Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Douglas E Puffer, MD

Individual provider Hematology & Oncology Physician · NPI 1366463267

Douglas E Puffer, MD is a Hematology/Oncology in Mequon, Wisconsin. Graduated from Ohio State University College of Medicine in 1997, 29 years ago. Practices with Columbia St Marys Hospital Milwaukee Inc, a 314-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
29
Trained at
Ohio State University College of Medicine
Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

13111 N Port Washington Rd
Mequon, WI 53097-2416
Phone: (262) 243-7454
Fax: (262) 243-7482
Show map & directions

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

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 40365-020 (WI)

Record details

NPI number1366463267
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 23, 2006
Last updated in NPPESOctober 22, 2012
Mailing address4425 N Port Washington Road, Csmcp Clinic Credentialing, Glendale, WI 53212-1082

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Columbia St Marys Hospital Milwaukee Inc — 314 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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