Dr. Miechelle L. O'Brien, MD
- Medicare services, 2024
- 284
- Medicare patients, 2024
- 190
- Part D claims, 2024
- 516
- Hospital affiliations
- 1
- Industry payments
- $1,483
- Practice address
- 73 Sandpit Rd, Danbury, CT 06810
- Practice phone
- Call (203) 743-2400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Danbury Surgery Center
Danbury, Connecticut
Find Dr. O'Brien'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. Miechelle L. O'Brien is a gastroenterologist in Danbury, Connecticut
Dr. O'Brien practices at Danbury Surgery Center in Danbury, Connecticut.
Dr. O'Brien's NPI, 1356582571, was assigned on March 18, 2009. Dr. O'Brien graduated from New York Medical College in 2003. Dr. O'Brien holds Connecticut license 047450.
- NPI
- 1356582571NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810041746
- NPI enumeration date
- March 18, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 743-2400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Miechelle L. O'Brien practices at Danbury Surgery Center in Danbury, Connecticut
Dr. O'Brien's primary practice is Danbury Surgery Center, at 73 Sandpit Rd, Danbury, CT 06810 in Western Ct County. The practice phone is (203) 743-2400.
- Danbury Surgery Center73 Sandpit Rd, Danbury, CT 06810 · Western Ct CountyPhone(203) 743-2400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Miechelle L. O'Brien is affiliated with 3 sites of care and 1 medical group
Dr. O'Brien's primary practice is Danbury Surgery Center in Danbury, Connecticut. Dr. O'Brien is also affiliated with Northwell Danbury Hospital. The medical group on file is Danbury Medical Group. Dmand AI also links Dr. O'Brien 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. Miechelle L. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Danbury Surgery Center | Available with a free account |
| +2 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.
Dr. Miechelle L. O'Brien is one of 298 gastroenterologists in Connecticut
Gastroenterology is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. O'Brien is licensed in Connecticut.
Specialties and state licenses
- Gastroenterology, ConnecticutPrimary
Gastroenterologists near Dr. O'Brien
Counts of gastroenterologists 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. Miechelle L. O'Brien billed Medicare for 284 services in 2024
CMS data shows 284 Medicare services from Dr. O'Brien across 9 procedure codes in 2024, for 190 Medicare patients. Medicare paid $32,794 for them.
Dr. O'Brien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1402024: 15611%
- Office and hospital visits
- 2023: 1382024: 11715%
- Other services
- 2023: 02024: 11
Where Dr. O'Brien's Medicare services took place, 2024
- In an office11741%
- In a facility16759%
Dr. O'Brien compared with the Connecticut median for gastroenterologists, 2024
- Dr. O'Brien
- Connecticut median
- Medicare services
- 284vs 36121% below
- Medicare patients
- 190vs 25325% below
- Part D claims
- 378vs 53830% below
Medians across 284 gastroenterologists in Connecticut with Dmand AI profiles that report each measure.
Dr. O'Brien'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. O'Brien?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. O'Brien and other gastroenterologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Miechelle L. O'Brien treated 190 Medicare patients in 2024, average age 74
CMS counts 190 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 65 to 74, with 78 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 13% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 63, with 82% women.
Dr. O'Brien's Medicare patients by age, 2024
Dr. O'Brien's Medicare patients by sex, 2024
- Women15582%
- Men3518%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis47%
- Osteoporosis28%
- Anxiety27%
- Mood disorders24%
- Depression22%
- Diabetes22%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women82%
- Men16%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Miechelle L. O'Brien wrote 516 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 516 Medicare Part D claims for 184 patients. 84% of them were for generic drugs. CMS names the drug for 378 of them, across 11 drugs with 11 or more claims each, at $69,918 in total drug cost. In 2023, CMS named 367 claims across 9 drugs.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic434 claims84%
- Brand-name and other82 claims16%
Dr. O'Brien'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. O'Brien's Part D claims, 2024
- Antibiotics7%37 of 516 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: 3672024: 3783%
Drugs named by CMS: 11 in 2024, 9 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. Miechelle L. O'Brien ranks in the 66th percentile for colonoscopy in Medicare
Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. O'Brien as offering telehealth. CMS counts 55 procedures of colonoscopy by Dr. O'Brien, more than 66% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. O'Brien ranks in Medicare procedure volume
- Colonoscopy
- 66th percentile55 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 60th percentile42 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (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.
Dr. Miechelle L. O'Brien received $1,483 in industry payments from 2016 to 2024
CMS Open Payments shows 43 general payments to Dr. O'Brien from 15 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $738.
General payments to Dr. O'Brien by program year, 2016 to 2024
Companies that paid Dr. O'Brien the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Miechelle L. O'Brien graduated from New York Medical College
Dr. O'Brien graduated from New York Medical College in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Miechelle L. O'Brien'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)Doctors and Clinicians Utilization Data (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. Miechelle L. O'Brien
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. Miechelle L. O'Brien's NPI number?
Dr. Miechelle L. O'Brien's NPI number is 1356582571. It was assigned on March 18, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Miechelle L. O'Brien?
Dr. Miechelle L. O'Brien is a gastroenterologist in Danbury, Connecticut. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Miechelle L. O'Brien practice?
Dr. O'Brien practices at 73 Sandpit Rd, Danbury, CT 06810. Dr. O'Brien's primary practice is Danbury Surgery Center in Danbury, Connecticut. Dmand AI also links Dr. O'Brien to 1 group practice or clinic.
What is Dr. Miechelle L. O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (203) 743-2400.
What is Dr. Miechelle L. O'Brien's medical license number?
Dr. O'Brien holds Connecticut license 047450.
Which hospitals is Dr. Miechelle L. O'Brien affiliated with?
Dr. O'Brien is affiliated with Northwell Danbury Hospital.
What medical group is Dr. Miechelle L. O'Brien part of?
Dr. O'Brien is linked to Danbury Medical Group.
Does Dr. Miechelle L. O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 284 services in 2024, and Dr. O'Brien accepts Medicare assignment.
Does Dr. Miechelle L. O'Brien offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. O'Brien as offering telehealth services.
How many Medicare patients does Dr. Miechelle L. O'Brien see?
CMS counts 190 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Miechelle L. O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were surgery: digestive system (45380), surgery: digestive system (43239) and office visit, established patient (99215).
Where did Dr. Miechelle L. O'Brien go to medical school?
Dr. O'Brien graduated from New York Medical College in 2003.
What drugs does Dr. Miechelle L. O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Famotidine.
Has Dr. Miechelle L. O'Brien received payments from drug or device companies?
CMS Open Payments shows $1,483 in general payments to Dr. O'Brien from 15 companies from 2016 to 2024. The largest total came from Abbvie Inc.
How long has Dr. Miechelle L. O'Brien been practicing?
Dr. O'Brien graduated from medical school in 2003, 23 years ago.
Selling to gastroenterology practices?
See gastroenterologists in Connecticut 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