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Dr. Michael John Maranzano, MD
NPI1114453016
- Part D claims, 2024
- 52
- Publications
- 2
- Industry payments
- $1,631
- State licenses
- 2
- Year NPI issued
- 2017
- Practice address
- 2051 Marengo St, Los Angeles, CA 90033
- Practice phone
- Call (323) 409-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Los Angeles General Medical Center
Los Angeles, California
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Dr. Michael John Maranzano is a hematologist and oncologist in Los Angeles, California
Dr. Maranzano practices at Los Angeles General Medical Center in Los Angeles, California.
Dr. Maranzano's NPI, 1114453016, was assigned on May 11, 2017. Dr. Maranzano graduated from Duke University School Of Medicine in 2017. Dr. Maranzano holds California license 170563.
NPI and contact details
- NPI
- 1114453016NPI Registry (opens in a new tab)
- NPI enumeration date
- May 11, 2017
- NPI status
- Active
- Practice phone
- (323) 409-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Michael John Maranzano practices at Los Angeles General Medical Center in Los Angeles, California
Dr. Maranzano's primary practice is Los Angeles General Medical Center, at 2051 Marengo St, Los Angeles, CA 90033 in Los Angeles County. The practice phone is (323) 409-2800.
- Los Angeles General Medical Center2051 Marengo St, Los Angeles, CA 90033 · Los Angeles CountyPhone(323) 409-2800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael John Maranzano is affiliated with 1 site of care
Dr. Maranzano's primary practice is Los Angeles General Medical Center in Los Angeles, California.
Los Angeles General Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Michael John Maranzano's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maranzano practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Los Angeles General Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael John Maranzano is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Maranzano's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Maranzano is board certified in geriatric medicine by the American Board of Internal Medicine. Dmand AI has Dr. Maranzano's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
- Illinois license
Hematologists and oncologists near Dr. Maranzano
Counts of hematologists and oncologists 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. Michael John Maranzano's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Maranzano's median patient age at 59, with 55% women.
Dr. Maranzano's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. Michael John Maranzano wrote 52 Medicare Part D claims in 2024
In 2024, Dr. Maranzano wrote 52 Medicare Part D claims for 20 patients. 77% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $143 in total drug cost. In 2020, CMS named 495 claims across 22 drugs.
Part D claims, 202452
Drugs named by CMS1
Total drug cost$143
Part D patients20
Dr. Maranzano's Part D claims by kind of drug, 2024
- Generic40 claims77%
- Brand-name12 claims23%
Dr. Maranzano's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 4952021: 1497%
Drugs named by CMS: 1 in 2021, 22 in 2020.
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. Michael John Maranzano has 2 publications on record
Dmand AI links 2 papers to Dr. Maranzano, published from 2013 to 2021. Dr. Maranzano's most frequent co-authors are Andrew S. Artz, MD, MS, Michael S. Freemark and Priya S. Kishnani.
Papers2
Years published2013 to 2021
Dr. Maranzano's most frequent co-authors
- Andrew S. Artz, MD, MS1 shared paper
- Michael S. Freemark1 shared paper
- Priya S. Kishnani1 shared paper
Recent publications by Dr. Maranzano
Bone and BonesDogsGenetic Therapy
See who Dr. Maranzano researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Maranzano works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Michael John Maranzano received $1,631 in industry payments from 2024 to 2025
CMS Open Payments shows 40 general payments to Dr. Maranzano from 12 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 94% of the total. Janssen Pharmaceuticals, Inc paid the most, $399.
General payments to Dr. Maranzano by program year, 2024 to 2025
General payments to Dr. Maranzano by kind, 2024 to 2025
$1.6Kin total
- Food and beverage$1,54194%
- Education$906%
Companies that paid Dr. Maranzano the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael John Maranzano graduated from Duke University School Of Medicine
Dr. Maranzano graduated from Duke University School Of Medicine in 2017. Dr. Maranzano is a member of ACP, AGS and ASCO.
- Medical school
- Board certified in geriatric medicine
- Board certified in hematology
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael John Maranzano'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 Data |
| 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)Medicare Part D Prescribers - by Provider (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 |
| 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. Michael John Maranzano
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. Michael John Maranzano's NPI number?
Dr. Michael John Maranzano's NPI number is 1114453016. It was assigned on May 11, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael John Maranzano?
Dr. Michael John Maranzano is a hematologist and oncologist in Los Angeles, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Michael John Maranzano practice?
Dr. Maranzano practices at 2051 Marengo St, Los Angeles, CA 90033. Dr. Maranzano's primary practice is Los Angeles General Medical Center in Los Angeles, California.
What is Dr. Michael John Maranzano's office phone number?
The practice phone on file for Dr. Maranzano is (323) 409-2800.
What is Dr. Michael John Maranzano's medical license number?
Dr. Maranzano holds California license 170563, one of the licenses on file in 2 states.
Which states has Dr. Michael John Maranzano been licensed in?
Dmand AI has state licenses on file for Dr. Maranzano in California (2020 to 2026) and Illinois (2017 to 2020).
Is Dr. Michael John Maranzano board certified?
Yes. Dr. Maranzano is board certified in geriatric medicine by the American Board of Internal Medicine.
Where did Dr. Michael John Maranzano go to medical school?
Dr. Maranzano graduated from Duke University School Of Medicine in 2017.
What drugs does Dr. Michael John Maranzano prescribe most?
In 2021 Medicare Part D data, Dr. Maranzano's most prescribed drugs by claims were Levothyroxine Sodium.
Has Dr. Michael John Maranzano received payments from drug or device companies?
CMS Open Payments shows $1,631 in general payments to Dr. Maranzano from 12 companies from 2024 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
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How long has Dr. Michael John Maranzano been practicing?
Dr. Maranzano graduated from medical school in 2017, 9 years ago.
Does Dr. Michael John Maranzano do research?
Dmand AI links 2 publications to Dr. Maranzano, published from 2013 to 2021.
Who does Dr. Michael John Maranzano publish with?
Dr. Maranzano's most frequent co-authors are Andrew S. Artz, MD, MS (1 shared paper), Michael S. Freemark (1 shared paper) and Priya S. Kishnani (1 shared paper).
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