Dr. Mariana Marrero Castillo, MD
- Medicare services, 2024
- 225
- Medicare patients, 2024
- 206
- Part D claims, 2024
- 1,647
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 1541 Kings Highway, Shreveport, LA 71130
- Practice phone
- Call (318) 675-5058
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Marrero Castillo'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. Mariana Marrero Castillo is an internist in Shreveport, Louisiana
Dr. Marrero Castillo practices at Ochsner LSU Health - Academic Medical Center in Shreveport, Louisiana, part of Ochsner Health System.
Dr. Marrero Castillo's NPI, 1366894859, was assigned on July 7, 2016. Dr. Marrero Castillo holds Louisiana license 328295.
- NPI
- 1366894859NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810274750
- NPI enumeration date
- July 7, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (318) 675-5058
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mariana Marrero Castillo practices at Ochsner LSU Health - Academic Medical Center in Shreveport, Louisiana
Dr. Marrero Castillo's primary practice is Ochsner LSU Health - Academic Medical Center, at 1541 Kings Highway, Shreveport, LA 71130 in Caddo Parish. The practice phone is (318) 675-5058.
- Ochsner LSU Health - Academic Medical Center1541 Kings Highway, Shreveport, LA 71130 · Caddo ParishPhone(318) 675-5058
Source: Dmand AI Affiliation Data
Dr. Mariana Marrero Castillo is affiliated with 3 sites of care and 1 medical group
Dr. Marrero Castillo's primary practice is Ochsner LSU Health - Academic Medical Center in Shreveport, Louisiana, part of Ochsner Health System. Dr. Marrero Castillo is also affiliated with Ochsner LSU Health - St. Mary Medical Center. The medical group on file is LSU Health Shreveport. Dmand AI also links Dr. Marrero Castillo to 1 more home health agency, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mariana Marrero Castillo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marrero Castillo practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ochsner LSU Health - Academic Medical Center | Available with a free account |
| +2 more affiliated sites | 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 Ochsner Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mariana Marrero Castillo is one of 1,571 internists in Louisiana
Internal medicine is Dr. Marrero Castillo's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Marrero Castillo is licensed in Louisiana.
Specialties and state licenses
- Internal medicine, LouisianaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gallbladder or bile duct inflammation, acute skin infection, aneurysm, atrial fibrillation and flutter, chronic anemia, chronic diabetes and chronic hypertension among the conditions Dr. Marrero Castillo treats.
Internists near Dr. Marrero Castillo
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. Mariana Marrero Castillo billed Medicare for 225 services in 2024
CMS data shows 225 Medicare services from Dr. Marrero Castillo across 3 procedure codes in 2024, all of them office visits, for 206 Medicare patients. Medicare paid $13,684 for them.
Dr. Marrero Castillo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2572024: 22512%
Where Dr. Marrero Castillo's Medicare services took place, 2024
- In an office167%
- In a facility20993%
Dr. Marrero Castillo compared with the Louisiana median for internists, 2024
- Dr. Marrero Castillo
- Louisiana median
- Medicare services
- 225vs 42147% below
- Medicare patients
- 206vs 16029% above
- Part D claims
- 1,213vs 4083.0 times
Medians across 1,561 internists in Louisiana with Dmand AI profiles that report each measure.
Dr. Marrero Castillo'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. Marrero Castillo?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marrero Castillo and other internists in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mariana Marrero Castillo treated 206 Medicare patients in 2024, average age 66
CMS counts 206 Medicare patients who saw Dr. Marrero Castillo in 2024. The largest group is 65 to 74, with 89 patients. 75% of them have high blood pressure, and 62% have high cholesterol. 58% are also on Medicaid. Their average risk score is 1.47, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marrero Castillo's median patient age at 63, with 60% women.
Dr. Marrero Castillo's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marrero Castillo's Medicare patients by sex, 2024
- Women12561%
- Men8139%
Chronic conditions among Dr. Marrero Castillo's Medicare patients, 2024
- High blood pressure75%
- High cholesterol62%
- Diabetes41%
- Arthritis39%
- Mood disorders25%
- Tobacco use25%
- Chronic kidney disease24%
- Depression23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marrero Castillo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mariana Marrero Castillo wrote 1,647 Medicare Part D claims in 2024
In 2024, Dr. Marrero Castillo wrote 1,647 Medicare Part D claims for 266 patients. 80% of them were for generic drugs. CMS names the drug for 1,213 of them, across 40 drugs with 11 or more claims each, at $89,670 in total drug cost. In 2023, CMS named 1,450 claims across 44 drugs.
Dr. Marrero Castillo's Part D claims by kind of drug, 2024
- Generic1,316 claims80%
- Brand-name293 claims18%
- Other38 claims2%
Dr. Marrero Castillo'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: 1,4502024: 1,21316%
Drugs named by CMS: 40 in 2024, 44 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. Mariana Marrero Castillo takes part in Medicare
Dr. Marrero Castillo 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)
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Dr. Mariana Marrero Castillo has 1 publication on record
Dmand AI links 1 paper to Dr. Marrero Castillo in 2023. Dr. Marrero Castillo's most frequent co-authors are Benedict Amalraj, John Jacob, MD and David A. Kaufman, MD.
Dr. Marrero Castillo's most frequent co-authors
Recent publications by Dr. Marrero Castillo
See who Dr. Marrero Castillo researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Marrero Castillo works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mariana Marrero Castillo received $613 in industry payments from 2019 to 2025
CMS Open Payments shows 19 general payments to Dr. Marrero Castillo from 12 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $187.
General payments to Dr. Marrero Castillo by program year, 2019 to 2025
Companies that paid Dr. Marrero Castillo the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mariana Marrero Castillo accepts plans from 10 insurance carriers
Dr. Marrero Castillo is in network with 10 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Arkansas Blue Cross and Blue Shield
- +2 more carriersWith a free account
Plan types Dr. Marrero Castillo accepts, by number of carriers
- Medicare8
- PPO8
- HMO5
- POS5
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mariana Marrero Castillo'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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) |
| 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. Mariana Marrero Castillo
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. Mariana Marrero Castillo's NPI number?
Dr. Mariana Marrero Castillo's NPI number is 1366894859. It was assigned on July 7, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Mariana Marrero Castillo?
Dr. Mariana Marrero Castillo is an internist in Shreveport, Louisiana. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mariana Marrero Castillo practice?
Dr. Marrero Castillo practices at 1541 Kings Highway, Shreveport, LA 71130. Dr. Marrero Castillo's primary practice is Ochsner LSU Health - Academic Medical Center in Shreveport, Louisiana, part of Ochsner Health System. Dmand AI also links Dr. Marrero Castillo to 1 home health agency.
What is Dr. Mariana Marrero Castillo's office phone number?
The practice phone on file for Dr. Marrero Castillo is (318) 675-5058.
What is Dr. Mariana Marrero Castillo's medical license number?
Dr. Marrero Castillo holds Louisiana license 328295.
Which hospitals is Dr. Mariana Marrero Castillo affiliated with?
Dr. Marrero Castillo practices at Ochsner LSU Health - Academic Medical Center in Shreveport, Louisiana. Dr. Marrero Castillo is also affiliated with Ochsner LSU Health - St. Mary Medical Center.
What medical group is Dr. Mariana Marrero Castillo part of?
Dr. Marrero Castillo is linked to LSU Health Shreveport.
Does Dr. Mariana Marrero Castillo accept Medicare?
Yes. CMS data shows Dr. Marrero Castillo billed Medicare for 225 services in 2024, and Dr. Marrero Castillo accepts Medicare assignment.
How many Medicare patients does Dr. Mariana Marrero Castillo see?
CMS counts 206 Medicare patients who saw Dr. Marrero Castillo in 2024, with an average age of 66.
What services does Dr. Mariana Marrero Castillo bill to Medicare?
In 2024, Dr. Marrero Castillo's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99204).
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What drugs does Dr. Mariana Marrero Castillo prescribe most?
In 2024 Medicare Part D data, Dr. Marrero Castillo's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Pantoprazole Sodium.
Has Dr. Mariana Marrero Castillo received payments from drug or device companies?
CMS Open Payments shows $613 in general payments to Dr. Marrero Castillo from 12 companies from 2019 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Mariana Marrero Castillo been practicing?
Dr. Marrero Castillo graduated from medical school in 2010, 16 years ago.
Does Dr. Mariana Marrero Castillo do research?
Dmand AI links 1 publication to Dr. Marrero Castillo.
Who does Dr. Mariana Marrero Castillo publish with?
Dr. Marrero Castillo's most frequent co-authors are Benedict Amalraj (1 shared paper), John Jacob, MD (1 shared paper) and David A. Kaufman, MD (1 shared paper).
What insurance does Dr. Mariana Marrero Castillo accept?
Dr. Marrero Castillo is in network with 10 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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