Dr. Christopher James Ryerson, MD
- Publications
- 264
- State license
- 1
- Year NPI issued
- 2009
- Practice address
- 505 Parnassus Ave # M1087, San Francisco, CA 94143-2204
- Practice phone
- Call (514) 283-6357
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Ryerson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Christopher James Ryerson is a pulmonologist in San Francisco, California
Dr. Ryerson practices in San Francisco, California.
Dr. Ryerson's NPI, 1538495635, was assigned on October 23, 2009. Dr. Ryerson holds California license A109442.
- NPI
- 1538495635NPI Registry (opens in a new tab)
- NPI enumeration date
- October 23, 2009
- NPI status
- Active
- Practice phone
- (514) 283-6357
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Christopher James Ryerson's practice address is in San Francisco, California
Dr. Ryerson's practice address in the NPI Registry is 505 Parnassus Ave # M1087, San Francisco, CA 94143-2204. The practice phone is (514) 283-6357.
- NPI Registry address505 Parnassus Ave # M1087, San Francisco, CA 94143-2204Phone(514) 283-6357
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Christopher James Ryerson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ryerson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Ryerson's practice | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Christopher James Ryerson is one of 1,339 pulmonologists in California
Pulmonary disease is Dr. Ryerson's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Ryerson is licensed in California.
Specialties and state licenses
- Pulmonary disease, CaliforniaPrimary
Pulmonologists near Dr. Ryerson
Counts of pulmonologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Christopher James Ryerson has 264 publications on record
Dmand AI links 264 papers to Dr. Ryerson, published from 2010 to 2025. 2021 was the busiest year, with 28. The most frequent topics are Lung Diseases, Interstitial, Idiopathic Pulmonary Fibrosis and Lung. Dr. Ryerson has published most often in Am J Respir Crit Care Med. Dr. Ryerson's most frequent co-authors are Kerri Johannson, MD, Deborah Assayag, MD and Julie Morisset, MD.
Dr. Ryerson's papers by year, 2016 to 2025
Topics Dr. Ryerson writes about most
- Lung Diseases, Interstitial
- Idiopathic Pulmonary Fibrosis
- Lung
- Pulmonary Fibrosis
- Disease Progression
- Tomography, X-Ray Computed
- Canada
- Vital Capacity
Dr. Ryerson's most frequent co-authors
- Kerri Johannson, MD73 shared papers
- Deborah Assayag, MD36 shared papers
- Julie Morisset, MD25 shared papers
Recent publications by Dr. Ryerson
Eur Respir J
See who Dr. Ryerson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ryerson works with, so you can find a warm path to the right pulmonologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. Christopher James Ryerson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Christopher James Ryerson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Christopher James Ryerson's NPI number?
Dr. Christopher James Ryerson's NPI number is 1538495635. It was assigned on October 23, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher James Ryerson?
Dr. Christopher James Ryerson is a pulmonologist in San Francisco, California. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Christopher James Ryerson practice?
Dr. Ryerson practices at 505 Parnassus Ave # M1087, San Francisco, CA 94143-2204.
What is Dr. Christopher James Ryerson's office phone number?
The practice phone on file for Dr. Ryerson is (514) 283-6357.
What is Dr. Christopher James Ryerson's medical license number?
Dr. Ryerson holds California license A109442.
How long has Dr. Christopher James Ryerson been practicing?
Dr. Ryerson's NPI was assigned in 2009.
Does Dr. Christopher James Ryerson do research?
Dmand AI links 264 publications to Dr. Ryerson, published from 2010 to 2025.
Who does Dr. Christopher James Ryerson publish with?
Dr. Ryerson's most frequent co-authors are Kerri Johannson, MD (73 shared papers), Deborah Assayag, MD (36 shared papers) and Julie Morisset, MD (25 shared papers).
Selling to pulmonary disease practices?
See pulmonologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card