Dr. Marnin A. Merrick, MD
- Medicare services, 2024
- 569
- Medicare patients, 2024
- 112
- Part D claims, 2024
- 21
- Hospital affiliations
- 2
- Industry payments
- $9,040
- Practice address
- 200 Exempla Cir, Lafayette, CO 80026
- Practice phone
- Call (303) 689-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Merrick'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. Marnin A. Merrick is a hematologist and oncologist in Lafayette, Colorado
Dr. Merrick practices at Good Samaritan Hospital in Lafayette, Colorado, part of Intermountain Health.
Dr. Merrick's NPI, 1114132818, was assigned on May 14, 2007. Dr. Merrick graduated from Yale University School of Medicine in 1985. Dr. Merrick holds Louisiana license MD.202844.
- NPI
- 1114132818NPI Registry (opens in a new tab)
- NPI enumeration date
- May 14, 2007
- NPI status
- Active
- Practice phone
- (303) 689-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Marnin A. Merrick practices at Good Samaritan Hospital in Lafayette, Colorado
Dr. Merrick's primary practice is Good Samaritan Hospital, at 200 Exempla Cir, Lafayette, CO 80026 in Boulder County. The practice phone is (303) 689-4000.
- Good Samaritan Hospital200 Exempla Cir, Lafayette, CO 80026 · Boulder CountyPhone(303) 689-4000
Source: Dmand AI Affiliation Data
Dr. Marnin A. Merrick is affiliated with 2 sites of care and 3 medical groups
Dr. Merrick's primary practice is Good Samaritan Hospital in Lafayette, Colorado, part of Intermountain Health. Dr. Merrick is also affiliated with Trinity Hospital. The medical group on file is Intermountain Health. Dmand AI also links Dr. Merrick to 2 more medical groups, 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. Marnin A. Merrick's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merrick practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Good Samaritan Hospital | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marnin A. Merrick is one of 179 hematologists and oncologists in Colorado
Hematology and oncology is Dr. Merrick's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dmand AI has Dr. Merrick's licenses on file in 3 states: Louisiana, Kentucky and North Dakota.
Specialties and state licenses
- Hematology and oncology, LouisianaPrimary
- Radiation oncology, Kentucky
- North Dakota license
Hematologists and oncologists near Dr. Merrick
Counts of hematologists and oncologists 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. Marnin A. Merrick billed Medicare for 569 services in 2024
CMS data shows 569 Medicare services from Dr. Merrick across 7 procedure codes in 2024, for 112 Medicare patients. Medicare paid $32,470 for them. Every service was in an office.
Dr. Merrick's Medicare services by type, 2018 to 2024
- 2018
- 2024
- Imaging
- 2018: 2352024: 479104%
- Office and hospital visits
- 2018: 02024: 90
Dr. Merrick compared with the Colorado median for hematologists and oncologists, 2024
- Dr. Merrick
- Colorado median
- Medicare services
- 569vs 6249% below
- Medicare patients
- 112vs 24254% below
Medians across 181 hematologists and oncologists in Colorado with Dmand AI profiles that report each measure.
Dr. Merrick'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. Merrick and other hematologists and oncologists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marnin A. Merrick treated 112 Medicare patients in 2024, average age 75
CMS counts 112 Medicare patients who saw Dr. Merrick in 2024. The largest group is 65 to 74, with 57 patients. 75% of them have cancer, and 75% have high blood pressure. Their average risk score is 1.40, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Merrick's median patient age at 69, with 35% women.
Dr. Merrick's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Merrick's Medicare patients by sex, 2024
- Women1614%
- Men9686%
Chronic conditions among Dr. Merrick's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol71%
- Arthritis46%
- Tobacco use25%
- Ischemic heart disease24%
- Diabetes22%
- COPD21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Merrick's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women35%
- Men65%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marnin A. Merrick wrote 21 Medicare Part D claims in 2024
In 2024, Dr. Merrick wrote 21 Medicare Part D claims. 100% of them were for generic drugs.
Drug classes CMS tracks in Dr. Merrick's Part D claims, 2024
- Antibiotics52%11 of 21 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Marnin A. Merrick received $9,040 in industry payments from 2016 to 2025
CMS Open Payments shows 52 general payments to Dr. Merrick from 29 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 67% of the total. AstraZeneca Pharmaceuticals LP paid the most, $3,800.
General payments to Dr. Merrick by program year, 2016 to 2025
General payments to Dr. Merrick by kind, 2016 to 2025
- Consulting fees$6,05867%
- Food and beverage$1,48216%
- Travel and lodging$1,00011%
- Speaker and faculty fees$3504%
- Honoraria$1502%
Companies that paid Dr. Merrick the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marnin A. Merrick graduated from Yale University School of Medicine
Dr. Merrick graduated from Yale University School of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marnin A. Merrick'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 (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. Marnin A. Merrick
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. Marnin A. Merrick's NPI number?
Dr. Marnin A. Merrick's NPI number is 1114132818. It was assigned on May 14, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Marnin A. Merrick?
Dr. Marnin A. Merrick is a hematologist and oncologist in Lafayette, Colorado. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Marnin A. Merrick practice?
Dr. Merrick practices at 200 Exempla Cir, Lafayette, CO 80026. Dr. Merrick's primary practice is Good Samaritan Hospital in Lafayette, Colorado, part of Intermountain Health. Dmand AI also links Dr. Merrick to 2 medical groups.
What is Dr. Marnin A. Merrick's office phone number?
The practice phone on file for Dr. Merrick is (303) 689-4000.
What is Dr. Marnin A. Merrick's medical license number?
Dr. Merrick holds Louisiana license MD.202844, one of the licenses on file in 3 states.
Which states has Dr. Marnin A. Merrick been licensed in?
Dmand AI has state licenses on file for Dr. Merrick in Louisiana, Kentucky and North Dakota.
Which hospitals is Dr. Marnin A. Merrick affiliated with?
Dr. Merrick practices at Good Samaritan Hospital in Lafayette, Colorado. Dr. Merrick is also affiliated with Trinity Hospital.
What medical group is Dr. Marnin A. Merrick part of?
Dr. Merrick is linked to Intermountain Health. Dmand AI links Dr. Merrick to 2 more medical groups.
Does Dr. Marnin A. Merrick accept Medicare?
Yes. CMS data shows Dr. Merrick billed Medicare for 569 services in 2024.
How many Medicare patients does Dr. Marnin A. Merrick see?
CMS counts 112 Medicare patients who saw Dr. Merrick in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Marnin A. Merrick bill to Medicare?
In 2024, Dr. Merrick's most billed Medicare services were radiation oncology (77014), radiation oncology (77427) and office visit, established patient (99214).
Where did Dr. Marnin A. Merrick go to medical school?
Dr. Merrick graduated from Yale University School of Medicine in 1985.
Has Dr. Marnin A. Merrick received payments from drug or device companies?
CMS Open Payments shows $9,040 in general payments to Dr. Merrick from 29 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Marnin A. Merrick been practicing?
Dr. Merrick graduated from medical school in 1985, 41 years ago.
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