Dr. Alfredo Leon, MD
- Medicare services, 2019
- 254
- Part D claims, 2019
- 1,399
- Industry payments
- $5,415
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 420 W Acacia St, Stockton, CA 95203-2441
- Practice phone
- Call (209) 948-0531
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Alfredo Leon MD Inc.
Physician office · Stockton, California
Find Dr. Leon'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. Alfredo Leon is an internist in Stockton, California
Dr. Leon practices at Alfredo Leon MD Inc. in Stockton, California.
Dr. Leon's NPI, 1497791214, was assigned on June 21, 2006. Dr. Leon graduated from UC Irvine School of Medicine in 1962. Dr. Leon's California license number on file is A20685.
- NPI
- 1497791214NPI Registry (opens in a new tab)
- NPI enumeration date
- June 21, 2006
- NPI status
- Active
- Practice phone
- (209) 948-0531
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1962
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Alfredo Leon practices at 2 locations in Stockton, California
Dr. Leon's primary practice is Alfredo Leon MD Inc., at 420 W Acacia St, Stockton, CA 95203-2441. The practice phone is (209) 948-0531. The NPI Registry lists Dr. Leon's practice address as 3132 West March Lane, Suite 5, Stockton, CA 95219-2354.
- Alfredo Leon MD Inc.Primary420 W Acacia St, Stockton, CA 95203-2441Phone(209) 948-0531
- NPI Registry address3132 West March Lane, Suite 5, Stockton, CA 95219-2354Phone(209) 475-5500
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Alfredo Leon is affiliated with 1 site of care
Dr. Leon's primary practice is Alfredo Leon MD Inc. in Stockton, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Alfredo Leon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leon practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Alfredo Leon MD Inc. | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alfredo Leon is one of 16,751 internists in California
Internal medicine is Dr. Leon's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Leon has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Leon
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. Alfredo Leon billed Medicare for 254 services in 2019
CMS data shows 254 Medicare services from Dr. Leon across 3 procedure codes in 2019. Medicare paid $9,469 for them. Every service was in an office.
Dr. Leon's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 7752019: 24069%
- Tests and treatments
- 2018: 1212019: 1488%
- Other services
- 2018: 1032019: 0100%
Dr. Leon compared with the California median for internists, 2019
- Dr. Leon
- California median
- Medicare services
- 254vs 36130% below
- Part D claims
- 1,399vs 4213.3 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Leon's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leon and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alfredo Leon's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Dr. Leon's median patient age at 62, with 68% women.
Dr. Leon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women68%
- Men32%
Source: Dmand AI Patient Panel Data
Dr. Alfredo Leon wrote 1,399 Medicare Part D claims in 2019
In 2019, Dr. Leon wrote 1,399 Medicare Part D claims. They cover 39 drugs, with $47,091 in total drug cost. In 2018, CMS named 3,934 claims across 88 drugs.
Dr. Leon's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 3,9342019: 1,39964%
Drugs named by CMS: 39 in 2019, 88 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Alfredo Leon received $5,415 in industry payments from 2016 to 2019
CMS Open Payments shows 79 general payments to Dr. Leon from 22 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $709.
General payments to Dr. Leon by program year, 2016 to 2019
General payments to Dr. Leon by kind, 2016 to 2019
- Food and beverage$5,408100%
- Education$70%
Companies that paid Dr. Leon the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alfredo Leon graduated from UC Irvine School of Medicine
Dr. Leon graduated from UC Irvine School of Medicine in 1962.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alfredo Leon'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 Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Alfredo Leon
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. Alfredo Leon's NPI number?
Dr. Alfredo Leon's NPI number is 1497791214. It was assigned on June 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Alfredo Leon?
Dr. Alfredo Leon is an internist in Stockton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Alfredo Leon practice?
Dr. Leon practices at 420 W Acacia St, Stockton, CA 95203-2441. Dr. Leon also practices at 3132 West March Lane, Suite 5, Stockton, CA 95219-2354. Dr. Leon's primary practice is Alfredo Leon MD Inc. in Stockton, California.
What is Dr. Alfredo Leon's office phone number?
The practice phone on file for Dr. Leon is (209) 948-0531.
What is Dr. Alfredo Leon's medical license number?
Dr. Leon's California license number on file is A20685.
Does Dr. Alfredo Leon accept Medicare?
Yes. CMS data shows Dr. Leon billed Medicare for 254 services in 2019.
What services does Dr. Alfredo Leon bill to Medicare?
In 2019, Dr. Leon's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and heart test or procedure (93000).
Where did Dr. Alfredo Leon go to medical school?
Dr. Leon graduated from UC Irvine School of Medicine in 1962.
What drugs does Dr. Alfredo Leon prescribe most?
In 2019 Medicare Part D data, Dr. Leon's most prescribed drugs by claims were Atorvastatin Calcium, Metformin HCl and Gabapentin.
Has Dr. Alfredo Leon received payments from drug or device companies?
CMS Open Payments shows $5,415 in general payments to Dr. Leon from 22 companies from 2016 to 2019. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Alfredo Leon been practicing?
Dr. Leon graduated from medical school in 1962, 64 years ago.
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