Dr. Mary Ellen Gallagher, MD
- Medicare services, 2024
- 691
- Medicare patients, 2024
- 106
- Part D claims, 2024
- 980
- Hospital affiliations
- 2
- Industry payments
- $4,006
- Practice address
- 2501 N Glebe Rd, Arlington, VA 22207-3558
- Practice phone
- Call (703) 527-6664
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northern Virginia Internal Medicine and Pediatrics
Physician office · Arlington, Virginia
Find Dr. Gallagher's professional email, personal email and mobile number
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Dr. Mary Ellen Gallagher is an internist in Arlington, Virginia
Dr. Gallagher practices at Northern Virginia Internal Medicine and Pediatrics in Arlington, Virginia.
Dr. Gallagher's NPI, 1417956814, was assigned on July 18, 2005. Dr. Gallagher holds Virginia license 01235679.
- NPI
- 1417956814NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315917788
- NPI enumeration date
- July 18, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (703) 527-6664
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Ellen Gallagher practices at Northern Virginia Internal Medicine and Pediatrics in Arlington, Virginia
Dr. Gallagher's primary practice is Northern Virginia Internal Medicine and Pediatrics, at 2501 N Glebe Rd, Arlington, VA 22207-3558. The practice phone is (703) 527-6664.
- Northern Virginia Internal Medicine and Pediatrics2501 N Glebe Rd, Arlington, VA 22207-3558Phone(703) 527-6664
Source: Dmand AI Affiliation Data
Dr. Mary Ellen Gallagher is affiliated with 3 sites of care
Dr. Gallagher's primary practice is Northern Virginia Internal Medicine and Pediatrics in Arlington, Virginia. Dr. Gallagher is also affiliated with VHC Health. Dmand AI also links Dr. Gallagher to 1 more hospital, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mary Ellen Gallagher's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gallagher practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Virginia Internal Medicine and Pediatrics | 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. Mary Ellen Gallagher is one of 3,339 internists in Virginia
Internal medicine is Dr. Gallagher's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gallagher is licensed in Virginia.
Specialties and state licenses
- Internal medicine, VirginiaPrimary
Internists near Dr. Gallagher
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. Mary Ellen Gallagher billed Medicare for 691 services in 2024
CMS data shows 691 Medicare services from Dr. Gallagher across 9 procedure codes in 2024, for 106 Medicare patients. Medicare paid $40,260 for them. Every service was in an office.
Dr. Gallagher's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2682024: 23811%
- Surgery
- 2023: 1032024: 14844%
- Other services
- 2023: 1572024: 1467%
- Lab and pathology
- 2023: 732024: 10240%
- Tests and treatments
- 2023: 422024: 5736%
Dr. Gallagher compared with the Virginia median for internists, 2024
- Dr. Gallagher
- Virginia median
- Medicare services
- 691vs 60714% above
- Medicare patients
- 106vs 24657% below
- Part D claims
- 487vs 2242.2 times
Medians across 3,182 internists in Virginia with Dmand AI profiles that report each measure.
Dr. Gallagher'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. Gallagher and other internists in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Ellen Gallagher treated 106 Medicare patients in 2024, average age 72
CMS counts 106 Medicare patients who saw Dr. Gallagher in 2024. The largest group is 65 to 74, with 60 patients. 63% of them have high cholesterol, and 49% have high blood pressure. Their average risk score is 0.73, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gallagher's median patient age at 53, with 60% women.
Dr. Gallagher's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gallagher's Medicare patients by sex, 2024
- Women7167%
- Men3533%
Chronic conditions among Dr. Gallagher's Medicare patients, 2024
- High cholesterol63%
- High blood pressure49%
- Arthritis42%
- Anxiety23%
- Osteoporosis20%
- Chronic kidney disease17%
- Mood disorders17%
- Depression16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gallagher's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
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. Mary Ellen Gallagher wrote 980 Medicare Part D claims in 2024
In 2024, Dr. Gallagher wrote 980 Medicare Part D claims for 102 patients. 89% of them were for generic drugs. CMS names the drug for 487 of them, across 22 drugs with 11 or more claims each, at $5,744 in total drug cost. In 2023, CMS named 460 claims across 21 drugs.
Dr. Gallagher's Part D claims by kind of drug, 2024
- Generic876 claims89%
- Brand-name92 claims9%
- Other12 claims1%
Dr. Gallagher'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. Gallagher's Part D claims, 2024
- Opioids3%27 of 980 claims
- Antibiotics7%67 of 980 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: 4602024: 4876%
Drugs named by CMS: 22 in 2024, 21 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. Mary Ellen Gallagher takes part in Medicare
Dr. Gallagher 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. Mary Ellen Gallagher received $4,006 in industry payments from 2016 to 2025
CMS Open Payments shows 125 general payments to Dr. Gallagher from 32 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 53% of the total. Welch Allyn paid the most, $1,868.
General payments to Dr. Gallagher by program year, 2016 to 2025
General payments to Dr. Gallagher by kind, 2016 to 2025
- Food and beverage$2,11353%
- Gifts$1,86847%
- Education$251%
Companies that paid Dr. Gallagher the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mary Ellen Gallagher'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 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) |
| 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. Mary Ellen Gallagher
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. Mary Ellen Gallagher's NPI number?
Dr. Mary Ellen Gallagher's NPI number is 1417956814. It was assigned on July 18, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Ellen Gallagher?
Dr. Mary Ellen Gallagher is an internist in Arlington, Virginia. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mary Ellen Gallagher practice?
Dr. Gallagher practices at 2501 N Glebe Rd, Arlington, VA 22207-3558. Dr. Gallagher's primary practice is Northern Virginia Internal Medicine and Pediatrics in Arlington, Virginia. Dmand AI also links Dr. Gallagher to 1 hospital.
What is Dr. Mary Ellen Gallagher's office phone number?
The practice phone on file for Dr. Gallagher is (703) 527-6664.
What is Dr. Mary Ellen Gallagher's medical license number?
Dr. Gallagher holds Virginia license 01235679.
Which hospitals is Dr. Mary Ellen Gallagher affiliated with?
Dr. Gallagher is affiliated with VHC Health. Dmand AI links Dr. Gallagher to 1 more hospital.
Does Dr. Mary Ellen Gallagher accept Medicare?
Yes. CMS data shows Dr. Gallagher billed Medicare for 691 services in 2024, and Dr. Gallagher accepts Medicare assignment.
How many Medicare patients does Dr. Mary Ellen Gallagher see?
CMS counts 106 Medicare patients who saw Dr. Gallagher in 2024, with an average age of 72.
What services does Dr. Mary Ellen Gallagher bill to Medicare?
In 2024, Dr. Gallagher's most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99214) and office visit, established patient (99215).
What drugs does Dr. Mary Ellen Gallagher prescribe most?
In 2024 Medicare Part D data, Dr. Gallagher's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Metformin HCl.
Has Dr. Mary Ellen Gallagher received payments from drug or device companies?
CMS Open Payments shows $4,006 in general payments to Dr. Gallagher from 32 companies from 2016 to 2025. The largest total came from Welch Allyn.
How long has Dr. Mary Ellen Gallagher been practicing?
Dr. Gallagher graduated from medical school in 1999, 27 years ago.
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