Joy Wan, MD

Individual provider Pediatric Dermatology Physician · NPI 1235498346

Joy Wan, MD practises Dermatology in Baltimore, Maryland. Graduated from Perelman School of Med at the University of Pennsylvania in 2012, 14 years ago. Practices with Johns Hopkins University, a 2,855-clinician group and works from 3 locations. Licensed in Maryland.

Years since qualifying: 14
Trained at: Perelman School of Med at the University of Pennsylvania
Licensed in: MD
In the registry since: 2012
Specialties on file: 2

What do these letters mean?

MD — Doctor of Medicine: A physician who completed allopathic medical school.

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Practice location Address checks out

1800 Orleans St
Baltimore, MD 21287-0010
Phone: (410) 955-0000
Fax: (410) 328-6896

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

3401 Civic Center Blvd, Philadelphia, PA 19104-4319 — (215) 590-9119
3600 Spruce St, Philadelphia, PA 19104-4211 — (215) 662-2200

Specialties & licences

Dermatology Physician (primary)	Taxonomy 207N00000X · Licence D92477 (MD)
Pediatric Dermatology Physician	Taxonomy 207NP0225X · Licence D92477 (MD)

Record details

NPI number	1235498346
Entity type	Individual (Type 1)
Gender	Female
Credentials	MD
Sole proprietor	No
NPI enumerated	May 9, 2012
Last updated in NPPES	March 16, 2026
Certification date	March 16, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialty	DERMATOLOGY
Medical school	PERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated	2012 (14 years in practice)
Group practice	Johns Hopkins University — 2855 clinicians
Accepts Medicare assignment	Not indicated
Practice locations	3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions	1–10 times
Skin biopsy	1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients	33
Services billed	51 a service is one billed item, such as a visit, a test or a procedure
Average patient age	71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Johns Hopkins University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2855 clinicians in the practice; 12 are shown here.

MS. Christine Dianne Brewer Adult Health Nurse Practitioner · Baltimore, MD
Dr. Nicolette Carnahan, PHD Clinical Neuropsychologist · Baltimore, MD
Dr. Susan Dhamala, MD Student in an Organized Health Care Education/Training Program · Baltimore, MD
Dr. Sudhir K Dutta, MD Internal Medicine Physician · Nottingham, MD
David Simon Feigin, MD Diagnostic Radiology Physician · Baltimore, MD
Christina Tamargo Gaine, MD Nephrology Physician · Baltimore, MD
Dr. Andrew Hoover Karaba, MD, PHD Internal Medicine Physician · Baltimore, MD
Moon Jeong Lee, MD Ophthalmology Physician · Philadelphia, PA
Doris Lin, MD, PHD Diagnostic Radiology Physician · Baltimore, MD
Pamela Lipsett, MD Critical Care Medicine (Anesthesiology) Physician · Baltimore, MD
Dr. Uri Simcha Soiberman, MD Ophthalmology Physician · Baltimore, MD
Dr. Sandeep Nagaraj Wontakal, MD, PHD Molecular Genetic Pathology (Pathology) Physician · Baltimore, MD

Other providers in Baltimore

Dr. Teri April Kahn, MD

Individual Pediatric Dermatology Physician · NPI 1629217237

1708 W Rogers Ave Attn: Finance, Baltimore, MD 21209-4545 · (410) 578-8600
Dr. Katherine Brown Puttgen, MD

Individual Pediatric Dermatology Physician · NPI 1275747529

Harriet Lane Childrens Bldg 200 North Wolfe Street Lowr Level, Baltimore, MD 21287-0001 · (410) 955-2049

Joy Wan, MD

Practice location Address checks out

Additional practice locations (2)

Specialties & licences

Record details

Medicare enrollment

Procedures

Medicare patients and services, 2024

Colleagues at Johns Hopkins University

Other providers in Baltimore

Dr. Teri April Kahn, MD

Dr. Katherine Brown Puttgen, MD