Dr. Daniel L. O'Brien, DO
- Medicare services, 2024
- 26
- Medicare patients, 2024
- 24
- Part D claims, 2024
- 786
- Industry payments
- $68
- Affiliated sites
- 3
- Practice address
- 280 Exempla Cr, Lafayette, CO 80026
- Practice phone
- Call (303) 338-3456
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rock Creek Medical Offices
Mammography / Breast Imaging Center · Lafayette, Colorado
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. Daniel L. O'Brien is a family medicine physician in Lafayette, Colorado
Dr. O'Brien practices at Rock Creek Medical Offices in Lafayette, Colorado.
Dr. O'Brien's NPI, 1144404120, was assigned on December 26, 2007. Dr. O'Brien holds Colorado license 49274.
- NPI
- 1144404120NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325235872
- NPI enumeration date
- December 26, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (303) 338-3456
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel L. O'Brien practices at Rock Creek Medical Offices in Lafayette, Colorado
Dr. O'Brien's primary practice is Rock Creek Medical Offices, at 280 Exempla Cr, Lafayette, CO 80026. The practice phone is (303) 338-3456.
- Rock Creek Medical Offices280 Exempla Cr, Lafayette, CO 80026Phone(303) 338-3456
Source: Dmand AI Affiliation Data
Dr. Daniel L. O'Brien is affiliated with 3 sites of care and 2 medical groups
Dr. O'Brien's primary practice is Rock Creek Medical Offices in Lafayette, Colorado. The medical group on file is Colorado Permanente Medical Group. Dmand AI also links Dr. O'Brien to 1 more group practice or clinic, 1 therapy and rehab clinic 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. Daniel L. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rock Creek Medical Offices | Available with a free account |
| +2 more sites and 1 medical group | 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. Daniel L. O'Brien is one of 2,952 family medicine physicians in Colorado
Family medicine is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. O'Brien is licensed in Colorado.
Specialties and state licenses
- Family medicine, ColoradoPrimary
Family medicine physicians near Dr. O'Brien
Counts of family medicine physicians 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. Daniel L. O'Brien billed Medicare for 26 services in 2024
CMS data shows 26 Medicare services from Dr. O'Brien across 2 procedure codes in 2024, for 24 Medicare patients. Medicare paid $1,374 for them. Every service was in an office.
Dr. O'Brien's Medicare services by type, 2019 to 2024
- 2019
- 2024
- Tests and treatments
- 2019: 02024: 26
- Office and hospital visits
- 2019: 192024: 0100%
Dr. O'Brien compared with the Colorado median for family medicine physicians, 2024
- Dr. O'Brien
- Colorado median
- Medicare services
- 26vs 27290% below
- Medicare patients
- 24vs 12481% below
- Part D claims
- 454vs 68033% below
Medians across 2,975 family medicine physicians in Colorado 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 family medicine physicians in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel L. O'Brien treated 24 Medicare patients in 2024, average age 69
CMS counts 24 Medicare patients who saw Dr. O'Brien in 2024. 46% of them have high cholesterol. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 44, with 64% women.
Dr. O'Brien's Medicare patients by sex, 2024
- Women1250%
- Men1250%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- High cholesterol46%
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 44
Patient panel by sex, all payers
- Women64%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel L. O'Brien wrote 786 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 786 Medicare Part D claims for 485 patients. 83% of them were for generic drugs. CMS names the drug for 454 of them, across 21 drugs with 11 or more claims each, at $13,552 in total drug cost. In 2023, CMS named 389 claims across 14 drugs.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic651 claims83%
- Brand-name and other135 claims17%
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
- Opioids4%31 of 786 claims
- Antibiotics21%163 of 786 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: 3892024: 45417%
Drugs named by CMS: 21 in 2024, 14 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. Daniel L. O'Brien takes part in Medicare
Dr. O'Brien 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)
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. Daniel L. O'Brien received $68 in industry payments from 2017 to 2018
CMS Open Payments shows 4 general payments to Dr. O'Brien from 1 drug or device company from 2017 to 2018. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $68.
General payments to Dr. O'Brien by program year, 2017 to 2018
Companies that paid Dr. O'Brien the most, 2017 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Daniel 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 | 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) |
| 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. Daniel 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. Daniel L. O'Brien's NPI number?
Dr. Daniel L. O'Brien's NPI number is 1144404120. It was assigned on December 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel L. O'Brien?
Dr. Daniel L. O'Brien is a family medicine physician in Lafayette, Colorado. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Daniel L. O'Brien practice?
Dr. O'Brien practices at 280 Exempla Cr, Lafayette, CO 80026. Dr. O'Brien's primary practice is Rock Creek Medical Offices in Lafayette, Colorado. Dmand AI also links Dr. O'Brien to 1 group practice or clinic, 1 therapy and rehab clinic and 1 medical group.
What is Dr. Daniel L. O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (303) 338-3456.
What is Dr. Daniel L. O'Brien's medical license number?
Dr. O'Brien holds Colorado license 49274.
What medical group is Dr. Daniel L. O'Brien part of?
Dr. O'Brien is linked to Colorado Permanente Medical Group. Dmand AI links Dr. O'Brien to 1 more medical group.
Does Dr. Daniel L. O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 26 services in 2024, and Dr. O'Brien accepts Medicare assignment.
How many Medicare patients does Dr. Daniel L. O'Brien see?
CMS counts 24 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 69.
What services does Dr. Daniel L. O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were vaccine or vaccine administration (90480) and medical service (91320).
What drugs does Dr. Daniel L. O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Cefuroxime, Prednisone and Doxycycline Monohydrate.
Has Dr. Daniel L. O'Brien received payments from drug or device companies?
CMS Open Payments shows $68 in general payments to Dr. O'Brien from 1 company from 2017 to 2018. The largest total came from Pfizer Inc.
How long has Dr. Daniel L. O'Brien been practicing?
Dr. O'Brien graduated from medical school in 2007, 19 years ago.
Selling to family medicine practices?
See family medicine physicians in Colorado 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