John Groblewski, CRNA
NPI 1558312108 · Certified Registered Nurse Anesthetist · Los Angeles, CA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Groblewski, CRNA is a Certified Registered Nurse Anesthetist provider in Los Angeles, CA (NPI 1558312108).
Provider details
- NPI number
- 1558312108
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2490 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-05-16
- Last updated
- 2021-12-02
- Certified
- 2021-12-02
Frequently asked questions
- What is John Groblewski's NPI number?
- John Groblewski's National Provider Identifier (NPI) is 1558312108, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Groblewski's specialty?
- John Groblewski is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Groblewski located?
- John Groblewski's practice location on file with NPPES is 1711 W Temple St, Los Angeles, CA 90026-5421.
- What is John Groblewski's phone number?
- The practice phone number listed in the NPPES registry for John Groblewski is (213) 989-6100.
- Does John Groblewski accept Medicare?
- John Groblewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Groblewski's NPI active?
- Yes — John Groblewski's NPI (1558312108) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.