Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Patrick Robert Dahl, MD

Individual provider Dermatology Physician · NPI 1033213392

Patrick Robert Dahl, MD practises Dermatology in Fullerton, California. Graduated from Stanford University School of Medicine in 1991, 35 years ago. Practices with Accredited Dermatology Medical Clinic Inc, a 2-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
35
Trained at
Stanford University School of Medicine
Licensed in
CA
In the registry since
2006
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

301 W Bastanchury Rd Ste 245
Fullerton, CA 92835 Not confirmed with CMS for 14 years — call before visiting
Phone: (714) 525-3500
Fax: (714) 525-3588
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence G75823 (CA)

Record details

NPI number1033213392
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 8, 2006
Last updated in NPPESAugust 17, 2012

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Also practisesPATHOLOGY
Medical schoolSTANFORD UNIVERSITY SCHOOL OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Accredited Dermatology Medical Clinic Inc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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.

Skin biopsy 488 times · 95th percentile
Removal of skin lesions 1,112 times · 94th percentile
Melanoma (skin cancer) excision 32 times · 81st percentile
Removal of skin cancer 15 times · 10th percentile

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 patients466
Services billed 6,913 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Providence St. Jude Medical Center Hospital · Fullerton, CA

Colleagues at Accredited Dermatology Medical Clinic Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Fullerton