Dr. Marie E. Dy-Guillaume, MD
- Medicare services, 2024
- 22
- Medicare patients, 2024
- 15
- Part D claims, 2024
- 1,049
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 87-8 Justice Ave, Elmhurst, NY 11373
- Practice phone
- Call (646) 286-6921
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Elmhurst Queens Gastroenterology and Hepatology Medical Consultant P.C
Elmhurst, New York
Find Dr. Dy-Guillaume'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. Marie E. Dy-Guillaume is an infectious disease specialist in Elmhurst, New York
Dr. Dy-Guillaume practices at Elmhurst Queens Gastroenterology and Hepatology Medical Consultant P.C in Elmhurst, New York.
Dr. Dy-Guillaume's NPI, 1538123922, was assigned on April 13, 2006. Dr. Dy-Guillaume graduated from University of Santo Tomas in 1985. Dr. Dy-Guillaume holds New York license 201321.
- NPI
- 1538123922NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810988540
- NPI enumeration date
- April 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (646) 286-6921
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marie E. Dy-Guillaume practices at Elmhurst Queens Gastroenterology and Hepatology Medical Consultant P.C in Elmhurst, New York
Dr. Dy-Guillaume's primary practice is Elmhurst Queens Gastroenterology and Hepatology Medical Consultant P.C, at 87-8 Justice Ave, Elmhurst, NY 11373 in Queens County. The practice phone is (646) 286-6921.
- Elmhurst Queens Gastroenterology and Hepatology Medical Consultant P.C87-8 Justice Ave, Elmhurst, NY 11373 · Queens CountyPhone(646) 286-6921
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marie E. Dy-Guillaume is affiliated with 2 sites of care and 1 medical group
Dr. Dy-Guillaume's primary practice is Elmhurst Queens Gastroenterology and Hepatology Medical Consultant P.C in Elmhurst, New York. The medical group on file is Medical Associates, PC. Dmand AI also links Dr. Dy-Guillaume to 1 more group practice or clinic, 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. Marie E. Dy-Guillaume's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dy-Guillaume practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Elmhurst Queens Gastroenterology and Hepatology Medical Consultant P.C | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marie E. Dy-Guillaume is one of 825 infectious disease specialists in New York
Infectious disease is Dr. Dy-Guillaume's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Dy-Guillaume is licensed in New York.
Specialties and state licenses
- Infectious disease, New YorkPrimary
Infectious disease specialists near Dr. Dy-Guillaume
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. Marie E. Dy-Guillaume billed Medicare for 22 services in 2024
CMS data shows 22 Medicare services from Dr. Dy-Guillaume across 1 procedure code in 2024, all of them office visits, for 15 Medicare patients. Medicare paid $1,993 for them. Every service was in an office.
Dr. Dy-Guillaume's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 462024: 2252%
- Tests and treatments
- 2023: 122024: 0100%
- Other services
- 2023: 232024: 0100%
Dr. Dy-Guillaume compared with the New York median for infectious disease specialists, 2024
- Dr. Dy-Guillaume
- New York median
- Medicare services
- 22vs 23891% below
- Medicare patients
- 15vs 13489% below
- Part D claims
- 740vs 1624.6 times
Medians across 791 infectious disease specialists in New York with Dmand AI profiles that report each measure.
Dr. Dy-Guillaume'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. Dy-Guillaume?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dy-Guillaume and other infectious disease specialists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marie E. Dy-Guillaume treated 15 Medicare patients in 2024, average age 76
CMS counts 15 Medicare patients who saw Dr. Dy-Guillaume in 2024. The largest group is under 65, with 0 patients. 75% of them have high cholesterol, and 73% have high blood pressure. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Dy-Guillaume's median patient age at 55, with 71% women.
Dr. Dy-Guillaume's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Dy-Guillaume's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dy-Guillaume'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
- Women71%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marie E. Dy-Guillaume wrote 1,049 Medicare Part D claims in 2024
In 2024, Dr. Dy-Guillaume wrote 1,049 Medicare Part D claims for 88 patients. 89% of them were for generic drugs. CMS names the drug for 740 of them, across 20 drugs with 11 or more claims each, at $53,888 in total drug cost. In 2023, CMS named 578 claims across 19 drugs.
Dr. Dy-Guillaume's Part D claims by kind of drug, 2024
- Generic936 claims89%
- Brand-name and other113 claims11%
Dr. Dy-Guillaume'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: 5782024: 74028%
Drugs named by CMS: 20 in 2024, 19 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. Marie E. Dy-Guillaume takes part in Medicare
Dr. Dy-Guillaume 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. Marie E. Dy-Guillaume graduated from University of Santo Tomas
Dr. Dy-Guillaume graduated from University of Santo Tomas in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marie E. Dy-Guillaume'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) |
| 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. Marie E. Dy-Guillaume
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. Marie E. Dy-Guillaume's NPI number?
Dr. Marie E. Dy-Guillaume's NPI number is 1538123922. It was assigned on April 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marie E. Dy-Guillaume?
Dr. Marie E. Dy-Guillaume is an infectious disease specialist in Elmhurst, New York. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Marie E. Dy-Guillaume practice?
Dr. Dy-Guillaume practices at 87-8 Justice Ave, Elmhurst, NY 11373. Dr. Dy-Guillaume's primary practice is Elmhurst Queens Gastroenterology and Hepatology Medical Consultant P.C in Elmhurst, New York. Dmand AI also links Dr. Dy-Guillaume to 1 group practice or clinic.
What is Dr. Marie E. Dy-Guillaume's office phone number?
The practice phone on file for Dr. Dy-Guillaume is (646) 286-6921.
What is Dr. Marie E. Dy-Guillaume's medical license number?
Dr. Dy-Guillaume holds New York license 201321.
What medical group is Dr. Marie E. Dy-Guillaume part of?
Dr. Dy-Guillaume is linked to Medical Associates, PC.
Does Dr. Marie E. Dy-Guillaume accept Medicare?
Yes. CMS data shows Dr. Dy-Guillaume billed Medicare for 22 services in 2024, and Dr. Dy-Guillaume accepts Medicare assignment.
How many Medicare patients does Dr. Marie E. Dy-Guillaume see?
CMS counts 15 Medicare patients who saw Dr. Dy-Guillaume in 2024, with an average age of 76.
What services does Dr. Marie E. Dy-Guillaume bill to Medicare?
In 2024, Dr. Dy-Guillaume's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Marie E. Dy-Guillaume go to medical school?
Dr. Dy-Guillaume graduated from University of Santo Tomas in 1985.
What drugs does Dr. Marie E. Dy-Guillaume prescribe most?
In 2024 Medicare Part D data, Dr. Dy-Guillaume's most prescribed drugs by claims were Amlodipine Besylate, Losartan Potassium and Atorvastatin Calcium.
How long has Dr. Marie E. Dy-Guillaume been practicing?
Dr. Dy-Guillaume graduated from medical school in 1985, 41 years ago.
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