Dr Mark Danforth Lacy, MD - Medicare in Prescott, AZ

Dr Mark Danforth Lacy, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Prescott, Arizona. His current practice location is 300 N Lee Blvd, Prescott, Arizona. You can reach out to his office (for appointments etc.) via phone at (928) 708-4603.

Dr Mark Danforth Lacy is licensed to practice in Arizona (license number 15404) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1134177215.

Contact Information

Dr Mark Danforth Lacy, MD
300 N Lee Blvd,
Prescott, AZ 86301-5710
(928) 708-4603
(928) 445-9209

Map and Direction




Physician's Profile

Full NameDr Mark Danforth Lacy
GenderMale
Speciality
Experience Years
Location300 N Lee Blvd, Prescott, Arizona
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Mark Danforth Lacy attended and graduated from in
  NPI Data:
  • NPI Number: 1134177215
  • Provider Enumeration Date: 05/04/2006
  • Last Update Date: 08/13/2025
  Medicare PECOS Information:
  • PECOS PAC ID:
  • Enrollment ID:

Medical Identifiers

Medical identifiers for Dr Mark Danforth Lacy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1134177215NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 45341 (Texas)Secondary
207RI0200XInternal Medicine - Infectious Disease 143343 (Montana)Secondary
207RI0200XInternal Medicine - Infectious Disease 45341 (Texas)Secondary
207RI0200XInternal Medicine - Infectious Disease 01598 (North Carolina)Secondary
207RI0200XInternal Medicine - Infectious Disease MD2020-0241 (New Mexico)Secondary
208000000XPediatrics MD2020-0241 (New Mexico)Secondary
208M00000XHospitalist Q8279 (Texas)Secondary
208M00000XHospitalist MD2020-0241 (New Mexico)Secondary
207RI0200XInternal Medicine - Infectious Disease 15404 (Arizona)Primary

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Mark Danforth Lacy is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Mark Danforth Lacy, MD
Po Box 10880,
Prescott, AZ 86304-0880

Ph: (602) 406-4786
Dr Mark Danforth Lacy, MD
300 N Lee Blvd,
Prescott, AZ 86301-5710

Ph: (928) 708-4603

Reviews and Comments


Internal Medicine Doctors in Prescott, AZ

Christopher H Murphy, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1003 Willow Creek Rd, Prescott, AZ 86301
Phone: 928-773-0003    Fax: 928-773-1170
Dr. Jyotsana M Patel, M.D.
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 500 N Hwy 89, Northern Arizona Va Hcs, Prescott, AZ 86313
Phone: 928-445-4860    
Dr. Warren Reyes Ho, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3122 Willow Creek Rd, Prescott, AZ 86301
Phone: 928-445-7632    Fax: 928-445-9283
Karen L Yates, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3101 Clearwater Dr, Suite C, Prescott, AZ 86305
Phone: 928-771-0555    Fax: 928-771-0444
Dr. Milton Murray Schild, M.D.
Infectious Disease
Medicare: Not Enrolled in Medicare
Practice Location: 811 Ainsworth Dr, Suite 103, Prescott, AZ 86301
Phone: 928-771-5548    Fax: 928-771-5549
Dr. Ayyasamy P Selvam, MD
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 500 N Us Highway 89, Va Medical Center, Prescott, AZ 86313
Phone: 928-776-6009    Fax: 928-776-6098
Dr. Kevin S Doyle, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1001 Division St, Prescott, AZ 86301
Phone: 928-775-5567    Fax: 928-772-1522

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.