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

Matthew Werner Muellenhoff, DO

Individual provider Procedural Dermatology Physician · NPI 1740280650

Matthew Werner Muellenhoff, DO is a Dermatology in Grass Valley, California. Qualified in 2000, 26 years ago. Practices with Sierra Derm Inc, a 2-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
26
Licensed in
CA
In the registry since
2005
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

126 Glasson Way
Grass Valley, CA 95945-5706
Phone: (530) 272-2303
Fax: (530) 272-9648
Show map & directions

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

Specialties & licences

Procedural Dermatology Physician (primary) Taxonomy 207NS0135X · Licence 20A7904 (CA)
Dermatology Physician Taxonomy 207N00000X · Licence 20A7904 (CA)

Record details

NPI number1740280650
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedJuly 21, 2005
Last updated in NPPESApril 8, 2013
Mailing address126 Glasson Way, Grass Valley, CA 95945-5706

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Sierra Derm Inc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount