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MARK PETERSON D.O.
NPI 1295881274
Emergency Medicine in Flagstaff, AZ

Active since January 25, 2007PECOS Enrolled
1200 N BEAVER ST, FLAGSTAFF, AZ 86001(928) 380-0476(928) 214-3882 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mark Peterson D.o. NPPES

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

MARK PETERSON D.O. (NPI 1295881274) is an individual emergency medicine provider in Flagstaff, Arizona, licensed in Arizona (3006) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295881274
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameMARK PETERSONCredential: D.O.
Location Address1200 N BEAVER STFlagstaff, AZ 86001-3118
Mailing Address1050 N San Francisco St Ste DFlagstaff, AZ 86001-3259 · (928) 380-0476 · Fax (928) 214-3882
Phone(928) 380-0476
Fax(928) 214-3882
Sole ProprietorYes
Enumeration DateJanuary 25, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1295881274 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in AZ · 3006
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1200 N BEAVER ST, Flagstaff, AZ 86001
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Other Identifiers 1

Medicare UPINF52430AZ

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Peterson D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Mark Peterson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Winslow Indian Health Care Center, Inc
37 mi
Public Health, Federal
1.5 MILE N OF LEUPP CHAPTER HOUSE
Leupp, AZ 86035
  • Reassigned Medicare billing, Texas enrollment
  • 219 clinicians in this Medicare group
NPI 1760652580 (928) 289-4646

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
104 services103 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
52 services48 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
43 services43 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
17 services17 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
12 services12 patients

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
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
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.

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 Mark Peterson's NPI number?

The NPI number for Mark Peterson is 1295881274. It was assigned to this individual provider in the NPPES registry on January 25, 2007.

Where is Mark Peterson located?

Mark Peterson practices at 1200 N Beaver St, Flagstaff, AZ 86001. The listed phone number is (928) 380-0476.

What is Mark Peterson's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Mark Peterson enrolled in Medicare?

Yes. Mark Peterson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mark Peterson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Peterson reassigns Medicare benefits to Winslow Indian Health Care Center, Inc (Leupp, AZ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Peterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Peterson was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.