Dr. John P. Ryan, MD
- Publications
- 82
- Industry payments
- $20
- State license
- 1
- Year NPI issued
- 2016
- Practice address
- 330 Borthwick Ave, Portsmouth, NH 03801
- Practice phone
- Call (603) 436-7171
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pediatric Associates of Hampton & Portsmouth
Portsmouth, New Hampshire
Find Dr. Ryan'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. John P. Ryan is a pediatrician in Portsmouth, New Hampshire
Dr. Ryan practices at Pediatric Associates of Hampton & Portsmouth in Portsmouth, New Hampshire.
Dr. Ryan's NPI, 1487016622, was assigned on March 27, 2016. Dr. Ryan holds New Hampshire license 21475.
- NPI
- 1487016622NPI Registry (opens in a new tab)
- NPI enumeration date
- March 27, 2016
- NPI status
- Active
- Practice phone
- (603) 436-7171
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John P. Ryan practices at Pediatric Associates of Hampton & Portsmouth in Portsmouth, New Hampshire
Dr. Ryan's primary practice is Pediatric Associates of Hampton & Portsmouth, at 330 Borthwick Ave, Portsmouth, NH 03801 in Rockingham County. The practice phone is (603) 436-7171.
- Pediatric Associates of Hampton & Portsmouth330 Borthwick Ave, Portsmouth, NH 03801 · Rockingham CountyPhone(603) 436-7171
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John P. Ryan is affiliated with 1 site of care
Dr. Ryan's primary practice is Pediatric Associates of Hampton & Portsmouth in Portsmouth, New Hampshire.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John P. Ryan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ryan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pediatric Associates of Hampton & Portsmouth | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John P. Ryan is one of 265 pediatricians in New Hampshire
Pediatrics is Dr. Ryan's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Ryan is licensed in New Hampshire.
Specialties and state licenses
- Pediatrics, New HampshirePrimary
Pediatricians near Dr. Ryan
Counts of pediatricians 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. John P. Ryan's patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Dr. Ryan's median patient age at 10, with 35% women.
Dr. Ryan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women35%
- Men64%
Source: Dmand AI Patient Panel Data
Dr. John P. Ryan has 82 publications on record
Dmand AI links 82 papers to Dr. Ryan, published from 2010 to 2025. 2023 was the busiest year, with 12. The most frequent topics are Lung Transplantation, Extracorporeal Membrane Oxygenation and Graft Survival. Dr. Ryan has published most often in Clin Transplant. Dr. Ryan's most frequent co-authors are Pablo G. Sanchez, MD, Masashi Furukawa and John Joseph Ryan, BAO, BCH, MB.
Dr. Ryan's papers by year, 2016 to 2025
Topics Dr. Ryan writes about most
- Lung Transplantation
- Extracorporeal Membrane Oxygenation
- Graft Survival
- Lung
- Magnetic Resonance Imaging
- California
- Ecosystem
- Brain
Dr. Ryan's most frequent co-authors
- Pablo G. Sanchez, MD23 shared papers
- Masashi Furukawa21 shared papers
- John Joseph Ryan, BAO, BCH, MB19 shared papers
Recent publications by Dr. Ryan
See who Dr. Ryan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ryan works with, so you can find a warm path to the right pediatricians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John P. Ryan received $20 in industry payments from 2021 to 2023
CMS Open Payments shows 2 general payments to Dr. Ryan from 2 drug and device companies from 2021 to 2023. Food and beverage make up the largest share, 100% of the total. Ironshore Pharmaceuticals Inc. paid the most, $12.
General payments to Dr. Ryan by program year, 2021 to 2023
Companies that paid Dr. Ryan the most, 2021 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John P. Ryan'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. John P. Ryan
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What is Dr. John P. Ryan's NPI number?
Dr. John P. Ryan's NPI number is 1487016622. It was assigned on March 27, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. John P. Ryan?
Dr. John P. Ryan is a pediatrician in Portsmouth, New Hampshire. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. John P. Ryan practice?
Dr. Ryan practices at 330 Borthwick Ave, Portsmouth, NH 03801. Dr. Ryan's primary practice is Pediatric Associates of Hampton & Portsmouth in Portsmouth, New Hampshire.
What is Dr. John P. Ryan's office phone number?
The practice phone on file for Dr. Ryan is (603) 436-7171.
What is Dr. John P. Ryan's medical license number?
Dr. Ryan holds New Hampshire license 21475.
Has Dr. John P. Ryan received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Dr. Ryan from 2 companies from 2021 to 2023. The largest total came from Ironshore Pharmaceuticals Inc.
How long has Dr. John P. Ryan been practicing?
Dr. Ryan's NPI was assigned in 2016.
Does Dr. John P. Ryan do research?
Dmand AI links 82 publications to Dr. Ryan, published from 2010 to 2025.
Who does Dr. John P. Ryan publish with?
Dr. Ryan's most frequent co-authors are Pablo G. Sanchez, MD (23 shared papers), Masashi Furukawa (21 shared papers) and John Joseph Ryan, BAO, BCH, MB (19 shared papers).
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