Dr. Daniel K. Merrill, MD
- Medicare services, 2024
- 125
- Medicare patients, 2024
- 86
- Hospital affiliations
- 3
- Industry payments
- $356
- Medical groups
- 3
- Practice address
- 1601 West St Mary's Road, Tucson, AZ 85745
- Practice phone
- Call (520) 872-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Merrill'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 K. Merrill is a neurologist in Tucson, Arizona
Dr. Merrill practices at Carondelet St. Mary's Hospital in Tucson, Arizona, part of Tenet Healthcare.
Dr. Merrill's NPI, 1609895671, was assigned on July 19, 2006. Dr. Merrill holds Arizona license 32558.
- NPI
- 1609895671NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658398482
- NPI enumeration date
- July 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (520) 872-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel K. Merrill practices at Carondelet St. Mary's Hospital in Tucson, Arizona
Dr. Merrill's primary practice is Carondelet St. Mary's Hospital, at 1601 West St Mary's Road, Tucson, AZ 85745 in Pima County. The practice phone is (520) 872-3000.
- Carondelet St. Mary's Hospital1601 West St Mary's Road, Tucson, AZ 85745 · Pima CountyPhone(520) 872-3000
Source: Dmand AI Affiliation Data
Dr. Daniel K. Merrill is affiliated with 6 sites of care and 3 medical groups
Dr. Merrill's primary practice is Carondelet St. Mary's Hospital in Tucson, Arizona, part of Tenet Healthcare. Dr. Merrill is also affiliated with Dignity Health Mercy Gilbert Medical Center. The medical group on file is District Medical Group. Dmand AI also links Dr. Merrill to 1 more hospital, 2 therapy and rehab clinics, 2 medical groups and 1 physician office, 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 K. Merrill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merrill practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Carondelet St. Mary's Hospital | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel K. Merrill is one of 395 neurologists in Arizona
Neurology is Dr. Merrill's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Merrill is licensed in Arizona.
Specialties and state licenses
- Neurology, ArizonaPrimary
Neurologists near Dr. Merrill
Counts of neurologists 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 K. Merrill billed Medicare for 125 services in 2024
CMS data shows 125 Medicare services from Dr. Merrill across 4 procedure codes in 2024, for 86 Medicare patients. Medicare paid $12,201 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Merrill's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 622024: 10163%
- Tests and treatments
- 2023: 292024: 2417%
Dr. Merrill compared with the Arizona median for neurologists, 2024
- Dr. Merrill
- Arizona median
- Medicare services
- 125vs 51276% below
- Medicare patients
- 86vs 27268% below
Medians across 365 neurologists in Arizona with Dmand AI profiles that report each measure.
Dr. Merrill'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. Merrill?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Merrill and other neurologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel K. Merrill treated 86 Medicare patients in 2024, average age 75
CMS counts 86 Medicare patients who saw Dr. Merrill in 2024. The largest group is 75 to 84, with 33 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.11, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Merrill's median patient age at 40, with 34% women.
Dr. Merrill's Medicare patients by age, 2024
Dr. Merrill's Medicare patients by sex, 2024
- Women4148%
- Men4552%
Chronic conditions among Dr. Merrill's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders75%
- Anxiety74%
- Depression73%
- Bipolar disorder64%
- Alzheimer's and dementia57%
- Arthritis57%
Share of Medicare patients with each condition. A patient can have several.
Dr. Merrill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women34%
- Men63%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Daniel K. Merrill takes part in Medicare
Dr. Merrill 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. Daniel K. Merrill received $356 in industry payments from 2021 to 2025
CMS Open Payments shows 4 general payments to Dr. Merrill from 2 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Alkermes, Inc. paid the most, $231.
General payments to Dr. Merrill by program year, 2021 to 2025
Companies that paid Dr. Merrill the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Daniel K. Merrill'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) |
| 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 K. Merrill
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 K. Merrill's NPI number?
Dr. Daniel K. Merrill's NPI number is 1609895671. It was assigned on July 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel K. Merrill?
Dr. Daniel K. Merrill is a neurologist in Tucson, Arizona. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Daniel K. Merrill practice?
Dr. Merrill practices at 1601 West St Mary's Road, Tucson, AZ 85745. Dr. Merrill's primary practice is Carondelet St. Mary's Hospital in Tucson, Arizona, part of Tenet Healthcare. Dmand AI also links Dr. Merrill to 1 hospital, 2 therapy and rehab clinics, 2 medical groups and 1 physician office.
What is Dr. Daniel K. Merrill's office phone number?
The practice phone on file for Dr. Merrill is (520) 872-3000.
What is Dr. Daniel K. Merrill's medical license number?
Dr. Merrill holds Arizona license 32558.
Which hospitals is Dr. Daniel K. Merrill affiliated with?
Dr. Merrill practices at Carondelet St. Mary's Hospital in Tucson, Arizona. Dr. Merrill is also affiliated with Dignity Health Mercy Gilbert Medical Center. Dmand AI links Dr. Merrill to 1 more hospital.
What medical group is Dr. Daniel K. Merrill part of?
Dr. Merrill is linked to District Medical Group. Dmand AI links Dr. Merrill to 2 more medical groups.
Does Dr. Daniel K. Merrill accept Medicare?
Yes. CMS data shows Dr. Merrill billed Medicare for 125 services in 2024, and Dr. Merrill accepts Medicare assignment.
How many Medicare patients does Dr. Daniel K. Merrill see?
CMS counts 86 Medicare patients who saw Dr. Merrill in 2024, with an average age of 75.
What services does Dr. Daniel K. Merrill bill to Medicare?
In 2024, Dr. Merrill's most billed Medicare services were hospital inpatient care (99233), psychiatric service (90792) and hospital inpatient care (99223).
Has Dr. Daniel K. Merrill received payments from drug or device companies?
CMS Open Payments shows $356 in general payments to Dr. Merrill from 2 companies from 2021 to 2025. The largest total came from Alkermes, Inc.
How long has Dr. Daniel K. Merrill been practicing?
Dr. Merrill graduated from medical school in 2001, 25 years ago.
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