Dr. Maria E. Theodorou, MD
- Medicare services, 2024
- 115
- Medicare patients, 2024
- 55
- Part D claims, 2024
- 442
- Publications
- 4
- MIPS score, 2024
- 95
- Practice address
- 600 Grant St, Gary, IN 46402
- Practice phone
- Call (219) 886-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Theodorou'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. Maria E. Theodorou is a hospitalist in Gary, Indiana
Dr. Theodorou practices at Methodist Hospitals - Northlake in Gary, Indiana, part of The Methodist Hospitals.
Dr. Theodorou's NPI, 1427390244, was assigned on March 19, 2013. Dr. Theodorou graduated from Loyola University of Chicago, Stritch School of Medicine in 2013. Dr. Theodorou holds Illinois license 036139541.
- NPI
- 1427390244NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850692716
- NPI enumeration date
- March 19, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (219) 886-4000
- 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 Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Maria E. Theodorou practices at Methodist Hospitals - Northlake in Gary, Indiana
Dr. Theodorou's primary practice is Methodist Hospitals - Northlake, at 600 Grant St, Gary, IN 46402 in Lake County. The practice phone is (219) 886-4000.
- Methodist Hospitals - Northlake600 Grant St, Gary, IN 46402 · Lake CountyPhone(219) 886-4000
Source: Dmand AI Affiliation Data
Dr. Maria E. Theodorou is affiliated with 3 sites of care and 1 medical group
Dr. Theodorou's primary practice is Methodist Hospitals - Northlake in Gary, Indiana, part of The Methodist Hospitals. Dr. Theodorou is also affiliated with Northwestern Memorial Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Theodorou to 1 more hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Maria E. Theodorou's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Theodorou practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Methodist Hospitals - Northlake | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maria E. Theodorou is one of 462 hospitalists in Indiana
Hospitalist is Dr. Theodorou's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Theodorou is licensed in Illinois.
Specialties and state licenses
- Hospitalist, IllinoisPrimary
Hospitalists near Dr. Theodorou
Counts of hospitalists 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. Maria E. Theodorou billed Medicare for 115 services in 2024
CMS data shows 115 Medicare services from Dr. Theodorou across 3 procedure codes in 2024, for 55 Medicare patients. Medicare paid $9,469 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Theodorou's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2422024: 11552%
Dr. Theodorou compared with the Indiana median for hospitalists, 2024
- Dr. Theodorou
- Indiana median
- Medicare services
- 115vs 56079% below
- Medicare patients
- 55vs 27780% below
- Part D claims
- 136vs 12311% above
Medians across 446 hospitalists in Indiana with Dmand AI profiles that report each measure.
Dr. Theodorou'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Maria E. Theodorou treated 55 Medicare patients in 2024, average age 71
CMS counts 55 Medicare patients who saw Dr. Theodorou in 2024. The largest group is under 65, with 16 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 42% are also on Medicaid. Their average risk score is 3.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Theodorou's median patient age at 70, with 51% women.
Dr. Theodorou's Medicare patients by age, 2024
Dr. Theodorou's Medicare patients by sex, 2024
- Women3665%
- Men1935%
Chronic conditions among Dr. Theodorou's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis69%
- Chronic kidney disease64%
- Ischemic heart disease58%
- Mood disorders49%
- Diabetes47%
- Depression45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Theodorou'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
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maria E. Theodorou wrote 442 Medicare Part D claims in 2024
In 2024, Dr. Theodorou wrote 442 Medicare Part D claims for 17 patients. 82% of them were for generic drugs. CMS names the drug for 136 of them, across 8 drugs with 11 or more claims each, at $4,952 in total drug cost. In 2023, CMS named 46 claims across 2 drugs.
Dr. Theodorou's Part D claims by kind of drug, 2024
- Generic363 claims82%
- Brand-name58 claims13%
- Other21 claims5%
Dr. Theodorou'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. Theodorou's Part D claims, 2024
- Opioids23%102 of 442 claims
- Antibiotics3%12 of 442 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: 462024: 136196%
Drugs named by CMS: 8 in 2024, 2 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. Maria E. Theodorou scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Theodorou for performance year 2024, reported through an alternative payment model (APM). Dr. Theodorou accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Theodorou's MIPS scores, performance year 2024
- 95of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Maria E. Theodorou has 4 publications on record
Dmand AI links 4 papers to Dr. Theodorou, published from 2020 to 2024. 2020 was the busiest year, with 2. The most frequent topics are Endocarditis, Bacterial and Gram-Positive Bacterial Infections. Dr. Theodorou's most frequent co-authors are Kelly E. R. Bachta, MD, PhD, Susan E. Cohn, MD and Phillip Pasquale Santoiemma, MD.
Dr. Theodorou's papers by year, 2020 to 2024
Topics Dr. Theodorou writes about most
- Endocarditis, Bacterial
- Gram-Positive Bacterial Infections
Dr. Theodorou's most frequent co-authors
- Kelly E. R. Bachta, MD, PhD1 shared paper
- Susan E. Cohn, MD1 shared paper
- Phillip Pasquale Santoiemma, MD1 shared paper
Recent publications by Dr. Theodorou
Jt Comm J Qual Patient Saf
See who Dr. Theodorou researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Theodorou works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Maria E. Theodorou received $140 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Theodorou from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Celgene Corporation paid the most, $140.
Companies that paid Dr. Theodorou the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Maria E. Theodorou graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. Theodorou graduated from Loyola University of Chicago, Stritch School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Maria E. Theodorou'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)Clinician Public Reporting: Overall MIPS Performance (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. Maria E. Theodorou
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. Maria E. Theodorou's NPI number?
Dr. Maria E. Theodorou's NPI number is 1427390244. It was assigned on March 19, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Maria E. Theodorou?
Dr. Maria E. Theodorou is a hospitalist in Gary, Indiana. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Maria E. Theodorou practice?
Dr. Theodorou practices at 600 Grant St, Gary, IN 46402. Dr. Theodorou's primary practice is Methodist Hospitals - Northlake in Gary, Indiana, part of The Methodist Hospitals. Dmand AI also links Dr. Theodorou to 1 hospital.
What is Dr. Maria E. Theodorou's office phone number?
The practice phone on file for Dr. Theodorou is (219) 886-4000.
What is Dr. Maria E. Theodorou's medical license number?
Dr. Theodorou holds Illinois license 036139541.
Which hospitals is Dr. Maria E. Theodorou affiliated with?
Dr. Theodorou practices at Methodist Hospitals - Northlake in Gary, Indiana. Dr. Theodorou is also affiliated with Northwestern Memorial Hospital. Dmand AI links Dr. Theodorou to 1 more hospital.
What medical group is Dr. Maria E. Theodorou part of?
Dr. Theodorou is linked to Northwestern Medical Faculty Foundation.
Does Dr. Maria E. Theodorou accept Medicare?
Yes. CMS data shows Dr. Theodorou billed Medicare for 115 services in 2024, and Dr. Theodorou accepts Medicare assignment.
What is Dr. Maria E. Theodorou's MIPS score?
Dr. Theodorou's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Maria E. Theodorou see?
CMS counts 55 Medicare patients who saw Dr. Theodorou in 2024, with an average age of 71.
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What services does Dr. Maria E. Theodorou bill to Medicare?
In 2024, Dr. Theodorou's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Where did Dr. Maria E. Theodorou go to medical school?
Dr. Theodorou graduated from Loyola University of Chicago, Stritch School of Medicine in 2013.
What drugs does Dr. Maria E. Theodorou prescribe most?
In 2024 Medicare Part D data, Dr. Theodorou's most prescribed drugs by claims were Hydromorphone HCl, Oxycodone-Acetaminophen and Atorvastatin Calcium.
Has Dr. Maria E. Theodorou received payments from drug or device companies?
CMS Open Payments shows $140 in general payments to Dr. Theodorou from 1 company from 2017 to 2017. The largest total came from Celgene Corporation.
How long has Dr. Maria E. Theodorou been practicing?
Dr. Theodorou graduated from medical school in 2013, 13 years ago.
Does Dr. Maria E. Theodorou do research?
Dmand AI links 4 publications to Dr. Theodorou, published from 2020 to 2024.
Who does Dr. Maria E. Theodorou publish with?
Dr. Theodorou's most frequent co-authors are Kelly E. R. Bachta, MD, PhD (1 shared paper), Susan E. Cohn, MD (1 shared paper) and Phillip Pasquale Santoiemma, MD (1 shared paper).
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