Dr. Mark Danforth Lacy, MD
- Medicare services, 2024
- 16
- Medicare patients, 2024
- 29
- Part D claims, 2024
- 196
- Hospital affiliations
- 1
- Industry payments
- $7,201
- Practice address
- 1003 Willow Creek Road, Prescott, AZ 86301
- Practice phone
- Call (928) 445-2700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Lacy'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. Mark Danforth Lacy is an infectious disease specialist in Prescott, Arizona
Dr. Lacy practices at Dignity Health, Yavapai Regional Medical Center West in Prescott, Arizona, part of CommonSpirit Health.
Dr. Lacy's NPI, 1134177215, was assigned on May 4, 2006. Dr. Lacy holds New Mexico license MD2020-0241.
- NPI
- 1134177215NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638181910
- NPI enumeration date
- May 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (928) 445-2700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Danforth Lacy practices at Dignity Health, Yavapai Regional Medical Center West in Prescott, Arizona
Dr. Lacy's primary practice is Dignity Health, Yavapai Regional Medical Center West, at 1003 Willow Creek Road, Prescott, AZ 86301 in Yavapai County. The practice phone is (928) 445-2700.
- Dignity Health, Yavapai Regional Medical Center West1003 Willow Creek Road, Prescott, AZ 86301 · Yavapai CountyPhone(928) 445-2700
Source: Dmand AI Affiliation Data
Dr. Mark Danforth Lacy is affiliated with 4 sites of care and 7 medical groups
Dr. Lacy's primary practice is Dignity Health, Yavapai Regional Medical Center West in Prescott, Arizona, part of CommonSpirit Health. The medical group on file is Dignity Health Yavapai Regional Medical Group. Dmand AI also links Dr. Lacy to 6 more medical groups, 2 group practices and clinics and 1 home health agency, 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. Mark Danforth Lacy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lacy practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health, Yavapai Regional Medical Center West | Available with a free account |
| +3 more sites and 6 medical groups | 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 CommonSpirit Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark Danforth Lacy is one of 154 infectious disease specialists in Arizona
Infectious disease is Dr. Lacy's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dmand AI has Dr. Lacy's licenses on file in 5 states: New Mexico, Arizona, Montana, North Carolina and Texas.
Specialties and state licenses
- Infectious disease, New MexicoPrimary
- Arizona license
- Montana license
- North Carolina license
- Internal medicine, Texas
Infectious disease specialists near Dr. Lacy
Counts of infectious disease specialists 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. Mark Danforth Lacy billed Medicare for 16 services in 2024
CMS data shows 16 Medicare services from Dr. Lacy across 1 procedure code in 2024, for 29 Medicare patients. Medicare paid $1,685 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lacy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 252024: 1636%
Dr. Lacy compared with the Arizona median for infectious disease specialists, 2024
- Dr. Lacy
- Arizona median
- Medicare services
- 16vs 53497% below
- Medicare patients
- 29vs 19885% below
- Part D claims
- 58vs 19370% below
Medians across 141 infectious disease specialists in Arizona with Dmand AI profiles that report each measure.
Dr. Lacy'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. Lacy and other infectious disease specialists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Danforth Lacy treated 29 Medicare patients in 2024, average age 73
CMS counts 29 Medicare patients who saw Dr. Lacy in 2024. The largest group is 65 to 74, with 12 patients. 62% of them have arthritis, and 62% have high blood pressure. Their average risk score is 1.59, 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. Lacy's median patient age at 73, with 41% women.
Dr. Lacy's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lacy's Medicare patients by sex, 2024
- Women1552%
- Men1448%
Chronic conditions among Dr. Lacy's Medicare patients, 2024
- Arthritis62%
- High blood pressure62%
- High cholesterol62%
- Diabetes45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lacy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women41%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Danforth Lacy wrote 196 Medicare Part D claims in 2024
In 2024, Dr. Lacy wrote 196 Medicare Part D claims for 60 patients. 90% of them were for generic drugs. CMS names the drug for 58 of them, across 5 drugs with 11 or more claims each, at $475 in total drug cost. In 2023, CMS named 12 claims across 1 drug.
Dr. Lacy's Part D claims by kind of drug, 2024
- Generic176 claims90%
- Brand-name and other20 claims10%
Dr. Lacy'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. Lacy's Part D claims, 2024
- Antibiotics8%16 of 196 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: 122024: 58383%
Drugs named by CMS: 5 in 2024, 1 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. Mark Danforth Lacy takes part in Medicare
Dr. Lacy 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. Mark Danforth Lacy received $7,201 in industry payments from 2016 to 2023
CMS Open Payments shows 296 general payments to Dr. Lacy from 18 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 83% of the total. Astellas Pharma US Inc paid the most, $1,779.
General payments to Dr. Lacy by program year, 2016 to 2023
General payments to Dr. Lacy by kind, 2016 to 2023
- Food and beverage$5,98883%
- Education$1,10415%
- Consulting fees$1001%
- Gifts$90%
Companies that paid Dr. Lacy the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark Danforth Lacy'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. Mark Danforth Lacy
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. Mark Danforth Lacy's NPI number?
Dr. Mark Danforth Lacy's NPI number is 1134177215. It was assigned on May 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Danforth Lacy?
Dr. Mark Danforth Lacy is an infectious disease specialist in Prescott, Arizona. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Mark Danforth Lacy practice?
Dr. Lacy practices at 1003 Willow Creek Road, Prescott, AZ 86301. Dr. Lacy's primary practice is Dignity Health, Yavapai Regional Medical Center West in Prescott, Arizona, part of CommonSpirit Health. Dmand AI also links Dr. Lacy to 6 medical groups, 2 group practices and clinics and 1 home health agency.
What is Dr. Mark Danforth Lacy's office phone number?
The practice phone on file for Dr. Lacy is (928) 445-2700.
What is Dr. Mark Danforth Lacy's medical license number?
Dr. Lacy holds New Mexico license MD2020-0241, one of the licenses on file in 5 states.
Which states has Dr. Mark Danforth Lacy been licensed in?
Dmand AI has state licenses on file for Dr. Lacy in New Mexico, Arizona, Montana, North Carolina and Texas.
Which hospitals is Dr. Mark Danforth Lacy affiliated with?
Dr. Lacy practices at Dignity Health, Yavapai Regional Medical Center West in Prescott, Arizona.
What medical group is Dr. Mark Danforth Lacy part of?
Dr. Lacy is linked to Dignity Health Yavapai Regional Medical Group. Dmand AI links Dr. Lacy to 6 more medical groups.
Does Dr. Mark Danforth Lacy accept Medicare?
Yes. CMS data shows Dr. Lacy billed Medicare for 16 services in 2024, and Dr. Lacy accepts Medicare assignment.
How many Medicare patients does Dr. Mark Danforth Lacy see?
CMS counts 29 Medicare patients who saw Dr. Lacy in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Mark Danforth Lacy bill to Medicare?
In 2024, Dr. Lacy's most billed Medicare services were hospital inpatient care (99222).
What drugs does Dr. Mark Danforth Lacy prescribe most?
In 2024 Medicare Part D data, Dr. Lacy's most prescribed drugs by claims were Levothyroxine Sodium, Losartan Potassium and Atorvastatin Calcium.
Has Dr. Mark Danforth Lacy received payments from drug or device companies?
CMS Open Payments shows $7,201 in general payments to Dr. Lacy from 18 companies from 2016 to 2023. The largest total came from Astellas Pharma US Inc.
How long has Dr. Mark Danforth Lacy been practicing?
Dr. Lacy graduated from medical school in 1983, 43 years ago.
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