DR. PETER ZACK (DO) – Emergency Medicine Physician, NPI 1255781852

DR. PETER ZACK (DO) is a healthcare provider. based in Kalamazoo, Michigan. specializing in EMERGENCY MEDICINE. They hold the professional credentials DO. They hold a License No. 5101022696 (MI). The NPI Number for DR. PETER ZACK (DO) is 1255781852

Main info

Male
10 Years Of Experience
Accepts Medicare Assignment
Name
DR. PETER ZACK (DO)
NPI
1255781852
Phone
(269) 337-6019
Address
1000 OAKLAND DR
Enumeration Date
15 June 2016
Last Update Date
8 January 2020

Doctor Profile

Medical School Name
WEST VIRGINIA SCHOOL OF OSTEOPATHIC MEDICINE
Secondary Phone
2198798511
Graduation Year
2016 (10 years ago)
PAC ID
0648567966
Group Practice PAC ID
6507277423
Professional Enrollment ID
I20190812000203
Address ID
IN463600021MI3500XWAYX303
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience51
Completeness75
Years active:9State licenses:2Digital endpointsOther names

3,158 EMERGENCY MEDICINE in MI

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Provider Addresses for DR. PETER ZACK (DO)

  • 1000, Oakland Drive, Kalamazoo, Kalamazoo County, Michigan, 49008, United States

    KALAMAZOO, MI 490081282

    Phone: (269) 337-6019

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 1 Open Payments records for all available years, with a total value of $23.

Total Amount is formed as General ($23) + Research ($0) + Ownership ($0) = $23.

Last reported payment date: 2024-05-06 • Largest payer in this snapshot: Integra LifeSciences Corporation ($23).

Total Amount

$23

General + Research + Ownership

Payments

1

Total payment records

General Amount

$23

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-05-06

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2019-08-12

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20190812000203IEmergency MedicineINTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99285Emergency department visit with high level of medical decision making174173$0
99284Emergency department visit with moderate level of medical decision making130126$0
99291Critical care, first 30-74 minutes3736$0
99283Emergency department visit with low level of medical decision making2424$0
93010Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only1412$0
View full utilization report →

Insurance plans in this area (ZIP 49008)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 6507277423View full group profile
NameSpecialtyState
Emergency MedicineNY
Emergency MedicineIN
Emergency MedicineWA
Emergency MedicineMO
Emergency MedicineMI
Emergency MedicineIN
Emergency MedicineOH
Emergency MedicineWI
Family Practice, Emergency MedicineKY
Emergency MedicineFL

Reviews

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Frequently asked questions

Does DR. PETER ZACK (DO) share an NPI with anyone else?
NPI numbers are unique to each provider or organization — DR. PETER ZACK (DO) uses 1255781852.
Does CMS list DR. PETER ZACK (DO) as active?
Yes — DR. PETER ZACK (DO) is active in the NPI listing used on this page.
What is DR. PETER ZACK (DO) best known for clinically?
Directory data describes DR. PETER ZACK (DO) with Emergency Medicine Physician. Clinical services aligned with this taxonomy classification.
Where is DR. PETER ZACK (DO) based?
DR. PETER ZACK (DO) is tied to Kalamazoo, Michigan in the data we show; additional addresses may exist on the full record.
What does 'Individual Provider' mean on this profile?
Entity type tells you whether the number belongs to a person or an organization.

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