Sean M. Macdermott
- Medicare services, 2024
- 134
- Medicare patients, 2024
- 89
- Part D claims, 2024
- 67
- Hospital affiliations
- 4
- Industry payments
- $1,840
- Practice address
- 16220 Frederick Rd, Gaithersburg, MD 20877
- Practice phone
- Call (301) 948-2995
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Shady Grove Ambulatory Surgery Center,LLC
Gaithersburg, Maryland
Find Sean Macdermott'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.
Sean M. Macdermott is an internist in Gaithersburg, Maryland
Sean Macdermott practices at Shady Grove Ambulatory Surgery Center,LLC in Gaithersburg, Maryland.
Sean Macdermott's NPI, 1326085432, was assigned on May 31, 2006. Sean Macdermott graduated from Midwestern University, Chicago College of Osteopathic Med in 2002. Sean Macdermott holds New Hampshire license 12348.
- NPI
- 1326085432NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254585805
- NPI enumeration date
- May 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (301) 948-2995
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Sean M. Macdermott practices at Shady Grove Ambulatory Surgery Center,LLC in Gaithersburg, Maryland
Sean Macdermott's primary practice is Shady Grove Ambulatory Surgery Center,LLC, at 16220 Frederick Rd, Gaithersburg, MD 20877 in Montgomery County. The practice phone is (301) 948-2995.
- Shady Grove Ambulatory Surgery Center,LLC16220 Frederick Rd, Gaithersburg, MD 20877 · Montgomery CountyPhone(301) 948-2995
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Sean M. Macdermott is affiliated with 6 sites of care and 1 medical group
Sean Macdermott's primary practice is Shady Grove Ambulatory Surgery Center,LLC in Gaithersburg, Maryland. Sean Macdermott is also affiliated with Holy Cross Hospital. The medical group on file is Privia Medical Group. Dmand AI also links Sean Macdermott to 3 more hospitals and 1 group practice or clinic, each 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 Sean M. Macdermott's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Sean Macdermott practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Shady Grove Ambulatory Surgery Center,LLC | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Sean M. Macdermott is one of 3,320 internists in Maryland
Internal medicine is Sean Macdermott's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Sean Macdermott is licensed in New Hampshire.
Specialties and state licenses
- Internal medicine, New HampshirePrimary
Internists near Sean Macdermott
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
Sean M. Macdermott billed Medicare for 134 services in 2024
CMS data shows 134 Medicare services from Sean Macdermott across 5 procedure codes in 2024, for 89 Medicare patients. Medicare paid $14,342 for them. Every service was in an office.
Sean Macdermott's Medicare services by type, 2024
- Office and hospital visits87
- Tests and treatments47
Sean Macdermott compared with the Maryland median for internists, 2024
- Sean Macdermott
- Maryland median
- Medicare services
- 134vs 65680% below
- Medicare patients
- 89vs 25165% below
- Part D claims
- 31vs 30990% below
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Sean Macdermott'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 Sean Macdermott?
Medicare shows one payer. Book a meeting to get commercial claims data for Sean Macdermott and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Sean M. Macdermott treated 89 Medicare patients in 2024, average age 76
CMS counts 89 Medicare patients who saw Sean Macdermott in 2024. The largest group is 65 to 74, with 39 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Sean Macdermott's median patient age at 66, with 57% women.
Sean Macdermott's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Sean Macdermott's Medicare patients by sex, 2024
- Women5360%
- Men3640%
Chronic conditions among Sean Macdermott's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes34%
- Ischemic heart disease34%
- Mood disorders30%
- Chronic kidney disease29%
- COPD28%
Share of Medicare patients with each condition. A patient can have several.
Sean Macdermott's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Sean M. Macdermott wrote 67 Medicare Part D claims in 2024
In 2024, Sean Macdermott wrote 67 Medicare Part D claims for 27 patients. 64% of them were for generic drugs. CMS names the drug for 31 of them, across 2 drugs with 11 or more claims each, at $1,871 in total drug cost.
Sean Macdermott's Part D claims by kind of drug, 2024
- Generic43 claims64%
- Brand-name24 claims36%
Sean Macdermott'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.
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
Sean M. Macdermott offers telehealth to Medicare patients
Sean Macdermott accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Sean Macdermott as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sean M. Macdermott received $1,840 in industry payments from 2016 to 2025
CMS Open Payments shows 76 general payments to Sean Macdermott from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $416.
General payments to Sean Macdermott by program year, 2016 to 2025
Companies that paid Sean Macdermott the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sean M. Macdermott graduated from Midwestern University, Chicago College of Osteopathic Med
Sean Macdermott graduated from Midwestern University, Chicago College of Osteopathic Med in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Sean M. Macdermott'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) |
| 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 Sean M. Macdermott
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Sean M. Macdermott's NPI number?
Sean M. Macdermott's NPI number is 1326085432. It was assigned on May 31, 2006, and it is active in the NPI Registry.
What does Sean M. Macdermott specialize in?
Sean M. Macdermott is an internist in Gaithersburg, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Sean M. Macdermott practice?
Sean Macdermott practices at 16220 Frederick Rd, Gaithersburg, MD 20877. Sean Macdermott's primary practice is Shady Grove Ambulatory Surgery Center,LLC in Gaithersburg, Maryland. Dmand AI also links Sean Macdermott to 3 hospitals and 1 group practice or clinic.
What is Sean M. Macdermott's office phone number?
The practice phone on file for Sean Macdermott is (301) 948-2995.
What is Sean M. Macdermott's medical license number?
Sean Macdermott holds New Hampshire license 12348.
Which hospitals is Sean M. Macdermott affiliated with?
Sean Macdermott is affiliated with Holy Cross Hospital. Dmand AI links Sean Macdermott to 3 more hospitals.
What medical group is Sean M. Macdermott part of?
Sean Macdermott is linked to Privia Medical Group.
Does Sean M. Macdermott accept Medicare?
Yes. CMS data shows Sean Macdermott billed Medicare for 134 services in 2024, and Sean Macdermott accepts Medicare assignment.
Does Sean M. Macdermott offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Sean Macdermott as offering telehealth services.
How many Medicare patients does Sean M. Macdermott see?
CMS counts 89 Medicare patients who saw Sean Macdermott in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Sean M. Macdermott bill to Medicare?
In 2024, Sean Macdermott's most billed Medicare services were office visit, new patient (99205), office visit, new patient (99204) and lung function service (94060).
Where did Sean M. Macdermott go to medical school?
Sean Macdermott graduated from Midwestern University, Chicago College of Osteopathic Med in 2002.
What drugs does Sean M. Macdermott prescribe most?
In 2024 Medicare Part D data, Sean Macdermott's most prescribed drugs by claims were Albuterol Sulfate Hfa and Fluticasone-Salmeterol.
Has Sean M. Macdermott received payments from drug or device companies?
CMS Open Payments shows $1,840 in general payments to Sean Macdermott from 17 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Sean M. Macdermott been practicing?
Sean Macdermott graduated from medical school in 2002, 24 years ago.
Selling to internal medicine practices?
See internists in Maryland by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card