DR. MARIAN LACY M.D.
NPI 1780987073
Internal Medicine - Infectious Disease in Flagstaff, AZ

Q: What is Marian Lacy's NPI number?

The NPI number for Marian Lacy is 1780987073. It was assigned to this individual provider in the NPPES registry on December 8, 2010.

Q: What is Marian Lacy's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for Marian Lacy was last updated on November 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since December 08, 2010PECOS EnrolledAccepts Medicare Assignment

77.01/100

CMS Quality Rating

1200 N BEAVER ST, FLAGSTAFF, AZ 86001(928) 213-6235(928) 213-6292 Get Directions Write a Review

NPPES record last updated: November 4, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 4, 2025, Mar 14, 2017, Sep 15, 2016 and 1 more (4 updates tracked since 2016).

On this page

About Dr. Marian Lacy M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARIAN LACY M.D. (NPI 1780987073) is an individual infectious disease provider in Flagstaff, Arizona, licensed in Arizona (52413) and active in the NPI registry since December 2010. She is enrolled in Medicare PECOS and is a graduate of Johns Hopkins University School Of Medicine (2012).

NPPES Registry Identity

NPI1780987073

Entity TypeIndividualFemale

Primary Taxonomy207RI0200X

Provider Legal NameDR. MARIAN LACYCredential: M.D.

Location Address1200 N BEAVER STFlagstaff, AZ 86001-3118

Mailing Address1200 N Beaver StFlagstaff, AZ 86001-3118 · (928) 213-6235 · Fax (928) 213-6292

Phone(928) 213-6235

Fax(928) 213-6292

Sole ProprietorNo

Medical School CMSJohns Hopkins University School Of MedicineGraduated 2012

Enumeration DateDecember 8, 2010

Last NPPES UpdateNovember 4, 20254 updates tracked since enumeration

NPPES CertifiedNovember 4, 2025

✔ NPI 1780987073 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in AZ · 52413

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

1200 N BEAVER ST, Flagstaff, AZ 86001

Open in Google Maps ↗

Other Identifiers 1

Medicaid173257AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona, Oscar Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Marian Lacy M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5799088340

PECOS Enrollment IDI20160822002681

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 86001 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$127.71 typical visit price

range $55.44 – $168.60

Typical copayment $31.92 (range $13.86 – $42.15)

Most-billed visit code 99204

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

77.01/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

59.66

Promoting Interoperability

100

Improvement Activities

Cost

63.71

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JEREMY NIELSEN M.D.

Anesthesiology

1200 N BEAVER ST
FLAGSTAFF, AZ 86001

Coconino County (928) 779-3366

DR. SEAN DANIEL WOODS M.D.

Pediatrics (Neonatal-Perinatal Medicine)

1200 N BEAVER ST
FLAGSTAFF, AZ 86001

Coconino County (928) 773-2112

ELIZABETH GILMORE CRNA

Nurse Anesthetist, Certified Registered

1200 N BEAVER ST
FLAGSTAFF, AZ 86001

Coconino County (928) 779-3366

TANYA LEE MORGAN TWEED RDN

Dietitian, Registered

1200 N BEAVER ST
FLAGSTAFF, AZ 86001

Coconino County (928) 773-2441

THOMAS MATTHEW REEVE MD

Emergency Medicine

1200 N BEAVER ST
FLAGSTAFF, AZ 86001

Coconino County (210) 464-7442

MS. SUSAN POMEROY BASSETT M.S.

Audiologist

1200 N BEAVER ST, AUDIOLOGY DEPARTMENT
FLAGSTAFF, AZ 86001

Coconino County (928) 214-3728

DR. ALI I RAJA MD, MSC

Neurological Surgery

1200 N BEAVER ST
FLAGSTAFF, AZ 86001

Coconino County (928) 779-3366

LEAH MARIE COFFMAN PAUL CRNA

Nurse Anesthetist, Certified Registered

1200 N BEAVER ST
FLAGSTAFF, AZ 86001

Coconino County (928) 779-3366

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marian Lacy's NPI number?

The NPI number for Marian Lacy is 1780987073. It was assigned to this individual provider in the NPPES registry on December 8, 2010.

Where is Marian Lacy located?

Marian Lacy practices at 1200 N Beaver St, Flagstaff, AZ 86001. The listed phone number is (928) 213-6235.

What is Marian Lacy's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Marian Lacy enrolled in Medicare?

Yes. Marian Lacy is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Marian Lacy accept?

Health plans from Blue Cross Blue Shield of Arizona and Oscar Health Plan, Inc. list Marian Lacy as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Marian Lacy was last updated on November 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.