 44D2339972 · Microscopy
1627 OLD GRAY STATION RD STE 30, JOHNSON CITY, TN 37615(423) 528-8833(423) 546-7499 Get Directions Write a Review

NPPES record last updated: March 4, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Mar 4, 2026, Feb 4, 2026, Dec 29, 2025 (3 updates tracked since 2025).

About Skinwise Pllc NPPES

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

SKINWISE PLLC (NPI 1538025135) is a healthcare organization registered as a dermatology in Johnson City, Tennessee and active in the NPI registry since December 2025. The organization holds a CLIA Microscopy certificate valid through March 9, 2028 and lists Joni Glavan Sago, Owner, as its authorized official.

NPPES Registry Identity

NPI1538025135
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameSKINWISE PLLC
Location Address1627 OLD GRAY STATION RD STE 30Johnson City, TN 37615-4194
Mailing Address1627 Old Gray Station Rd Ste 30Johnson City, TN 37615-4194 · (423) 528-8833 · Fax (423) 546-7499
Phone(423) 528-8833
Fax(423) 546-7499
Organization SubpartNo
Authorized OfficialJoni Glavan SagoOwner · (423) 528-8833
Enumeration DateDecember 29, 2025
Last NPPES UpdateMarch 4, 20263 updates tracked since enumeration
NPPES CertifiedMarch 4, 2026
✔ NPI 1538025135 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
1627 OLD GRAY STATION RD STE 30, Johnson City, TN 37615
Open in Google Maps ↗

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

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 for Provider-Performed Microscopy Procedures (PPMP) 44D2339972

Skinwise Dermatology · Johnson City, TN
Active · expires Mar 9, 2028
CLIA Number44D2339972
Laboratory TypePhysician Office
Certificate Effective DateMarch 10, 2026
Certificate Expiration DateMarch 9, 2028
Laboratory DirectorJoni G. Sago
Laboratory Phone(423) 282-3376
Laboratory LocationSkinwise Dermatology1627 Old Gray Station Road, Suite 30, Johnson City, TN 37615
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Patient Reviews User submitted

Reviews are submitted by site visitors and approved by a human moderator before publication.

Review by Pamela ***** March 5, 2026

5/5
I have been a patient of Dr. Sago for about 10 years. She provides excellent treatment, educates her patients about skin diseases and is very kind and patient. Taking her time and listening to her patients is a gift to us and also to the numerous residents she had with her. She is teaching them the RIGHT way to be a physician and never once looked at her watch. I could not be happier!
Provider 5/5 Office Staff 5/5
Visited this provider? Share your experience.

Other Providers at the Same Location NPPES 2

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

DIANA KATHERINE RAMIREZ PA-C
Physician Assistant
1627 OLD GRAY STATION RD STE 30
JOHNSON CITY, TN 37615
Washington County (423) 528-8833
JONI GLAVAN SAGO M.D.
Dermatology
1627 OLD GRAY STATION RD STE 30
JOHNSON CITY, TN 37615
Washington County (423) 528-8833

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 Skinwise PLLC's NPI number?

The NPI number for Skinwise PLLC is 1538025135. It was assigned to this organization in the NPPES registry on December 29, 2025.

Where is Skinwise PLLC located?

Skinwise PLLC is located at 1627 Old Gray Station Rd Ste 30, Johnson City, TN 37615. The listed phone number is (423) 528-8833.

What is Skinwise PLLC's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Does Skinwise PLLC hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 44D2339972) is associated with this NPI, valid through March 9, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Skinwise PLLC was last updated on March 4, 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.