Physician Profile
Mark A. Willoughby, M.D.
Unclaimed ProfileAbout Dr. Willoughby
Mark A. Willoughby, M.D. practices dermatology in Chula Vista, CA. Mark is a 1997 graduate of Ohio State University College of Medicine. Medicare claims data shows Mark provided 22,529 services to 3,488 patients. The services billed most often include aminolevulinic acid hcl for topical administration, 10% gel, 10 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and destruction of precancer skin growth, 2-14 growths.
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
Source: NPPES NPI Registry
Contact Information
- (619) 476-1200
- Email not available
Practice Locations
319 F ST STE 102
Chula Vista, CA 91910
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
- Folliculitis
- Hidradenitis suppurativa
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
- Melasma
- Seborrheic keratosis
Skin cancer
- Basal cell skin cancer
- Squamous cell skin cancer
Urticaria, itch, and vascular
- Chronic itching
- Excessive sweating
- Hives
Autoimmune and connective tissue
- Vitiligo
Infections
- Ringworm
Rashes & allergy
- Poison Ivy
Skin growths
- Keloid scars
Procedures & services
Most searched procedures
- Botox
- Chemical peel
- Laser hair removal
- Microneedling
- Mole removal
- Skin cancer screening
Diagnostic procedures
- Patch testing
- Skin biopsy
Lesion treatment
- Complex skin lesion excision
- Cryotherapy for skin lesions
- Electrodesiccation and curettage
- Incision and drainage of an abscess
Medical dermatology treatment
- Botulinum toxin treatment for excessive sweating
Cosmetic
- Acne scar treatment
- Dermal fillers
- Sclerotherapy
- Tattoo removal
Cosmetic and minor surgery
- Sun spot removal
Cosmetic dermatology
- Laser skin resurfacing
- Laser treatment of vascular lesions
Diagnostic
- Mole mapping
- Skin scraping test
General dermatology
- Biologic drug management
- Cortisone shot for cysts
Infections
- Wart Removal
Medical dermatology
- Light Therapy
Nails & hair
- Ingrown toenail removal
Skin cancer surgery
- Mohs surgery
Skin growths
- Cyst Removal
- Lipoma removal
- Skin Tag Removal
- Steroid injection for keloids
Procedures Most Often Billed to Medicare
22,529 services · 3,488 patients · 24 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
1,164 |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
495 |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
440 |
| Destruction of precancer skin growth, 15 or more growths | Procedure | 17004 |
209 |
| Biopsy of related skin growth, each additional growth | Procedure | 11103 |
137 |
| Injection into skin growth, more than 7 growths | Procedure | 11901 |
51 |
| Injection into skin growth, 1-7 growths | Procedure | 11900 |
51 |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | Procedure | 12032 |
30 |
| Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm | Procedure | 11602 |
29 |
| Complicated repair of wound of trunk, 2.6-7.5 cm | Procedure | 13101 |
28 |
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 2
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 Chula Vista 6
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Ohio State University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Ohio State University College 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 Mark A. Willoughby specialize in?
Mark A. Willoughby is a dermatologist (skin doctor) in Chula Vista, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Dermatology”.
NPI registry
Where is Mark A. Willoughby located?
Mark A. Willoughby is listed at 319 F St Ste 102, Chula Vista, CA 91910. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mark A. Willoughby's phone number?
The number on file is (619) 476-1200. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Mark A. Willoughby?
Mark A. Willoughby's National Provider Identifier is 1215931993. 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 Mark A. Willoughby train?
Mark A. Willoughby attended Ohio State University College of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mark A. Willoughby have?
Mark A. Willoughby has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Mark A. Willoughby do most often?
According to Medicare billing data, Mark A. Willoughby performs procedures including destruction of precancer skin growth, 2-14 growths, biopsy of related skin growth, first growth and destruction of precancer skin growth, 1 growth; reads or performs imaging such as obtaining data needed to develop the optimal radiation treatment, 1 treatment area and use of externally generated heat to increase temperature of cancer cell, heating to depths 4.0 cm or less; provides treatments such as application of ultraviolet light to skin and application of light with debridement to destroy precancer skin growth, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Mark A. Willoughby's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mark A. Willoughby. 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.