OrganizationActive
John R Chalison MD a Medical Corporation
NPI 1063459477 · Pulmonary Disease Physician · Los Angeles, CA
Provider details
- NPI number
- 1063459477
- Entity type
- Organization
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- John Chalison, Owner(213) 977-2121
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(95/100 index)
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
2 documented practice locations
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
616 Witmer St
Los Angeles, CA 90017-2308
Phone: (213) 977-2121
Street-level locationGet directions
Mailing address
Po Box 7096
Stockton, CA 95267-0096
Additional practice locations (1)
- 2131 W 3rd StLos Angeles, CA 90057-1901Phone: (213) 484-7111
Registry dates
- Enumerated
- 2006-06-02
- Last updated
- 2018-05-11
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.