Dr. Maria Elena Ruiz, MD
- Medicare services, 2024
- 422
- Medicare patients, 2024
- 190
- Part D claims, 2024
- 193
- Hospital affiliations
- 1
- Industry payments
- $472
- Practice address
- 900 23rd St NW, Washington, DC 20037
- Practice phone
- Call (202) 716-4605
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ruiz's professional email, personal email and mobile number
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Dr. Maria Elena Ruiz is an infectious disease specialist in Washington, District of Columbia
Dr. Ruiz practices at The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services.
Dr. Ruiz's NPI, 1811947260, was assigned on May 10, 2006. Dr. Ruiz graduated from George Washington University School of Medicine in 1997. Dr. Ruiz holds District of Columbia license MD31414.
- NPI
- 1811947260NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880651314
- NPI enumeration date
- May 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (202) 716-4605
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Maria Elena Ruiz practices at The George Washington University Hospital in Washington, District of Columbia
Dr. Ruiz's primary practice is The George Washington University Hospital, at 900 23rd St NW, Washington, DC 20037 in The District County. The practice phone is (202) 716-4605.
- The George Washington University Hospital900 23rd St NW, Washington, DC 20037 · The District CountyPhone(202) 716-4605
Source: Dmand AI Affiliation Data
Dr. Maria Elena Ruiz is affiliated with 3 sites of care and 2 medical groups
Dr. Ruiz's primary practice is The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services. The medical group on file is The GW Medical Faculty Associates. Dmand AI also links Dr. Ruiz to 2 more group practices and clinics and 1 medical group, each 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 Elena Ruiz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ruiz practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The George Washington University Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maria Elena Ruiz is one of 84 infectious disease specialists in District of Columbia
Infectious disease is Dr. Ruiz's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Ruiz is licensed in District of Columbia.
Specialties and state licenses
- Infectious disease, District of ColumbiaPrimary
Infectious disease specialists near Dr. Ruiz
Counts of infectious disease specialists 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 Elena Ruiz billed Medicare for 422 services in 2024
CMS data shows 422 Medicare services from Dr. Ruiz across 8 procedure codes in 2024, for 190 Medicare patients. Medicare paid $42,298 for them.
Dr. Ruiz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3592024: 40212%
- Other services
- 2023: 02024: 20
Where Dr. Ruiz's Medicare services took place, 2024
- In an office9923%
- In a facility32377%
Dr. Ruiz compared with the District of Columbia median for infectious disease specialists, 2024
- Dr. Ruiz
- District of Columbia median
- Medicare services
- 422vs 410Close to median
- Medicare patients
- 190vs 190Close to median
- Part D claims
- 115vs 17032% below
Medians across 58 infectious disease specialists in District of Columbia with Dmand AI profiles that report each measure.
Dr. Ruiz'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. Ruiz and other infectious disease specialists in District of Columbia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Maria Elena Ruiz treated 190 Medicare patients in 2024, average age 69
CMS counts 190 Medicare patients who saw Dr. Ruiz in 2024. The largest group is 65 to 74, with 79 patients. 75% of them have high blood pressure, and 71% have high cholesterol. 59% are also on Medicaid. Their average risk score is 3.26, 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. Ruiz's median patient age at 55, with 42% women.
Dr. Ruiz's Medicare patients by age, 2024
Dr. Ruiz's Medicare patients by sex, 2024
- Women8344%
- Men10756%
Chronic conditions among Dr. Ruiz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol71%
- Arthritis68%
- Ischemic heart disease61%
- Diabetes56%
- Chronic kidney disease51%
- Mood disorders45%
- Heart failure41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ruiz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women42%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maria Elena Ruiz wrote 193 Medicare Part D claims in 2024
In 2024, Dr. Ruiz wrote 193 Medicare Part D claims for 41 patients. 62% of them were for generic drugs. CMS names the drug for 115 of them, across 7 drugs with 11 or more claims each, at $215,505 in total drug cost. In 2023, CMS named 123 claims across 6 drugs.
Dr. Ruiz's Part D claims by kind of drug, 2024
- Generic120 claims62%
- Brand-name73 claims38%
Dr. Ruiz'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. Ruiz's Part D claims, 2024
- Antibiotics46%88 of 193 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: 1232024: 1157%
Drugs named by CMS: 7 in 2024, 6 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. Maria Elena Ruiz takes part in Medicare
Dr. Ruiz 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. Maria Elena Ruiz received $472 in industry payments from 2016 to 2025
CMS Open Payments shows 10 general payments to Dr. Ruiz from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 81% of the total. Abbvie Inc. paid the most, $227.
General payments to Dr. Ruiz by program year, 2016 to 2025
General payments to Dr. Ruiz by kind, 2016 to 2025
- Food and beverage$38081%
- Education$9119%
Companies that paid Dr. Ruiz 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. Maria Elena Ruiz graduated from George Washington University School of Medicine
Dr. Ruiz graduated from George Washington University School of Medicine in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Maria Elena Ruiz'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) |
| 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 Elena Ruiz
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 Elena Ruiz's NPI number?
Dr. Maria Elena Ruiz's NPI number is 1811947260. It was assigned on May 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Maria Elena Ruiz?
Dr. Maria Elena Ruiz is an infectious disease specialist in Washington, District of Columbia. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Maria Elena Ruiz practice?
Dr. Ruiz practices at 900 23rd St NW, Washington, DC 20037. Dr. Ruiz's primary practice is The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services. Dmand AI also links Dr. Ruiz to 2 group practices and clinics and 1 medical group.
What is Dr. Maria Elena Ruiz's office phone number?
The practice phone on file for Dr. Ruiz is (202) 716-4605.
What is Dr. Maria Elena Ruiz's medical license number?
Dr. Ruiz holds District of Columbia license MD31414.
Which hospitals is Dr. Maria Elena Ruiz affiliated with?
Dr. Ruiz practices at The George Washington University Hospital in Washington, District of Columbia.
What medical group is Dr. Maria Elena Ruiz part of?
Dr. Ruiz is linked to The GW Medical Faculty Associates. Dmand AI links Dr. Ruiz to 1 more medical group.
Does Dr. Maria Elena Ruiz accept Medicare?
Yes. CMS data shows Dr. Ruiz billed Medicare for 422 services in 2024, and Dr. Ruiz accepts Medicare assignment.
How many Medicare patients does Dr. Maria Elena Ruiz see?
CMS counts 190 Medicare patients who saw Dr. Ruiz in 2024, with an average age of 69.
What services does Dr. Maria Elena Ruiz bill to Medicare?
In 2024, Dr. Ruiz's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99223).
Show 4 more questionsShow fewer questions
Where did Dr. Maria Elena Ruiz go to medical school?
Dr. Ruiz graduated from George Washington University School of Medicine in 1997.
What drugs does Dr. Maria Elena Ruiz prescribe most?
In 2024 Medicare Part D data, Dr. Ruiz's most prescribed drugs by claims were Biktarvy, Doxycycline Hyclate and Cephalexin.
Has Dr. Maria Elena Ruiz received payments from drug or device companies?
CMS Open Payments shows $472 in general payments to Dr. Ruiz from 5 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Maria Elena Ruiz been practicing?
Dr. Ruiz graduated from medical school in 1997, 29 years ago.
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