John Chalison, MD
NPI 1215977780 · Pulmonary Disease Physician · Los Angeles, CA
John Chalison, MD is a Pulmonary Disease Physician provider in Los Angeles, CA (NPI 1215977780).
Provider details
- NPI number
- 1215977780
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G37835 (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
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
- 2006-06-06
- Last updated
- 2012-03-14
Frequently asked questions
- What is John Chalison's NPI number?
- John Chalison's National Provider Identifier (NPI) is 1215977780, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Chalison's specialty?
- John Chalison is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Chalison located?
- John Chalison's practice location on file with NPPES is 201 S Alvarado St, Los Angeles, CA 90057-2320.
- What is John Chalison's phone number?
- The practice phone number listed in the NPPES registry for John Chalison is (213) 484-2044.
- Is John Chalison's NPI active?
- Yes — John Chalison's NPI (1215977780) is active in the NPPES registry as of the last update on 2012-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.