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

Individual provider MOHS-Micrographic Surgery Physician · NPI 1124133277

David E Geist, MD practises Dermatology in Marlborough, Massachusetts. Graduated from Yale University School of Medicine in 2003, 23 years ago. Practices with Adult and Pediatric Dermatology PC, a 38-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
23
Trained at
Yale University School of Medicine
Licensed in
MA
In the registry since
2006
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

201 Boston Post Rd W Ste 200&202
Marlborough, MA 01752-4667
Phone: (508) 460-9613
Fax: (978) 371-0522
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 86 Baker Avenue Ext Ste 100, Concord, MA 01742-2132 — (978) 371-7010
  • 54 Baker Avenue Ext Ste 305, Concord, MA 01742-2143 — (978) 371-7010
  • 288 Grove St Ste 201, Worcester, MA 01605-3934 — (508) 552-3130

Specialties & licences

MOHS-Micrographic Surgery Physician (primary) Taxonomy 207ND0101X · Licence 226095 (MA)
Dermatology Physician Taxonomy 207N00000X · Licence 226095 (MA)

Record details

NPI number1124133277
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 20, 2006
Last updated in NPPESSeptember 11, 2026
Certification dateSeptember 11, 2026

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice Adult And Pediatric Dermatology Pc — 38 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Melanoma (skin cancer) excision 126 times · 95th percentile
Removal of skin lesions 87 times · 75th percentile
Removal of skin cancer 694 times · 73rd percentile
Skin biopsy 36 times · 67th percentile
Removal of nail tissue 1–10 times
Removal or shaving of skin growth 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 patients556
Services billed 1,839 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.

Colleagues at Adult and Pediatric Dermatology PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 38 clinicians in the practice; 12 are shown here.