Dr. Steve S. Lee, DO
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 3,380
- Publications
- 1
- Clinical trials
- 1
- Hospital affiliations
- 1
- Practice address
- 9965 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente - Fontana Medical Center
Fontana, California
Find Dr. Lee'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. Steve S. Lee is a rheumatologist in Fontana, California
Dr. Lee practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.
Dr. Lee's NPI, 1336206358, was assigned on January 2, 2007. Dr. Lee graduated from WesternU College of Osteopathic Medicine of the Pacific in 2002. Dr. Lee holds California license 2OA8551.
- NPI
- 1336206358NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234297342
- NPI enumeration date
- January 2, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Steve S. Lee practices at Kaiser Permanente - Fontana Medical Center in Fontana, California
Dr. Lee's primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Kaiser Permanente - Fontana Medical Center9965 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Steve S. Lee is affiliated with 3 sites of care and 1 medical group
Dr. Lee's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dr. Lee is also affiliated with Fontana Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Lee to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Steve S. Lee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lee practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente - Fontana Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Steve S. Lee is one of 821 rheumatologists in California
Rheumatology is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Lee is board certified in rheumatology by the American Board of Internal Medicine. Dr. Lee is licensed in California.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
Clinical focus
Dmand AI lists rheumatoid arthritis among the conditions Dr. Lee treats.
Rheumatologists near Dr. Lee
Counts of rheumatologists 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. Steve S. Lee treated 12 Medicare patients in 2024, average age 64
CMS counts 12 Medicare patients who saw Dr. Lee in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lee's median patient age at 55, with 83% women.
Dr. Lee's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lee's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women83%
- Men17%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Steve S. Lee wrote 3,380 Medicare Part D claims in 2024
In 2024, Dr. Lee wrote 3,380 Medicare Part D claims for 637 patients. 79% of them were for generic drugs. CMS names the drug for 3,239 of them, across 33 drugs with 11 or more claims each, at $1,935,506 in total drug cost. In 2023, CMS named 3,011 claims across 33 drugs.
Dr. Lee's Part D claims by kind of drug, 2024
- Generic2,656 claims79%
- Brand-name702 claims21%
- Other22 claims1%
Dr. Lee'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. Lee's Part D claims, 2024
- Opioids4%130 of 3,380 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: 3,0112024: 3,2398%
Drugs named by CMS: 33 in 2024, 33 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
How Dr. Steve S. Lee takes part in Medicare
Dr. Lee accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Steve S. Lee has 1 publication on record
Dmand AI links 1 paper to Dr. Lee in 2015. Dr. Lee's most frequent co-authors are Frew H. Gebreab, MD, Mario Lauro Perez, DO and Emily H. Tang, MD.
Dr. Lee's most frequent co-authors
Recent publications by Dr. Lee
See who Dr. Lee researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lee works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Steve S. Lee has worked on 1 clinical trial
Dmand AI links Dr. Lee to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Lupus Erythematosus, Systemic and Connective Tissue Diseases.
Conditions in Dr. Lee's trials
- Lupus Erythematosus, Systemic
- Connective Tissue Diseases
Recent clinical trials with Dr. Lee
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Steve S. Lee received $18,971 in industry payments from 2016 to 2025
CMS Open Payments shows 99 general payments to Dr. Lee from 22 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 53% of the total. Novartis Pharmaceuticals Corporation paid the most, $11,273. It also lists 13 research payments totaling $2,580 from 2019 to 2021.
General payments to Dr. Lee by program year, 2016 to 2025
General payments to Dr. Lee by kind, 2016 to 2025
- Consulting fees$10,06753%
- Food and beverage$7,29238%
- Travel and lodging$1,5518%
- Education$610%
Companies that paid Dr. Lee the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Steve S. Lee has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Lee, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Lee
- 2011
- CMS Stage 1 2012
- Undated
- ACR Fellow
Source: Dmand AI Professional Profile Data
Dr. Steve S. Lee graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Lee graduated from WesternU College of Osteopathic Medicine of the Pacific in 2002. Dr. Lee is a member of ACR.
- Medical school
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Steve S. Lee accepts plans from 2 insurance carriers
Dr. Lee is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Lee accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Steve S. Lee'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Steve S. Lee
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. Steve S. Lee's NPI number?
Dr. Steve S. Lee's NPI number is 1336206358. It was assigned on January 2, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Steve S. Lee?
Dr. Steve S. Lee is a rheumatologist in Fontana, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Steve S. Lee practice?
Dr. Lee practices at 9965 Sierra Ave, Fontana, CA 92335. Dr. Lee's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Lee to 1 group practice or clinic.
What is Dr. Steve S. Lee's office phone number?
The practice phone on file for Dr. Lee is (909) 427-5000.
What is Dr. Steve S. Lee's medical license number?
Dr. Lee holds California license 2OA8551.
Which hospitals is Dr. Steve S. Lee affiliated with?
Dr. Lee is affiliated with Fontana Medical Center.
What medical group is Dr. Steve S. Lee part of?
Dr. Lee is linked to Southern California Permanente Medical Group.
Does Dr. Steve S. Lee accept Medicare?
Yes. CMS lists Dr. Lee as accepting Medicare assignment.
How many Medicare patients does Dr. Steve S. Lee see?
CMS counts 12 Medicare patients who saw Dr. Lee in 2024, with an average age of 64.
Is Dr. Steve S. Lee board certified?
Yes. Dr. Lee is board certified in rheumatology by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
Where did Dr. Steve S. Lee go to medical school?
Dr. Lee graduated from WesternU College of Osteopathic Medicine of the Pacific in 2002.
What drugs does Dr. Steve S. Lee prescribe most?
In 2024 Medicare Part D data, Dr. Lee's most prescribed drugs by claims were Methotrexate, Hydroxychloroquine Sulfate and Prednisone.
Has Dr. Steve S. Lee received payments from drug or device companies?
CMS Open Payments shows $18,971 in general payments to Dr. Lee from 22 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Steve S. Lee been practicing?
Dr. Lee graduated from medical school in 2002, 24 years ago.
Does Dr. Steve S. Lee do research?
Dmand AI links 1 publication to Dr. Lee. Dr. Lee has worked on 1 clinical trial.
Who does Dr. Steve S. Lee publish with?
Dr. Lee's most frequent co-authors are Frew H. Gebreab, MD (1 shared paper), Mario Lauro Perez, DO (1 shared paper) and Emily H. Tang, MD (1 shared paper).
What insurance does Dr. Steve S. Lee accept?
Dr. Lee is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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