John R. Nienow, M.D., Inc
NPI 1134498165 · Internal Medicine Physician · Sacramento, CA
John R. Nienow, M.D., Inc is a Internal Medicine Physician organization in Sacramento, CA (NPI 1134498165).
Provider details
- NPI number
- 1134498165
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- John Nienow, President(916) 679-3693
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
14 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
- 2011-12-20
- Last updated
- 2011-12-20
Frequently asked questions
- What is John R. Nienow, M.D., Inc's NPI number?
- John R. Nienow, M.D., Inc's National Provider Identifier (NPI) is 1134498165, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John R. Nienow, M.D., Inc?
- John R. Nienow, M.D., Inc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John R. Nienow, M.D., Inc located?
- John R. Nienow, M.D., Inc's practice location on file with NPPES is 500 University Ave, Sacramento, CA 95825-6504.
- What is John R. Nienow, M.D., Inc's phone number?
- The practice phone number listed in the NPPES registry for John R. Nienow, M.D., Inc is (916) 679-3693.
- Who is the authorized official for John R. Nienow, M.D., Inc?
- The authorized official listed on John R. Nienow, M.D., Inc's NPPES record is John Nienow, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John R. Nienow, M.D., Inc's NPI active?
- Yes — John R. Nienow, M.D., Inc's NPI (1134498165) is active in the NPPES registry as of the last update on 2011-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.