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MARC ROY ZOSKY
NPI 1851734982
Emergency Medicine in Mesa, AZ

Active since April 08, 2013PECOS EnrolledAccepts Medicare Assignment
6644 E BAYWOOD AVE, MESA, AZ 85206(650) 279-6421 Get Directions Write a Review

NPPES record last updated: December 22, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 22, 2016, Aug 10, 2016 (2 updates tracked since 2016).

About Marc Roy Zosky NPPES

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

MARC ROY ZOSKY (NPI 1851734982) is an individual emergency medicine provider in Mesa, Arizona, licensed in Arizona (AZ006944) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS and is a graduate of Lake Erie College Of Osteopathic Medicine, Erie (2013).

NPPES Registry Identity

NPI1851734982
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameMARC ROY ZOSKY
Location Address6644 E BAYWOOD AVEMesa, AZ 85206-1747
Mailing Address6644 E Baywood AveMesa, AZ 85206-1747 · (650) 279-6421
Phone(650) 279-6421
Sole ProprietorNo
Medical School CMSLake Erie College Of Osteopathic Medicine, ErieGraduated 2013
Enumeration DateApril 8, 2013
Last NPPES UpdateDecember 22, 20162 updates tracked since enumeration
✔ NPI 1851734982 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 · AZ006944
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.
6644 E BAYWOOD AVE, Mesa, AZ 85206
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Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marc Roy Zosky 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 ID5799088183
PECOS Enrollment IDI20160623002387
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 Reassignments

7

Medicare enrollment records show Marc Zosky reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Emergency Physicians Southwest, PC
0.1 mi
Emergency Medicine
6644 E BAYWOOD AVE
Mesa, AZ 85206
  • Reassigned Medicare billing, Arizona enrollment
  • 289 clinicians in this Medicare group
NPI 1912053752 (480) 321-2000
Usacs Emergency Medicine Of Arizona, LLC
4.6 mi
Emergency Medicine
1301 S CRISMON RD
Mesa, AZ 85209
  • Reassigned Medicare billing, Arizona enrollment
  • 79 clinicians in this Medicare group
NPI 1770392490 (844) 474-4019
Chandler Emergency Medical Group, LLC
13 mi
Emergency Medicine
1955 W FRYE RD
Chandler, AZ 85224
  • Reassigned Medicare billing, Arizona enrollment
  • 101 clinicians in this Medicare group
NPI 1104871961 (954) 939-5000
Arizona Acute Medical Services 1 PC
21 mi
Hospitalist
1930 E THOMAS RD
Phoenix, AZ 85016
  • Reassigned Medicare billing, Arizona enrollment
  • 302 clinicians in this Medicare group
NPI 1154860674 (602) 532-1000
Emergency Group Of Arizona Professional Corporation
25 mi
Emergency Medicine
2000 W BETHANY HOME RD
Phoenix, AZ 85015
  • Reassigned Medicare billing, Arizona enrollment
  • 260 clinicians in this Medicare group
NPI 1215275433 (925) 924-1600
Usacs Of Colorado Inc
342 mi
Emergency Medicine
1010 THREE SPRINGS BLVD
Durango, CO 81301
  • Reassigned Medicare billing, Arizona enrollment
  • 57 clinicians in this Medicare group
NPI 1235765074 (330) 493-4443
Quantum Healthcare Medical Associates Of Arizona, PC
646 mi
Emergency Medicine
5000 HOPYARD RD, SUITE 100
Pleasanton, CA 94588
  • Reassigned Medicare billing, Arizona enrollment
  • 97 clinicians in this Medicare group
NPI 1821391269 (925) 924-1600

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 4

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.
304 services302 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.
139 services130 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.
97 services97 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.
64 services64 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85206 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.

MRS. KARLA TRUJILLO BSN, RN
Registered Nurse (Continuing Education/Staff Development)
6644 E BAYWOOD AVE
MESA, AZ 85206
Maricopa County (480) 321-4731
ALLIED INTERNAL MEDICINE PLLC
General Acute Care Hospital
6644 E BAYWOOD AVE
MESA, AZ 85206
Maricopa County (602) 694-0548
DR. MIKULKUMAR D SHAH MD
Anesthesiology
6644 E BAYWOOD AVE
MESA, AZ 85206
Maricopa County (480) 321-2000
ANDREW MARTIN HEMMEN MD
Internal Medicine
6644 E BAYWOOD AVE
MESA, AZ 85206
Maricopa County (480) 981-4391
DR. IZABELA B POSTACCHINI MD
Hospitalist
6644 E BAYWOOD AVE, BANNER BAYWOOD MEDICAL CENTER
MESA, AZ 85206
Maricopa County (480) 321-3900
JOSHUA TODD AUSTIN CRNA
Nurse Anesthetist, Certified Registered
6644 E BAYWOOD AVE
MESA, AZ 85206
Maricopa County (480) 321-2000
EMERGENCY & ACUTE CARE MEDICAL COMPANY - AZ
Emergency Medicine
6644 E BAYWOOD AVE
MESA, AZ 85206
Maricopa County (480) 981-2000
DR. ERIC PITTMAN MD
Hospitalist
6644 E BAYWOOD AVE, BANNER BAYWOOD MEDICAL CENTER
MESA, AZ 85206
Maricopa County (480) 321-3900

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 Marc Zosky's NPI number?

The NPI number for Marc Zosky is 1851734982. It was assigned to this individual provider in the NPPES registry on April 8, 2013.

Where is Marc Zosky located?

Marc Zosky practices at 6644 E Baywood Ave, Mesa, AZ 85206. The listed phone number is (650) 279-6421.

What is Marc Zosky's specialty?

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

Is Marc Zosky enrolled in Medicare?

Yes. Marc Zosky 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.

Which organizations bill Medicare for Marc Zosky's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marc Zosky reassigns Medicare benefits to 7 organizations: Emergency Physicians Southwest, PC (Mesa, AZ), Usacs Emergency Medicine Of Arizona, LLC (Mesa, AZ), Chandler Emergency Medical Group, LLC (Chandler, AZ), Arizona Acute Medical Services 1 PC (Phoenix, AZ), Emergency Group Of Arizona Professional Corporation (Phoenix, AZ) and 2 more organizations, listed in the Medicare section above. Each 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 Marc Zosky's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marc Zosky accept?

Health plans from Oscar Health Plan, Inc. list Marc Zosky 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 Marc Zosky was last updated on December 22, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.