Verified Injector.
About usSearch med spas

K2 Dermatology Boulder: Clinicians & License Verification

K2 Dermatology is a physician practice in Boulder, Colorado.

Address
3434 47th Street, Suite 200, Boulder, CO 80301
Website
k2derm.com
Hours
  • Monday: 8:00 AM to 4:00 PM
  • Tuesday: 8:00 AM to 4:00 PM
  • Wednesday: 8:00 AM to 4:00 PM
  • Thursday: 8:00 AM to 4:00 PM
  • Friday: 8:00 AM to 4:00 PM

Visit clinic website

Verification Summary for K2 Dermatology

Status
Verified
Named clinicians
6
Current license matches
6 of 6 named clinicians matched to current Colorado professional license records.
Medical Director
Not stated by clinic
Last checked
September 20, 2026
Reference
VI-0CD5D7
Verified Injector: credentials verified, last checked 09.20.2026. Ref VI-0CD5D7. A licensed physician and every clinician this clinic names on its website with a medical or nursing credential or the title Dr. were matched to current state license records.

Services Offered

Injectables

  • Neurotoxin injections · Botox
  • Dermal filler

Skin

  • Chemical peels
  • IPL and photofacial
  • Medical dermatology

The website of K2 Dermatology in Boulder lists five services: neurotoxin injections, dermal filler, chemical peels, IPL and photofacial, and medical dermatology.

K2 Dermatology Clinicians and Colorado License Status

Verified Injector lists six clinicians named by K2 Dermatology. All six matched current Colorado professional license records.

Cathy Koger, DO

Verification result: Current license matched

Colorado Medical License: Active

CEO

  • License #53663
  • Expires April 30, 2027
  • NPI: 1902194871
  • Primary taxonomy: Dermatology
  • Verified September 20, 2026
View verification evidence

Clinic-reported

Clinic-stated role
CEO
Credential
DO
Named as medical director
Not stated
Named as an injector
Not stated on the pages reviewed
Clinic source
k2derm.com/about-us
Date checked
September 30, 2026
Dr. Cathy Koger Cathy Koger,

Federal provider record

NPI
1902194871
Primary taxonomy
Dermatology
Date checked
September 20, 2026

State professional license

Credential
DO
State license
Colorado Department of Regulatory Agencies
License number
53663
Status
Active
Expires
2027-04-30
Checked
September 20, 2026

Board action recorded: Not published by this board.

Cathy Koger; License: 53663; Status: Active; License type: Physician (DR); Specialty: Dermatology; Expires: 04/30/2027 12:00:00 AM; City: Boulder

State data published September 1, 2026.

Verification finding

Result
Current license matched (Active)

K2 Dermatology names Cathy Koger, DO, with the stated role CEO. Verified Injector matched this clinician to license 53663 at the Colorado Department of Regulatory Agencies, which that board recorded as Active when checked September 20, 2026.

William C. Fix, MD

Verification result: Current license matched

Colorado Medical License: Active

dermatologist

  • License #72825
  • Expires April 30, 2027
  • NPI: 1063972040
  • Primary taxonomy: Dermatology
  • Verified September 20, 2026
View verification evidence

Clinic-reported

Clinic-stated role
dermatologist
Credential
MD
Named as medical director
Not stated
Named as an injector
Not stated on the pages reviewed
Clinic source
k2derm.com/about-us
Date checked
September 30, 2026
Dr. William C. Fix William C. Fix,

Federal provider record

NPI
1063972040
Primary taxonomy
Dermatology
Date checked
September 20, 2026

State professional license

Credential
MD
State license
Colorado Department of Regulatory Agencies
License number
72825
Status
Active
Expires
2027-04-30
Checked
September 20, 2026

Board action recorded: Not published by this board.

William Fix; License: 72825; Status: Active; License type: Physician (DR); Specialty: Dermatology; Expires: 04/30/2027 12:00:00 AM; City: Boulder

State data published September 1, 2026.

Verification finding

Result
Current license matched (Active)

K2 Dermatology names William C. Fix, MD, with the stated role dermatologist. Verified Injector matched this clinician to license 72825 at the Colorado Department of Regulatory Agencies, which that board recorded as Active when checked September 20, 2026.

Shannon Ross, PA-C, PA

Verification result: Current license matched

Colorado Professional License: Active

No role stated by the clinic

  • License #2309
  • Expires January 31, 2028
  • NPI: 1588621445
  • Primary taxonomy: Physician Assistant
  • Verified September 20, 2026
View verification evidence

Clinic-reported

Clinic-stated role
No role stated on the pages reviewed
Credential
PA-C, PA
Named as medical director
Not stated
Named as an injector
Not stated on the pages reviewed
Clinic source
k2derm.com/about-us
Date checked
September 30, 2026
Shannon Ross PA-C

Federal provider record

NPI
1588621445
Primary taxonomy
Physician Assistant
Date checked
September 20, 2026

State professional license

Credential
PA-C, PA
State license
Colorado Department of Regulatory Agencies
License number
2309
Status
Active
Expires
2028-01-31
Checked
September 20, 2026

Board action recorded: Not published by this board.

Shannon Ross; License: 2309; Status: Active; Expires: 01/31/2028 12:00:00 AM; City: Boulder

State data published September 1, 2026.

Verification finding

Result
Current license matched (Active)

K2 Dermatology names Shannon Ross, PA-C, PA, on its website. Verified Injector matched this clinician to license 2309 at the Colorado Department of Regulatory Agencies, which that board recorded as Active when checked September 20, 2026.

Kirsten Revitte, PA-C

Verification result: Current license matched

Colorado Professional License: Active

No role stated by the clinic

  • License #6491
  • Expires January 31, 2028
  • NPI: 1124636568
  • Primary taxonomy: Physician Assistant
  • Verified September 20, 2026
View verification evidence

Clinic-reported

Clinic-stated role
No role stated on the pages reviewed
Credential
PA-C
Named as medical director
Not stated
Named as an injector
Not stated on the pages reviewed
Clinic source
k2derm.com/about-us
Date checked
September 30, 2026
Kirsten Revitte PA-C

Federal provider record

NPI
1124636568
Primary taxonomy
Physician Assistant
Date checked
September 20, 2026

State professional license

Credential
PA-C
State license
Colorado Department of Regulatory Agencies
License number
6491
Status
Active
Expires
2028-01-31
Checked
September 20, 2026

Board action recorded: Not published by this board.

Kirsten Revitte; License: 6491; Status: Active; Expires: 01/31/2028 12:00:00 AM; City: Boulder

State data published September 1, 2026.

Verification finding

Result
Current license matched (Active)

K2 Dermatology names Kirsten Revitte, PA-C, on its website. Verified Injector matched this clinician to license 6491 at the Colorado Department of Regulatory Agencies, which that board recorded as Active when checked September 20, 2026.

Brenda Winski, NP-C, NP

Verification result: Current license matched

Colorado Professional License: Active

No role stated by the clinic

  • License #997988
  • Expires September 30, 2026
  • NPI: 1174711618
  • Primary taxonomy: Nurse Practitioner
  • Verified September 20, 2026
View verification evidence

Clinic-reported

Clinic-stated role
No role stated on the pages reviewed
Credential
NP-C, NP
Named as medical director
Not stated
Named as an injector
Not stated on the pages reviewed
Clinic source
k2derm.com/about-us
Date checked
September 30, 2026
Brenda Winski NP-C

Federal provider record

NPI
1174711618
Primary taxonomy
Nurse Practitioner
Date checked
September 20, 2026

State professional license

Credential
NP-C, NP
State license
Colorado Department of Regulatory Agencies
License number
997988
Status
Active
Expires
2026-09-30
Checked
September 20, 2026

Board action recorded: Not published by this board.

Brenda Winski; License: 997988; Status: Active; Specialty: Family; Expires: 09/30/2026 12:00:00 AM; City: Longmont

State data published September 1, 2026.

Verification finding

Result
Current license matched (Active)

K2 Dermatology names Brenda Winski, NP-C, NP, on its website. Verified Injector matched this clinician to license 997988 at the Colorado Department of Regulatory Agencies, which that board recorded as Active when checked September 20, 2026.

Zoe Nikitas, PA-C, PA

Verification result: Current license matched

Colorado Professional License: Active

No role stated by the clinic

  • License #9387
  • Expires January 31, 2028
  • NPI: No NPI record matched
  • Verified September 20, 2026
View verification evidence

Clinic-reported

Clinic-stated role
No role stated on the pages reviewed
Credential
PA-C, PA
Named as medical director
Not stated
Named as an injector
Not stated on the pages reviewed
Clinic source
k2derm.com/about-us
Date checked
September 30, 2026
Zoe Nikitas PA-C

Federal provider record

No NPI record was matched for this name. Clinicians with this credential usually hold an NPI, but the name on the clinic's website may be written differently in the registry, and an NPI is a billing identifier that says nothing about the state license check below.

State professional license

Credential
PA-C, PA
State license
Colorado Department of Regulatory Agencies
License number
9387
Status
Active
Expires
2028-01-31
Checked
September 20, 2026

Board action recorded: Not published by this board.

Zoe Nikitas; License: 9387; Status: Active; Expires: 01/31/2028 12:00:00 AM; City: Concord

State data published September 1, 2026.

Verification finding

Result
Current license matched (Active)

K2 Dermatology names Zoe Nikitas, PA-C, PA, on its website. Verified Injector matched this clinician to license 9387 at the Colorado Department of Regulatory Agencies, which that board recorded as Active when checked September 20, 2026.

What Verified Means for K2 Dermatology

6 of 6 named clinicians matched to current Colorado professional license records.

Last checked: September 20, 2026

K2 Dermatology met Verified Injector's verification rule when checked on September 20, 2026: every clinician it names with a medical or nursing credential, or whom it calls Dr., matched a current state license record, and a physician license was matched.

What We Checked

  • We read the clinic's own website.
  • We identify the clinicians it publicly names.
  • We check each one who holds a medical or nursing credential, or whom the clinic calls Dr., against the state licensing board's records.

Staff without a medical or nursing credential, such as aestheticians, are not checked, and we do not verify anyone the clinic does not name.

What Verification Does Not Mean

  • It does not evaluate clinical skill, judgement or technique.
  • It does not evaluate treatment outcomes or patient experience.
  • It does not guarantee the safety or quality of any treatment.
  • It does not cover anyone the clinic does not name on its website.
  • It does not report disciplinary history beyond what the licensing board's own record shows.

How verification works

Sources Used for K2 Dermatology

K2 Dermatology Website

Used for: clinic identity, clinician names, clinic-stated credentials, clinic-stated roles, the services listed, opening hours, phone number, booking link

Checked Sep. 30, 2026

Colorado Department of Regulatory Agencies

Used for: license credential, license number, license status, expiration

Checked Sep. 20, 2026 · Published Sep. 1, 2026

National Plan and Provider Enumeration System

Used for: identity confirmation, the NPI, the primary taxonomy

Checked Sep. 20, 2026

NPI data is used for identity confirmation and provider taxonomy. It does not independently establish that a clinician works at a particular clinic or location.

K2 Dermatology Clinic Information

Clinic
K2 Dermatology
Business type
Physician practice
Address
3434 47th Street, Suite 200, Boulder, CO 80301
City
Boulder
State
Colorado
Market
Denver Area
Website
k2derm.com
Phone
(303) 444-8100
Medical Director
Not stated by clinic

Other Verified Medical Spas near Boulder, Colorado

View all medical spas in Boulder, Colorado