Rolf G Sommerhaug M.D., Professional Corporation
NPI 1659440063 · Surgery Physician · Concord, CA
Rolf G Sommerhaug M.D., Professional Corporation is a Surgery Physician organization in Concord, CA (NPI 1659440063).
Provider details
- NPI number
- 1659440063
- Entity type
- Organization
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jackie Klisiewicz, Business Manager(925) 676-2600
- License
- C33714 (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
- 2006-11-07
- Last updated
- 2020-08-22
Frequently asked questions
- What is Rolf G Sommerhaug M.D., Professional Corporation's NPI number?
- Rolf G Sommerhaug M.D., Professional Corporation's National Provider Identifier (NPI) is 1659440063, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Rolf G Sommerhaug M.D., Professional Corporation?
- Rolf G Sommerhaug M.D., Professional Corporation is classified in the NPPES registry as Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Rolf G Sommerhaug M.D., Professional Corporation located?
- Rolf G Sommerhaug M.D., Professional Corporation's practice location on file with NPPES is 2485 High School Ave., Concord, CA 94520.
- What is Rolf G Sommerhaug M.D., Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Rolf G Sommerhaug M.D., Professional Corporation is (925) 676-2600.
- Who is the authorized official for Rolf G Sommerhaug M.D., Professional Corporation?
- The authorized official listed on Rolf G Sommerhaug M.D., Professional Corporation's NPPES record is Jackie Klisiewicz, Business Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Rolf G Sommerhaug M.D., Professional Corporation's NPI active?
- Yes — Rolf G Sommerhaug M.D., Professional Corporation's NPI (1659440063) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.