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Dr. Ryan Lloyd Stevenson, MD
NPI1134378615PAC ID8426228743
- Medicare services, 2016
- 364
- Part D claims, 2024
- 1,606
- Publications
- 6
- Hospital affiliations
- 1
- Industry payments
- $108
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. Stevenson's professional email, personal email and mobile number
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Dr. Ryan Lloyd Stevenson is an internist in Stockton, California
Dr. Stevenson practices at Permanente Medical Group Inc in Stockton, California.
Dr. Stevenson's NPI, 1134378615, was assigned on September 9, 2008. Dr. Stevenson graduated from Cleveland Medical College, Homeopathic in 2008. Dr. Stevenson's Massachusetts license number on file is 247397.
NPI and contact details
- NPI
- 1134378615NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426228743
- NPI enumeration date
- September 9, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan Lloyd Stevenson practices at Permanente Medical Group Inc in Stockton, California
Dr. Stevenson's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ryan Lloyd Stevenson is affiliated with 2 sites of care and 1 medical group
Dr. Stevenson's primary practice is Permanente Medical Group Inc in Stockton, California. Dr. Stevenson is also affiliated with Tufts Medical Center. The medical group on file is The Permanente Medical Group, Inc.
Permanente Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ryan Lloyd Stevenson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stevenson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan Lloyd Stevenson is one of 16,751 internists in California
Internal medicine is Dr. Stevenson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Stevenson is board certified in hematology by the American Board of Internal Medicine. Dmand AI has Dr. Stevenson's licenses on file in 3 states: Massachusetts, California and Rhode Island.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
- California license
- Rhode Island license
Clinical focus
Dmand AI lists lung cancer and prostate cancer among the conditions Dr. Stevenson treats.
Internists near Dr. Stevenson
Counts of internists 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. Ryan Lloyd Stevenson billed Medicare for 364 services in 2016
CMS data shows 364 Medicare services from Dr. Stevenson across 7 procedure codes in 2016. Medicare paid $24,493 for them.
Medicare services, 2016364
Paid by Medicare$24,493
Procedure codes7
Where Dr. Stevenson's Medicare services took place, 2016
- In an office28277%
- In a facility8223%
Dr. Stevenson compared with the California median for internists, 2016
- Dr. Stevenson
- California median
- Medicare services
- 364vs 361Close to median
- Part D claims
- 1,349vs 4213.2 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Stevenson's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Stevenson?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Stevenson and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan Lloyd Stevenson's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Stevenson's median patient age at 66, with 53% women.
Dr. Stevenson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women53%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Ryan Lloyd Stevenson wrote 1,606 Medicare Part D claims in 2024
In 2024, Dr. Stevenson wrote 1,606 Medicare Part D claims for 219 patients. 83% of them were for generic drugs. CMS names the drug for 1,349 of them, across 26 drugs with 11 or more claims each, at $4,523,704 in total drug cost. In 2023, CMS named 1,188 claims across 28 drugs.
Part D claims, 20241,606
Drugs named by CMS26
Total drug cost$4.5M
Part D patients219
Dr. Stevenson's Part D claims by kind of drug, 2024
- Generic1,329 claims83%
- Brand-name and other277 claims17%
Dr. Stevenson's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Stevenson's Part D claims, 2024
- Opioids7%107 of 1,606 claims
- Antibiotics2%37 of 1,606 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1882024: 1,34914%
Drugs named by CMS: 26 in 2024, 28 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ryan Lloyd Stevenson offers telehealth to Medicare patients
Dr. Stevenson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Stevenson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ryan Lloyd Stevenson has 6 publications on record
Dmand AI links 6 papers to Dr. Stevenson, published from 2013 to 2020. 2013 was the busiest year, with 2. The most frequent topics are Antineoplastic Agents, Everolimus and Gastrointestinal Neoplasms. Dr. Stevenson has published most often in JOP. Dr. Stevenson's most frequent co-authors are Layla Nohelia Van Doren, MD, Sally Arai, MD and Edward Joseph Damrose, MD.
Papers6
Years published2013 to 2020
Dr. Stevenson's papers by year, 2013 to 2020
Topics Dr. Stevenson writes about most
- Antineoplastic Agents
- Everolimus
- Gastrointestinal Neoplasms
- Neuroendocrine Tumors
- Pancreatic Neoplasms
- Platelet Aggregation Inhibitors
- Receptors, Thrombin
- Sirolimus
Dr. Stevenson's most frequent co-authors
- Layla Nohelia Van Doren, MD2 shared papers
- Sally Arai, MD1 shared paper
- Edward Joseph Damrose, MD1 shared paper
Recent publications by Dr. Stevenson
AntithrombinsHirudinsPeptide Fragments
AutoantibodiesBlood Coagulation Factor InhibitorsEpitopes
Antineoplastic AgentsClinical Trials, Phase III as TopicDrugs, Investigational
Antineoplastic AgentsBiomarkers, PharmacologicalBiomarkers, Tumor
See who Dr. Stevenson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Stevenson works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ryan Lloyd Stevenson received $108 in industry payments from 2018 to 2025
CMS Open Payments shows 3 general payments to Dr. Stevenson from 3 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $71.
General payments to Dr. Stevenson by program year, 2018 to 2025
Companies that paid Dr. Stevenson the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryan Lloyd Stevenson graduated from Cleveland Medical College, Homeopathic
Dr. Stevenson graduated from Cleveland Medical College, Homeopathic in 2008.
- Medical school
- Board certified in hematology
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Ryan Lloyd Stevenson accepts plans from 3 insurance carriers
Dr. Stevenson is in network with 3 carriers, including Kaiser Permanente, CMS Medicare and RI State Medicaid. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
- RI State Medicaid
Plan types Dr. Stevenson accepts, by number of carriers
- EPO1
- HMO1
- Medicaid1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ryan Lloyd Stevenson'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 DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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. Ryan Lloyd Stevenson
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. Ryan Lloyd Stevenson's NPI number?
Dr. Ryan Lloyd Stevenson's NPI number is 1134378615. It was assigned on September 9, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Lloyd Stevenson?
Dr. Ryan Lloyd Stevenson is an internist in Stockton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ryan Lloyd Stevenson practice?
Dr. Stevenson practices at 7373 West Ln, Stockton, CA 95210. Dr. Stevenson's primary practice is Permanente Medical Group Inc in Stockton, California.
What is Dr. Ryan Lloyd Stevenson's office phone number?
The practice phone on file for Dr. Stevenson is (209) 476-2000.
What is Dr. Ryan Lloyd Stevenson's medical license number?
Dr. Stevenson's Massachusetts license number on file is 247397, one of the licenses on file in 3 states.
Which states has Dr. Ryan Lloyd Stevenson been licensed in?
Dmand AI has state licenses on file for Dr. Stevenson in Massachusetts (2011 to 2015), California (2009 to 2026) and Rhode Island (2015 to 2018).
Which hospitals is Dr. Ryan Lloyd Stevenson affiliated with?
Dr. Stevenson is affiliated with Tufts Medical Center.
What medical group is Dr. Ryan Lloyd Stevenson part of?
Dr. Stevenson is linked to The Permanente Medical Group, Inc.
Does Dr. Ryan Lloyd Stevenson accept Medicare?
Yes. CMS data shows Dr. Stevenson billed Medicare for 364 services in 2016, and Dr. Stevenson accepts Medicare assignment.
Does Dr. Ryan Lloyd Stevenson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Stevenson as offering telehealth services.
Show 9 more questionsShow fewer questions
Is Dr. Ryan Lloyd Stevenson board certified?
Yes. Dr. Stevenson is board certified in hematology by the American Board of Internal Medicine.
What services does Dr. Ryan Lloyd Stevenson bill to Medicare?
In 2016, Dr. Stevenson's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99205).
Where did Dr. Ryan Lloyd Stevenson go to medical school?
Dr. Stevenson graduated from Cleveland Medical College, Homeopathic in 2008.
What drugs does Dr. Ryan Lloyd Stevenson prescribe most?
In 2024 Medicare Part D data, Dr. Stevenson's most prescribed drugs by claims were Lenalidomide, Dexamethasone and Prednisone.
Has Dr. Ryan Lloyd Stevenson received payments from drug or device companies?
CMS Open Payments shows $108 in general payments to Dr. Stevenson from 3 companies from 2018 to 2025. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Ryan Lloyd Stevenson been practicing?
Dr. Stevenson graduated from medical school in 2008, 18 years ago.
Does Dr. Ryan Lloyd Stevenson do research?
Dmand AI links 6 publications to Dr. Stevenson, published from 2013 to 2020.
Who does Dr. Ryan Lloyd Stevenson publish with?
Dr. Stevenson's most frequent co-authors are Layla Nohelia Van Doren, MD (2 shared papers), Sally Arai, MD (1 shared paper) and Edward Joseph Damrose, MD (1 shared paper).
What insurance does Dr. Ryan Lloyd Stevenson accept?
Dr. Stevenson is in network with 3 carriers, including Kaiser Permanente, CMS Medicare and RI State Medicaid. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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