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Dr. Alexandra Herrero Leon Guerrero, MD
NPI1780020586PAC ID0547693566
- Medicare services, 2024
- 252
- Medicare patients, 2024
- 169
- Part D claims, 2024
- 48
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 459 Patterson Rd, Honolulu, HI 96819
- Practice phone
- Call (671) 647-4542
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hafa Adai Specialist Group LLP
Honolulu, Hawaii
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. Alexandra Herrero Leon Guerrero is a general surgeon in Honolulu, Hawaii
Dr. Leon Guerrero practices at Hafa Adai Specialist Group LLP in Honolulu, Hawaii.
Dr. Leon Guerrero's NPI, 1780020586, was assigned on May 20, 2013. Dr. Leon Guerrero graduated from New York University School of Medicine in 2013. Dr. Leon Guerrero holds Guam license M-2170.
NPI and contact details
- NPI
- 1780020586NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547693566
- NPI enumeration date
- May 20, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (671) 647-4542
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexandra Herrero Leon Guerrero practices at Hafa Adai Specialist Group LLP in Honolulu, Hawaii
Dr. Leon Guerrero's primary practice is Hafa Adai Specialist Group LLP, at 459 Patterson Rd, Honolulu, HI 96819 in Honolulu County. The practice phone is (671) 647-4542.
- Hafa Adai Specialist Group LLP459 Patterson Rd, Honolulu, HI 96819 · Honolulu CountyPhone(671) 647-4542
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Alexandra Herrero Leon Guerrero is affiliated with 4 sites of care and 3 medical groups
Dr. Leon Guerrero's primary practice is Hafa Adai Specialist Group LLP in Honolulu, Hawaii. Dr. Leon Guerrero is also affiliated with Guam Regional Medical City. The medical group on file is Hafa Adai Specialists Group. Dmand AI also links Dr. Leon Guerrero to 1 more hospital, 2 medical groups and 1 group practice or clinic, each named with a free account.
Hafa Adai Specialist Group LLPPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Alexandra Herrero Leon Guerrero's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leon Guerrero practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hafa Adai Specialist Group LLP | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexandra Herrero Leon Guerrero is one of 142 general surgeons in Hawaii
Surgery is Dr. Leon Guerrero's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Leon Guerrero is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Leon Guerrero's licenses on file in 2 states: Guam and California.
Specialties and state licenses
- Surgery, GuamPrimary
- California license
Clinical focus
Dmand AI lists colonoscopy, colon removal, gallbladder removal, gastrointestinal bleeding, groin hernia surgery, hemorrhoids, mastectomy and removal of damaged skin or skin graft among the conditions Dr. Leon Guerrero treats.
General surgeons near Dr. Leon Guerrero
Counts of general surgeons 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. Alexandra Herrero Leon Guerrero billed Medicare for 252 services in 2024
CMS data shows 252 Medicare services from Dr. Leon Guerrero across 5 procedure codes in 2024, for 169 Medicare patients. Medicare paid $24,713 for them.
Medicare services, 2024252
Medicare patients169
Paid by Medicare$24,713
Procedure codes5
Dr. Leon Guerrero's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 832024: 166100%
- Surgery
- 2023: 342024: 68100%
- Other services
- 2023: 182024: 18No change
Where Dr. Leon Guerrero's Medicare services took place, 2024
- In an office16666%
- In a facility8634%
Dr. Leon Guerrero compared with the Hawaii median for general surgeons, 2024
- Dr. Leon Guerrero
- Hawaii median
- Medicare services
- 252vs 1112.3 times
- Medicare patients
- 169vs 822.1 times
- Part D claims
- 12vs 2450% below
Medians across 131 general surgeons in Hawaii 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leon Guerrero and other general surgeons in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexandra Herrero Leon Guerrero treated 169 Medicare patients in 2024, average age 72
CMS counts 169 Medicare patients who saw Dr. Leon Guerrero in 2024. The largest group is 65 to 74, with 93 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.41, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Leon Guerrero's median patient age at 56, with 78% women.
Medicare patients, 2024169
Average age72
Average risk score1.41
Also on Medicaid7%
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
- Women11367%
- Men5633%
Chronic conditions among Dr. Leon Guerrero's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes55%
- Arthritis34%
- Chronic kidney disease30%
- Ischemic heart disease27%
- Cancer24%
- Osteoporosis22%
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 56
Patient panel by sex, all payers
- Women78%
- Men21%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexandra Herrero Leon Guerrero wrote 48 Medicare Part D claims in 2024
In 2024, Dr. Leon Guerrero wrote 48 Medicare Part D claims for 24 patients. 85% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $211 in total drug cost. In 2023, CMS named 14 claims across 1 drug.
Part D claims, 202448
Drugs named by CMS1
Total drug cost$211
Part D patients24
Dr. Leon Guerrero's Part D claims by kind of drug, 2024
- Generic41 claims85%
- Brand-name and other7 claims15%
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 142024: 1214%
Drugs named by CMS: 1 in 2024, 1 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. Alexandra Herrero Leon Guerrero ranks in the 64th percentile for colonoscopy in Medicare
Dr. Leon Guerrero accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 52 procedures of colonoscopy by Dr. Leon Guerrero, more than 64% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Leon Guerrero ranks in Medicare procedure volume
- Colonoscopy
- 64th percentile52 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 51st percentile21 procedures
- Mastectomy
- 64th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Alexandra Herrero Leon Guerrero has 1 publication on record
Dmand AI links 1 paper to Dr. Leon Guerrero.
Papers1
Recent publications by Dr. Leon Guerrero
See who Dr. Leon Guerrero researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leon Guerrero works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Alexandra Herrero Leon Guerrero received $2,581 in industry payments from 2017 to 2024
CMS Open Payments shows 10 general payments to Dr. Leon Guerrero from 4 drug and device companies from 2017 to 2024. Education make up the largest share, 77% of the total. Intuitive Surgical, Inc. paid the most, $2,282.
General payments to Dr. Leon Guerrero by program year, 2017 to 2024
General payments to Dr. Leon Guerrero by kind, 2017 to 2024
$2.6Kin total
- Education$2,00077%
- Food and beverage$58123%
Companies that paid Dr. Leon Guerrero the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexandra Herrero Leon Guerrero graduated from New York University School of Medicine
Dr. Leon Guerrero graduated from New York University School of Medicine in 2013. Dr. Leon Guerrero is a member of ACS and SAGES.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Alexandra Herrero Leon Guerrero accepts plans from 1 insurance carrier
Dr. Leon Guerrero is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Alexandra Herrero 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 | 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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Alexandra Herrero 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. Alexandra Herrero Leon Guerrero's NPI number?
Dr. Alexandra Herrero Leon Guerrero's NPI number is 1780020586. It was assigned on May 20, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexandra Herrero Leon Guerrero?
Dr. Alexandra Herrero Leon Guerrero is a general surgeon in Honolulu, Hawaii. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Alexandra Herrero Leon Guerrero practice?
Dr. Leon Guerrero practices at 459 Patterson Rd, Honolulu, HI 96819. Dr. Leon Guerrero's primary practice is Hafa Adai Specialist Group LLP in Honolulu, Hawaii. Dmand AI also links Dr. Leon Guerrero to 1 hospital, 2 medical groups and 1 group practice or clinic.
What is Dr. Alexandra Herrero Leon Guerrero's office phone number?
The practice phone on file for Dr. Leon Guerrero is (671) 647-4542.
What is Dr. Alexandra Herrero Leon Guerrero's medical license number?
Dr. Leon Guerrero holds Guam license M-2170, one of the licenses on file in 2 states.
Which states has Dr. Alexandra Herrero Leon Guerrero been licensed in?
Dmand AI has state licenses on file for Dr. Leon Guerrero in Guam (since 2025) and California (2018 to 2020).
Which hospitals is Dr. Alexandra Herrero Leon Guerrero affiliated with?
Dr. Leon Guerrero is affiliated with Guam Regional Medical City. Dmand AI links Dr. Leon Guerrero to 1 more hospital.
What medical group is Dr. Alexandra Herrero Leon Guerrero part of?
Dr. Leon Guerrero is linked to Hafa Adai Specialists Group. Dmand AI links Dr. Leon Guerrero to 2 more medical groups.
Does Dr. Alexandra Herrero Leon Guerrero accept Medicare?
Yes. CMS data shows Dr. Leon Guerrero billed Medicare for 252 services in 2024, and Dr. Leon Guerrero accepts Medicare assignment.
How many Medicare patients does Dr. Alexandra Herrero Leon Guerrero see?
CMS counts 169 Medicare patients who saw Dr. Leon Guerrero in 2024, with an average age of 72.
Show 8 more questionsShow fewer questions
Is Dr. Alexandra Herrero Leon Guerrero board certified?
Yes. Dr. Leon Guerrero is board certified in surgery by the American Board of Surgery.
What services does Dr. Alexandra Herrero Leon Guerrero bill to Medicare?
In 2024, Dr. Leon Guerrero's most billed Medicare services were office visit, established patient (99213), office visit, new patient (99204) and surgery: digestive system (45385).
Where did Dr. Alexandra Herrero Leon Guerrero go to medical school?
Dr. Leon Guerrero graduated from New York University School of Medicine in 2013.
What drugs does Dr. Alexandra Herrero Leon Guerrero prescribe most?
In 2024 Medicare Part D data, Dr. Leon Guerrero's most prescribed drugs by claims were Famotidine.
Has Dr. Alexandra Herrero Leon Guerrero received payments from drug or device companies?
CMS Open Payments shows $2,581 in general payments to Dr. Leon Guerrero from 4 companies from 2017 to 2024. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Alexandra Herrero Leon Guerrero been practicing?
Dr. Leon Guerrero graduated from medical school in 2013, 13 years ago.
Does Dr. Alexandra Herrero Leon Guerrero do research?
Dmand AI links 1 publication to Dr. Leon Guerrero.
What insurance does Dr. Alexandra Herrero Leon Guerrero accept?
Dr. Leon Guerrero is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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