Marian Lacy, M.D.
Infectious Disease Physician · Flagstaff, AZ
Marian Lacy, M.D. is an infectious disease physician with a practice address in Flagstaff, Arizona, and NPI 1780987073, issued on Dec 8, 2010. Check the license (Arizona 52413, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marian Lacy
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 52413 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1200 N Beaver St, Flagstaff, AZ 86001
- Phone
- (928) 213-6235
- Enumerated
- Dec 8, 2010
- Record last updated
- Nov 4, 2025
- Fax
- (928) 213-6292
- Medicaid ID
- 173257 AZ
- Medicare enrollment
- Enrolled (PECOS I20160822002681); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 176 in Arizona → Look up another NPI →
Also registered at 1200 N Beaver St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Acquaviva, CRNACertified Registered Nurse Anesthetist1639238348
- Michelle Aerni, D.O.Critical Care Medicine (Anesthesiology) Physician1225014822
- Amit Agrawal, M.D.Neonatal-Perinatal Medicine Physician1306032701
- Muhammad Ali, MDCritical Care Medicine (Internal Medicine) Physician1801264353
- Kim AllenSpeech-Language Pathologist1356580484
- Bianca Anderson, MS, RDRegistered Dietitian1548609431
Verify Marian Lacy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 52413Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average infectious disease physician in 2024
52 Medicare Part D claims for 19 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 77 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Northern Arizona Healthcare CorporationFlagstaff, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marian Lacy among 176 infectious disease physician records in Arizona
Marian Lacy, M.D. 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 2010, is newer than 64% of them.
- NPI issued2010 · 64% of these records are older, 30% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2012 · 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 Flagstaff → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- David Keckich, M.D.Flagstaff, AZ 860011356370571
- Manogjna Prasad, MDFlagstaff, AZ 860011255934014
- Muhammad Shaikh, M.D.Flagstaff, AZ 860011659474203
- Dithi Shetty, MDFlagstaff, AZ 860011427037357
- Joel Terriquez, M.D.Flagstaff, AZ 860011891008884
- Patrick Vickers, D.OFlagstaff, AZ 860011740544923
- Janelle Rhyne, MDKayenta, AZ 860331235231416
- Logan Paolo Felix, M.D.Tucson, AZ 857481194038505
Common questions
What is Marian Lacy, M.D.'s NPI number?
Marian Lacy, M.D.'s National Provider Identifier (NPI) is 1780987073, issued on Dec 8, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Marian Lacy, M.D. located?
The NPPES record lists a practice address at 1200 N Beaver St, Flagstaff, AZ, 86001. Phone: (928) 213-6235. Providers update this record themselves, so call before visiting.
How can I verify Marian Lacy, M.D.'s license?
NPPES lists Arizona license number 52413, 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 Marian Lacy, M.D. prescribe under Medicare Part D?
In 2024, Marian Lacy, M.D. had 52 Medicare Part D claims for 19 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Marian Lacy, M.D.'s MIPS final score?
The 2023 MIPS final score is 77 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.