Physician Profile
Justin M. Ko, MD
Unclaimed ProfileAbout Dr. Ko
Justin M. Ko, MD practices dermatology in Stanford, CA. Justin is a 2008 graduate of Tufts University School of Medicine. Medicare claims data shows Justin provided 212 services to 116 patients. The services billed most often include destruction of precancer skin growth, 2-14 growths, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (650) 723-4000
- Email not available
Practice Locations
300 PASTEUR DR
Stanford, CA 94305
440 Broadway St Fl B4
Redwood City, CA 94063
Conditions Commonly Evaluated or Treated
Within Dermatology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acne
- Eczema
- Hair loss
- Melanoma
- Precancerous sun spot
- Psoriasis
- Rosacea
- Skin cancer
Acne and follicular disorders
Eczema and inflammatory skin disease
- Seborrheic dermatitis
Infections and infestations
- Cellulitis
- Foot fungus
- Herpes simplex of the skin
- Molluscum contagiosum
- Scabies
- Shingles
- Warts
Pigment, growths, and benign lesions
Skin cancer
Urticaria, itch, and vascular
Autoimmune and connective tissue
Infections
- Ringworm
Rashes & allergy
- Poison Ivy
Skin growths
Procedures & services
Most searched procedures
- Botox
- Chemical peel
- Laser hair removal
- Microneedling
- Mole removal
- Skin cancer screening
Diagnostic procedures
Lesion treatment
- Complex skin lesion excision
- Cryotherapy for skin lesions
- Electrodesiccation and curettage
- Incision and drainage of an abscess
Medical dermatology treatment
Cosmetic
Cosmetic and minor surgery
Cosmetic dermatology
Diagnostic
General dermatology
Infections
- Wart Removal
Medical dermatology
Nails & hair
Skin cancer surgery
Skin growths
- Cyst Removal
- Lipoma removal
- Skin Tag Removal
- Steroid injection for keloids
Procedures Most Often Billed to Medicare
212 services · 116 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
89 | |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
26 | |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
12 | |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
43 | |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
29 | |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
13 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other dermatologists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other dermatologists in Stanford 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at Tufts University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Destruction of precancer skin growth, 2-14 growths 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Ko specialize in?
Dr. Ko is a dermatologist (skin doctor) in Stanford, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Dermatology”.
NPI registry
Where is Dr. Ko located?
Dr. Ko is listed at 300 Pasteur Dr, Stanford, CA 94305. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Ko's phone number?
The number on file is (650) 723-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Ko?
Dr. Ko's National Provider Identifier is 1790912251. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Ko go to medical school?
Dr. Ko attended Tufts University School of Medicine, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Ko have?
Dr. Ko has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Ko do most often?
According to Medicare billing data, Dr. Ko performs procedures including destruction of precancer skin growth, 2-14 growths, destruction of precancer skin growth, 1 growth and biopsy of related skin growth, first growth, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Ko's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ko. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.