Dr. Guillermo R. Lopez, MD
- Medicare services, 2024
- 405
- Medicare patients, 2024
- 198
- Part D claims, 2024
- 17,364
- Hospital affiliations
- 2
- Industry payments
- $4,796
- Practice address
- 4200 Houma Blvd, Metairie, LA 70006
- Practice phone
- Call (504) 454-4855
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
East Jefferson General Hospital
Metairie, Louisiana
Find Dr. Lopez'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. Guillermo R. Lopez is an internist in Metairie, Louisiana
Dr. Lopez practices at East Jefferson General Hospital in Metairie, Louisiana.
Dr. Lopez's NPI, 1518187590, was assigned on May 1, 2007. Dr. Lopez graduated from University of Miami, Miller School of Medicine in 1995. Dr. Lopez holds Florida license 72664.
- NPI
- 1518187590NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496827636
- NPI enumeration date
- May 1, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (504) 454-4855
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Guillermo R. Lopez practices at East Jefferson General Hospital in Metairie, Louisiana
Dr. Lopez's primary practice is East Jefferson General Hospital, at 4200 Houma Blvd, Metairie, LA 70006 in Jefferson Parish. The practice phone is (504) 454-4855.
- East Jefferson General Hospital4200 Houma Blvd, Metairie, LA 70006 · Jefferson ParishPhone(504) 454-4855
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Guillermo R. Lopez is affiliated with 8 sites of care and 2 medical groups
Dr. Lopez's primary practice is East Jefferson General Hospital in Metairie, Louisiana. Dr. Lopez is also affiliated with South Miami Hospital. The medical group on file is Tricord Medical. Dmand AI also links Dr. Lopez to 1 more hospital, 2 group practices and clinics, 1 physician office, 1 home health agency, 1 hospice and 1 medical group, each 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. Guillermo R. Lopez's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lopez practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| East Jefferson General Hospital | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Guillermo R. Lopez is one of 1,571 internists in Louisiana
Internal medicine is Dr. Lopez's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Lopez is board certified in internal medicine by the American Board of Internal Medicine. Dr. Lopez is licensed in Florida.
Specialties and state licenses
- Internal medicine, FloridaPrimary
Clinical focus
Dmand AI lists acid reflux, acute mini-stroke (TIA), aneurysm, aortic atherosclerois, arthritis, asthma, atrial fibrillation and flutter and bladder disease among the conditions Dr. Lopez treats.
Internists near Dr. Lopez
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. Guillermo R. Lopez billed Medicare for 405 services in 2024
CMS data shows 405 Medicare services from Dr. Lopez across 3 procedure codes in 2024, for 198 Medicare patients. Medicare paid $40,082 for them. Every service was in an office.
Dr. Lopez's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3562024: 3673%
- Other services
- 2023: 452024: 3816%
Dr. Lopez compared with the Louisiana median for internists, 2024
- Dr. Lopez
- Louisiana median
- Medicare services
- 405vs 421Close to median
- Medicare patients
- 198vs 16024% above
- Part D claims
- 16,514vs 40840.5 times
Medians across 1,561 internists in Louisiana with Dmand AI profiles that report each measure.
Dr. Lopez'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. Lopez?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lopez and other internists in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Guillermo R. Lopez treated 198 Medicare patients in 2024, average age 77
CMS counts 198 Medicare patients who saw Dr. Lopez in 2024. The largest group is 75 to 84, with 74 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lopez's median patient age at 65, with 54% women.
Dr. Lopez's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lopez's Medicare patients by sex, 2024
- Women12262%
- Men7638%
Chronic conditions among Dr. Lopez's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Chronic kidney disease34%
- Diabetes33%
- Ischemic heart disease30%
- Mood disorders29%
- Alcohol and drug use disorders28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lopez's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Guillermo R. Lopez wrote 17,364 Medicare Part D claims in 2024
In 2024, Dr. Lopez wrote 17,364 Medicare Part D claims for 1,174 patients. 87% of them were for generic drugs. CMS names the drug for 16,514 of them, across 190 drugs with 11 or more claims each, at $1,225,733 in total drug cost. In 2023, CMS named 16,955 claims across 194 drugs.
Dr. Lopez's Part D claims by kind of drug, 2024
- Generic15,107 claims87%
- Brand-name2,147 claims12%
- Other110 claims1%
Dr. Lopez'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. Lopez's Part D claims, 2024
- Opioids0%74 of 17,364 claims
- Antibiotics3%580 of 17,364 claims
- Antipsychotics, patients 65 and over1%112 of 17,364 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: 16,9552024: 16,5143%
Drugs named by CMS: 190 in 2024, 194 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. Guillermo R. Lopez takes part in Medicare
Dr. Lopez 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
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Guillermo R. Lopez received $4,796 in industry payments from 2016 to 2025
CMS Open Payments shows 262 general payments to Dr. Lopez from 25 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $1,384.
General payments to Dr. Lopez by program year, 2016 to 2025
Companies that paid Dr. Lopez 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. Guillermo R. Lopez has 1 award and honors on record
Dmand AI lists 1 award for Dr. Lopez, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Lopez
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Guillermo R. Lopez graduated from University of Miami, Miller School of Medicine
Dr. Lopez graduated from University of Miami, Miller School of Medicine in 1995.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Guillermo R. Lopez accepts plans from 17 insurance carriers
Dr. Lopez is in network with 17 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- Cigna
- +9 more carriersWith a free account
Plan types Dr. Lopez accepts, by number of carriers
- Medicare10
- PPO10
- HMO9
- POS5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Guillermo R. Lopez'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) |
| 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. Guillermo R. Lopez
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. Guillermo R. Lopez's NPI number?
Dr. Guillermo R. Lopez's NPI number is 1518187590. It was assigned on May 1, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Guillermo R. Lopez?
Dr. Guillermo R. Lopez is an internist in Metairie, Louisiana. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Guillermo R. Lopez practice?
Dr. Lopez practices at 4200 Houma Blvd, Metairie, LA 70006. Dr. Lopez's primary practice is East Jefferson General Hospital in Metairie, Louisiana. Dmand AI also links Dr. Lopez to 1 hospital, 2 group practices and clinics, 1 physician office, 1 home health agency, 1 hospice and 1 medical group.
What is Dr. Guillermo R. Lopez's office phone number?
The practice phone on file for Dr. Lopez is (504) 454-4855.
What is Dr. Guillermo R. Lopez's medical license number?
Dr. Lopez holds Florida license 72664.
Which hospitals is Dr. Guillermo R. Lopez affiliated with?
Dr. Lopez is affiliated with South Miami Hospital. Dmand AI links Dr. Lopez to 1 more hospital.
What medical group is Dr. Guillermo R. Lopez part of?
Dr. Lopez is linked to Tricord Medical. Dmand AI links Dr. Lopez to 1 more medical group.
Does Dr. Guillermo R. Lopez accept Medicare?
Yes. CMS data shows Dr. Lopez billed Medicare for 405 services in 2024, and Dr. Lopez accepts Medicare assignment.
How many Medicare patients does Dr. Guillermo R. Lopez see?
CMS counts 198 Medicare patients who saw Dr. Lopez in 2024, with an average age of 77.
Is Dr. Guillermo R. Lopez board certified?
Yes. Dr. Lopez is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Guillermo R. Lopez bill to Medicare?
In 2024, Dr. Lopez's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99212).
Where did Dr. Guillermo R. Lopez go to medical school?
Dr. Lopez graduated from University of Miami, Miller School of Medicine in 1995.
What drugs does Dr. Guillermo R. Lopez prescribe most?
In 2024 Medicare Part D data, Dr. Lopez's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Guillermo R. Lopez received payments from drug or device companies?
CMS Open Payments shows $4,796 in general payments to Dr. Lopez from 25 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Guillermo R. Lopez been practicing?
Dr. Lopez graduated from medical school in 1995, 31 years ago.
What insurance does Dr. Guillermo R. Lopez accept?
Dr. Lopez is in network with 17 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in Louisiana by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card