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Edit this profileWhere to find Mark D. Lacy, MD
- Prescott location main office
300 N Lee Blvd, Prescott, AZ 86301 - Albuquerque location
Dept Internal Medicine 1 University Nm Msc 10-5550, Albuquerque, NM 87131 - Kalispell location
210 Sunnyview Ln Ste 105, Kalispell, MT 59901 - Kalispell location
430 Windward Way Ste 100, Kalispell, MT 59901
About Dr. Lacy
Mark D. Lacy, MD is a healthcare provider in Prescott, AZ specializing in infectious disease. Mark is also listed as specializing in internal medicine. According to Medicare claims data, the services billed most often include initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes. This provider record is associated with NPI 1134177215.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (928) 708-4603
- Email not available
Practice Locations
300 N LEE BLVD
Prescott, AZ 86301
Dept Internal Medicine 1 University Nm Msc 10-5550
Albuquerque, NM 87131
210 Sunnyview Ln Ste 105
Kalispell, MT 59901
430 Windward Way Ste 100
Kalispell, MT 59901
Conditions Commonly Evaluated or Treated
Within Infectious Disease generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Post-infection conditions
Most searched conditions
- Hepatitis C
- HIV
- Long COVID
- Lyme disease
- Recurrent MRSA
- Travel medicine
Bacterial infections
- C. diff Infection
- Cat Scratch Fever
- Drug-Resistant Bacterial Infection
- Flesh-Eating Infection
- NTM lung infection
- Recurrent bacterial vaginosis
- Tick-Borne Infection
- Tuberculosis
Bones & joints
Cardiovascular
- Central Line Infection
- Infective endocarditis
- Pacemaker Infection
Digestive infections
- Salmonella food poisoning
Fungal infections
- Aspergillosis mold infection
- Chronic Yeast Infection
- Cryptococcal fungal infection
- Fungal lung infection
- Fungal sinus infection
- Valley fever
General symptoms
- Frequent Infections
- High fever
- Sepsis Recovery
Neurological infections
Parasitic infections
- Malaria
- Parasite Infection
- Toxoplasmosis
Respiratory infections
Sexually transmitted infections
Skin & soft tissue
- Cellulitis
- Diabetic Foot Infection
- Dog or Animal Bite Infection
- Non-Healing Wound Infection
- Post-surgery fever or infection
- Skin and soft-tissue abscess
Travel-related infections
- Dengue fever
- Typhoid fever
- Zika virus
Urinary tract
Viral infections
- Chronic Epstein-Barr virus reactivation
- Cytomegalovirus
- Hepatitis B
- Mononucleosis
- Mpox
- Shingles
- West Nile virus
Procedures & services
Most searched procedures
- IV antibiotic management
- PrEP prescription
- Travel vaccines
Allergy & immunology
- Penicillin Allergy Testing
Allergy & Pharmacology
- Antibiotic allergy desensitization
Antiviral treatments
- Antiviral medication management
- Hepatitis C antiviral treatment
- Mpox antiviral treatment
Consultation & second opinions
- Diabetic Foot Ulcer Debridement Consultation
- Infection Screening Before Biologics
- Post-Travel Illness Workup
- Pre-Chemotherapy Infection Clearance
- Pre-Transplant Infection Screening
- Prosthetic Hardware Infection Evaluation
- Second Opinion on Antibiotic Treatment
Diagnostic evaluations
- Chronic viral fatigue evaluation
- Medical parasite clearance evaluation
- Post-sepsis syndrome evaluation
- Sinus infection culture evaluation
- Unexplained fever workup
Diagnostics & screening
- Blood Culture Workup
- Fungal Blood Testing
- Immune System Workup for Frequent Infections
- Joint injection or aspiration
- Spinal Tap Infection Analysis
- Stool Parasite Testing
- TB Skin Test
- Tuberculosis Blood Test
- Wound Culture and Sensitivity
Gastrointestinal treatments
Infusions & Medications
- IV Antibiotic Home Monitoring
- Long-term suppressive antibiotic therapy
Lab testing & monitoring
- Comprehensive STI screening panel
- HIV viral load monitoring
- Infectious diarrhea stool pathogen PCR panel
- Mold and environmental fungal testing
- Specialized Lyme disease confirmation testing
- Tropical disease blood work
Medication management
- Atypical Mycobacteria Treatment Plan
- Chronic Hepatitis B Medication Management
- Infected Central Line Removal Coordination
- Malaria Treatment
- Oral Antibiotic Step-Down Therapy
- Recurrent Shingles Suppression
- Syphilis Injections
- Systemic Antifungal Therapy
Prevention & Prophylaxis
- Doxy-PEP prescription
Prevention & prophylaxis
- Emergency HIV Prevention (PEP)
- Needlestick Injury Evaluation
- Rabies Post-Exposure Shots
- Tick Bite Evaluation
Travel medicine
- International travel health consultation
- Yellow fever vaccine consultation
Procedures Most Often Billed to Medicare
16 services · 16 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
16 | Less often than most peers in Infectious Disease |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other infectious disease specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other infectious disease specialists in Prescott 3
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1983 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Lacy?
Dr. Lacy is an infectious disease specialist in Prescott, AZ. That is the designation recorded for this NPI in the federal registry, where it is listed as “Infectious Disease”.
NPI registry
What is Dr. Lacy's address?
Dr. Lacy is listed at 300 N Lee Blvd, Prescott, AZ 86301. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Lacy?
The number on file is (928) 708-4603. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Lacy?
Dr. Lacy's National Provider Identifier is 1134177215. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Lacy train?
Dr. Lacy attended Other, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Lacy have?
Dr. Lacy has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Lacy perform?
According to Medicare billing data, Dr. Lacy the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Lacy's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lacy. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.