Sierra Derm Inc.
NPI 1700818903 · Dermatology Physician · Grass Valley, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sierra Derm Inc. is a Dermatology Physician organization in Grass Valley, CA (NPI 1700818903).
Provider details
- NPI number
- 1700818903
- Entity type
- Organization
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Matthew Muellenhoff, Owner(530) 272-2303
- License
- 20A79040 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-07
- Last updated
- 2013-02-12
Frequently asked questions
- What is Sierra Derm Inc.'s NPI number?
- Sierra Derm Inc.'s National Provider Identifier (NPI) is 1700818903, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sierra Derm Inc.?
- Sierra Derm Inc. is classified in the NPPES registry as Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Sierra Derm Inc. located?
- Sierra Derm Inc.'s practice location on file with NPPES is 126 Glasson Way, Grass Valley, CA 95945-5706.
- What is Sierra Derm Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Sierra Derm Inc. is (530) 272-2303.
- Does Sierra Derm Inc. accept Medicare?
- Sierra Derm Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Sierra Derm Inc.?
- The authorized official listed on Sierra Derm Inc.'s NPPES record is Matthew Muellenhoff, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sierra Derm Inc.'s NPI active?
- Yes — Sierra Derm Inc.'s NPI (1700818903) is active in the NPPES registry as of the last update on 2013-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.