Dr. Randolph Flores Leon Guerrero, MD
- Medicare services, 2024
- 23
- Medicare patients, 2024
- 33
- Part D claims, 2024
- 3,053
- Industry payments
- $207
- Affiliated sites
- 2
- Practice address
- 43839 15th W St, Lancaster, CA 93534
- Practice phone
- Call (661) 945-5984
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
High Desert Medical Group
Urgent Care Center · Lancaster, California
Find Dr. Leon Guerrero'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. Randolph Flores Leon Guerrero is an internist in Lancaster, California
Dr. Leon Guerrero practices at High Desert Medical Group in Lancaster, California.
Dr. Leon Guerrero's NPI, 1184689671, was assigned on April 19, 2006. Dr. Leon Guerrero graduated from Keck School of Medicine of USC in 2002. Dr. Leon Guerrero holds California license A91626.
- NPI
- 1184689671NPI Registry (opens in a new tab)
- NPI enumeration date
- April 19, 2006
- NPI status
- Active
- Practice phone
- (661) 945-5984
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Randolph Flores Leon Guerrero practices at High Desert Medical Group in Lancaster, California
Dr. Leon Guerrero's primary practice is High Desert Medical Group, at 43839 15th W St, Lancaster, CA 93534. The practice phone is (661) 945-5984.
- High Desert Medical Group43839 15th W St, Lancaster, CA 93534Phone(661) 945-5984
Source: Dmand AI Affiliation Data
Dr. Randolph Flores Leon Guerrero is affiliated with 2 sites of care and 1 medical group
Dr. Leon Guerrero's primary practice is High Desert Medical Group in Lancaster, California. The medical group on file is Heritage Victor Valley Medical Group. Dmand AI also links Dr. Leon Guerrero to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Randolph Flores Leon Guerrero's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leon Guerrero practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| High Desert Medical Group | 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. Randolph Flores Leon Guerrero is one of 16,751 internists in California
Internal medicine is Dr. Leon Guerrero's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Leon Guerrero is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Leon Guerrero's licenses on file in 2 states: California and Guam.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Guam license
Clinical focus
Dmand AI lists acute sinusitis, adjustment disease, alcohol use disorders, anxiety, chronic diabetes, chronic hypertension, coronary artery disease and fibromyalgia and chronic pain among the conditions Dr. Leon Guerrero treats.
Internists near Dr. Leon Guerrero
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. Randolph Flores Leon Guerrero billed Medicare for 23 services in 2024
CMS data shows 23 Medicare services from Dr. Leon Guerrero across 1 procedure code in 2024, all of them office visits, for 33 Medicare patients. Medicare paid $1,561 for them. Every service was in an office.
Dr. Leon Guerrero's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1032024: 2378%
Dr. Leon Guerrero compared with the California median for internists, 2024
- Dr. Leon Guerrero
- California median
- Medicare services
- 23vs 36194% below
- Medicare patients
- 33vs 15178% below
- Part D claims
- 2,550vs 4216.1 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Leon Guerrero's most billed Medicare procedure codes, 2024
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. Leon Guerrero?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leon Guerrero and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Randolph Flores Leon Guerrero treated 33 Medicare patients in 2024, average age 73
CMS counts 33 Medicare patients who saw Dr. Leon Guerrero in 2024. The largest group is 65 to 74, with 22 patients. 58% of them have high cholesterol, and 52% have high blood pressure. Their average risk score is 0.81, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Leon Guerrero's median patient age at 70, with 49% women.
Dr. Leon Guerrero's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Leon Guerrero's Medicare patients by sex, 2024
- Women1648%
- Men1752%
Chronic conditions among Dr. Leon Guerrero's Medicare patients, 2024
- High cholesterol58%
- High blood pressure52%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leon Guerrero's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Randolph Flores Leon Guerrero wrote 3,053 Medicare Part D claims in 2024
In 2024, Dr. Leon Guerrero wrote 3,053 Medicare Part D claims for 345 patients. 88% of them were for generic drugs. CMS names the drug for 2,550 of them, across 65 drugs with 11 or more claims each, at $163,244 in total drug cost. In 2023, CMS named 4,284 claims across 93 drugs.
Dr. Leon Guerrero's Part D claims by kind of drug, 2024
- Generic2,672 claims88%
- Brand-name350 claims11%
- Other31 claims1%
Dr. Leon Guerrero'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. Leon Guerrero's Part D claims, 2024
- Opioids1%32 of 3,053 claims
- Antibiotics1%39 of 3,053 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: 4,2842024: 2,55040%
Drugs named by CMS: 65 in 2024, 93 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
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Dr. Randolph Flores Leon Guerrero received $207 in industry payments from 2021 to 2024
CMS Open Payments shows 12 general payments to Dr. Leon Guerrero from 4 drug and device companies from 2021 to 2024. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $91.
General payments to Dr. Leon Guerrero by program year, 2021 to 2024
Companies that paid Dr. Leon Guerrero the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Randolph Flores Leon Guerrero graduated from Keck School of Medicine of USC
Dr. Leon Guerrero graduated from Keck School of Medicine of USC in 2002.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Randolph Flores Leon Guerrero accepts plans from 6 insurance carriers
Dr. Leon Guerrero is in network with 6 carriers, including Aetna, Molina and Blue Cross and Blue Shield of Kansas City. EPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Aetna
- Molina
- Blue Cross and Blue Shield of Kansas City
- HCSC
- Humana
- United Healthcare
Plan types Dr. Leon Guerrero accepts, by number of carriers
- EPO3
- HMO3
- Medicare2
- PPO2
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Randolph Flores Leon Guerrero'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 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 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) |
| 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. Randolph Flores Leon Guerrero
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. Randolph Flores Leon Guerrero's NPI number?
Dr. Randolph Flores Leon Guerrero's NPI number is 1184689671. It was assigned on April 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Randolph Flores Leon Guerrero?
Dr. Randolph Flores Leon Guerrero is an internist in Lancaster, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Randolph Flores Leon Guerrero practice?
Dr. Leon Guerrero practices at 43839 15th W St, Lancaster, CA 93534. Dr. Leon Guerrero's primary practice is High Desert Medical Group in Lancaster, California. Dmand AI also links Dr. Leon Guerrero to 1 group practice or clinic.
What is Dr. Randolph Flores Leon Guerrero's office phone number?
The practice phone on file for Dr. Leon Guerrero is (661) 945-5984.
What is Dr. Randolph Flores Leon Guerrero's medical license number?
Dr. Leon Guerrero holds California license A91626, one of the licenses on file in 2 states.
Which states has Dr. Randolph Flores Leon Guerrero been licensed in?
Dmand AI has state licenses on file for Dr. Leon Guerrero in California (2020 to 2026) and Guam (2010 to 2021).
What medical group is Dr. Randolph Flores Leon Guerrero part of?
Dr. Leon Guerrero is linked to Heritage Victor Valley Medical Group.
Does Dr. Randolph Flores Leon Guerrero accept Medicare?
Yes. CMS data shows Dr. Leon Guerrero billed Medicare for 23 services in 2024.
How many Medicare patients does Dr. Randolph Flores Leon Guerrero see?
CMS counts 33 Medicare patients who saw Dr. Leon Guerrero in 2024, with an average age of 73.
Is Dr. Randolph Flores Leon Guerrero board certified?
Yes. Dr. Leon Guerrero is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Randolph Flores Leon Guerrero bill to Medicare?
In 2024, Dr. Leon Guerrero's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Randolph Flores Leon Guerrero go to medical school?
Dr. Leon Guerrero graduated from Keck School of Medicine of USC in 2002.
What drugs does Dr. Randolph Flores Leon Guerrero prescribe most?
In 2024 Medicare Part D data, Dr. Leon Guerrero's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
Has Dr. Randolph Flores Leon Guerrero received payments from drug or device companies?
CMS Open Payments shows $207 in general payments to Dr. Leon Guerrero from 4 companies from 2021 to 2024. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Randolph Flores Leon Guerrero been practicing?
Dr. Leon Guerrero graduated from medical school in 2002, 24 years ago.
What insurance does Dr. Randolph Flores Leon Guerrero accept?
Dr. Leon Guerrero is in network with 6 carriers, including Aetna, Molina and Blue Cross and Blue Shield of Kansas City. EPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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