Doctor profile · Federal record
Dr. Mark Lacy, MD
Infectious Disease Physician (CMS: Infectious Disease) · Internal Medicine Physician · Infectious Disease Physician · Infectious Disease Physician · Infectious Disease Physician · Infectious Disease Physician · Pediatrics Physician · Hospitalist Physician · Hospitalist Physician · Prescott, AZ
- NPI 1134177215
- Accepts Medicare
- 43 yrs in practice
- Licensed in 5 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
300 N Lee Blvd
Prescott, AZ 863015710
(928) 708-4603
fax (928) 445-9209 - Additional location
-
210 Sunnyview Ln Ste 105
Kalispell, MT 599013128
(406) 756-4727
fax (406) 751-5350 - Additional location
-
430 Windward Way Ste 100
Kalispell, MT 599012619
(406) 751-5364
fax (406) 751-5367 - Additional location
-
Dept Internal Medicine 1 University Nm MSC 10-5550
Albuquerque, NM 871310001
(505) 272-1670
fax (505) 272-4435 - Mailing address
-
Po Box 10880
Prescott, AZ 863040880
Show 1 more location
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- August 13, 2025
- Year of graduation
- 1983 — 43 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State licenses (6)
- Arizona #15404 · Texas #45341 · Montana #143343 · North Carolina #01598 · New Mexico #MD2020-0241 · Texas #Q8279
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134177215. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
25
Distinct HCPCS
2
Medicare allowed
$3,645
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 14 | 14 | $124 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 11 | 11 | $174 |
In context: peer comparison
Among 2 peers in Prescott Infectious Disease Physician, average services per provider: 49. This provider delivers 0.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
12
Patients
0
Total drug cost
$250
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amoxicillin | Generic | 12 | 0 | $250 |
Frequently asked questions
What is Dr. Mark Lacy's medical specialty?
Dr. Mark Lacy practices Infectious Disease Physician in Prescott, AZ.
Where does Dr. Mark Lacy practice?
Dr. Mark Lacy practices at 300 N Lee Blvd, Prescott, AZ 863015710. Office phone: 9287084603.
What is Dr. Mark Lacy's NPI?
Dr. Mark Lacy's National Provider Identifier (NPI) is 1134177215, issued by NPPES.
Does Dr. Mark Lacy accept Medicare assignment?
Yes. Dr. Mark Lacy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Lacy commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.