Stephen A. Lyon, PA
- Part D claims, 2024
- 43
- Hospital affiliations
- 1
- Medical group
- 1
- Year NPI issued
- 2016
- Practice address
- 4647 Zion Ave, San Diego, CA 92120
- Practice phone
- Call (619) 528-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Stephen Lyon's professional email, personal email and mobile number
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Stephen A. Lyon is a physician assistant in San Diego, California
Stephen Lyon practices at Kaiser Permanente Zion Medical Center in San Diego, California, part of Kaiser Permanente.
Stephen Lyon's NPI, 1477007573, was assigned on August 8, 2016.
- NPI
- 1477007573NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880962919
- NPI enumeration date
- August 8, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (619) 528-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Stephen A. Lyon practices at Kaiser Permanente Zion Medical Center in San Diego, California
Stephen Lyon's primary practice is Kaiser Permanente Zion Medical Center, at 4647 Zion Ave, San Diego, CA 92120 in San Diego County. The practice phone is (619) 528-5000.
- Kaiser Permanente Zion Medical Center4647 Zion Ave, San Diego, CA 92120 · San Diego CountyPhone(619) 528-5000
Source: Dmand AI Affiliation Data
Stephen A. Lyon is affiliated with 1 site of care and 1 medical group
Stephen Lyon's primary practice is Kaiser Permanente Zion Medical Center in San Diego, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Stephen A. Lyon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Stephen Lyon practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Zion Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Stephen A. Lyon is one of 11,482 physician assistants in California
Physician assistant is Stephen Lyon's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
- Surgical physician assistant
Physician assistants near Stephen Lyon
Counts of physician assistants 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
Stephen A. Lyon's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Stephen Lyon's median patient age at 56, with 49% women.
Stephen Lyon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Stephen A. Lyon wrote 43 Medicare Part D claims in 2024
In 2024, Stephen Lyon wrote 43 Medicare Part D claims for 34 patients. 93% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $129 in total drug cost.
Stephen Lyon's Part D claims by kind of drug, 2024
- Generic40 claims93%
- Brand-name and other3 claims7%
Stephen Lyon'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 Stephen Lyon's Part D claims, 2024
- Opioids56%24 of 43 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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 Stephen A. Lyon takes part in Medicare
Stephen Lyon 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)
For MedTech and pharma teams
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Sources for Stephen A. Lyon'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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) |
| 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 Stephen A. Lyon
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Stephen A. Lyon's NPI number?
Stephen A. Lyon's NPI number is 1477007573. It was assigned on August 8, 2016, and it is active in the NPI Registry.
What does Stephen A. Lyon specialize in?
Stephen A. Lyon is a physician assistant in San Diego, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Stephen A. Lyon practice?
Stephen Lyon practices at 4647 Zion Ave, San Diego, CA 92120. Stephen Lyon's primary practice is Kaiser Permanente Zion Medical Center in San Diego, California, part of Kaiser Permanente.
What is Stephen A. Lyon's office phone number?
The practice phone on file for Stephen Lyon is (619) 528-5000.
Which hospitals is Stephen A. Lyon affiliated with?
Stephen Lyon practices at Kaiser Permanente Zion Medical Center in San Diego, California.
What medical group is Stephen A. Lyon part of?
Stephen Lyon is linked to Southern California Permanente Medical Group.
Does Stephen A. Lyon accept Medicare?
Yes. CMS lists Stephen Lyon as accepting Medicare assignment.
What drugs does Stephen A. Lyon prescribe most?
In 2024 Medicare Part D data, Stephen Lyon's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
How long has Stephen A. Lyon been practicing?
Stephen Lyon graduated from medical school in 2016, 10 years ago.
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