IndividualActive
Kristofer Blumberg, RN
NPI 1639523061 · Registered Nurse · San Francisco, CA
Kristofer Blumberg, RN is a Registered Nurse provider in San Francisco, CA (NPI 1639523061).
Provider details
- NPI number
- 1639523061
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Male
- Sole proprietor
- No
- License
- 760697 (CA)
Specialties & taxonomies
Nursing Service Providers
Profile Score
Established profile(72/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
52 Dore St
San Francisco, CA 94103-3828
Phone: (415) 553-3100
Fax: (415) 553-3119
Street-level locationGet directions
Mailing address
368 Fell St
San Francisco, CA 94102-5144
Registry dates
- Enumerated
- 2016-04-21
- Last updated
- 2016-05-07
Frequently asked questions
- What is Kristofer Blumberg's NPI number?
- Kristofer Blumberg's National Provider Identifier (NPI) is 1639523061, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kristofer Blumberg's specialty?
- Kristofer Blumberg is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Kristofer Blumberg located?
- Kristofer Blumberg's practice location on file with NPPES is 52 Dore St, San Francisco, CA 94103-3828.
- What is Kristofer Blumberg's phone number?
- The practice phone number listed in the NPPES registry for Kristofer Blumberg is (415) 553-3100.
- Is Kristofer Blumberg's NPI active?
- Yes — Kristofer Blumberg's NPI (1639523061) is active in the NPPES registry as of the last update on 2016-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.