Mark Danforth Lacy, MD
Infectious Disease Physician · Prescott, AZ
Mark Danforth Lacy, MD is an infectious disease physician with a practice address in Prescott, Arizona, and NPI 1134177215, issued on May 4, 2006. Check the license (Arizona 15404, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Danforth Lacy
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- 15404 AZ
143343 MT
01598 NC
MD2020-0241 NM
45341 TX
and 1 more
Self-reported in NPPES; status is on the state search - Practice location
- 300 N Lee Blvd, Prescott, AZ 86301
- Phone
- (928) 708-4603
- Enumerated
- May 4, 2006
- Record last updated
- Aug 13, 2025
- Fax
- (928) 445-9209
- Medicare enrollment
- Enrolled (PECOS I20231026000419); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 176 in Arizona → Look up another NPI →
Also registered at 300 N Lee Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicolas Giuliano, DOInternal Medicine Physician1437686524
- Olamide Jarrett, M.D.Infectious Disease Physician1861682965
- Sharon Lee-Roeder, N.P.Family Nurse Practitioner1801101316
- Kelly Marshall, FNPFamily Nurse Practitioner1093283483
- Gerald Muncy, MDFamily Medicine Physician1376506246
- Doreen Slabaugh, D.O.Internal Medicine Physician1619964061
Verify Mark Danforth Lacy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 15404Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average infectious disease physician in 2024
196 Medicare Part D claims for 60 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium13 claims
- Losartan Potassium12 claims
- Atorvastatin Calcium11 claims
- Lisinopril11 claims
- Metformin Hcl11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Yavapai Regional Medical Center Physician Care LLCPrescott, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Danforth Lacy among 176 infectious disease physician records in Arizona
Mark Danforth Lacy, MD is one of 176 infectious disease physician records with a practice address in Arizona. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 57% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1983 · median 2001 among the 122 with a school on file
- Record last updated2025 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Arizona
There are 176 infectious disease physician records in Arizona.
All 176 in Arizona → Every provider in Prescott → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Olamide Jarrett, M.D.Prescott, AZ 863011861682965
- William Lockwood, MDPrescott, AZ 863011861478299
- Brenda Patton, MDPrescott, AZ 863011871580522
- Mary Ellen Lawrence, M.D.Prescott, AZ 863051922117738
- Margaret Kobe, M.D.Cottonwood, AZ 863261952332470
- Anayochukwu Uche, M.D.Bullhead City, AZ 864421013085091
- Alithea Gabrellas, MDFort Defiance, AZ 865041568780641
- Janelle Rhyne, MDKayenta, AZ 860331235231416
Common questions
What is Mark Danforth Lacy, MD's NPI number?
Mark Danforth Lacy, MD's National Provider Identifier (NPI) is 1134177215, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Danforth Lacy, MD located?
The NPPES record lists a practice address at 300 N Lee Blvd, Prescott, AZ, 86301. Phone: (928) 708-4603. Providers update this record themselves, so call before visiting.
How can I verify Mark Danforth Lacy, MD's license?
NPPES lists Arizona license number 15404, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Danforth Lacy, MD prescribe under Medicare Part D?
In 2024, Mark Danforth Lacy, MD had 196 Medicare Part D claims for 60 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.