DR. BRETT JUSTIN GERSTNER (D.O.) – Emergency Medicine Physician, NPI 1013356021

DR. BRETT JUSTIN GERSTNER (D.O.) is a healthcare provider. based in Lansing, Michigan. specializing in EMERGENCY MEDICINE. They hold the professional credentials D.O.. They hold a License No. 5101020313 (MI). The NPI Number for DR. BRETT JUSTIN GERSTNER (D.O.) is 1013356021

Main info

Male
13 Years Of Experience
Accepts Medicare Assignment
Name
DR. BRETT JUSTIN GERSTNER (D.O.)
NPI
1013356021
Phone
(517) 364-1000
Address
1215 E MICHIGAN AVE
Enumeration Date
24 June 2013
Last Update Date
24 June 2013

Doctor Profile

Medical School Name
MICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Secondary Phone
5173641000
Graduation Year
2013 (13 years ago)
PAC ID
4688943905
Group Practice PAC ID
8022414010
Professional Enrollment ID
I20170629002912
Address ID
MI489121811LA1215XAVEX400
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience38
Completeness75
Years active:12State licenses:1Digital endpointsOther names

3,157 EMERGENCY MEDICINE in MI

Provider Addresses for DR. BRETT JUSTIN GERSTNER (D.O.)

  • 1215 E MICHIGAN AVE

    LANSING, MI 489121811

    Phone: (517) 364-1000

    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)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

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: 2017-06-29

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
I20170629002912IEmergency MedicineMITBD

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 making131129$0
99284Emergency department visit with moderate level of medical decision making4543$0
View full utilization report →

Insurance plans in this area (ZIP 48912)

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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: 8022414010View full group profile
NameSpecialtyState
Emergency Medicine, Internal MedicineMI
Emergency MedicineOH
Emergency MedicineMN
Emergency MedicineMI
Emergency MedicineMI
Emergency MedicineMI
Physician AssistantMI
Emergency MedicineMI
Emergency MedicineMI
Physician AssistantMI

Reviews

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Frequently asked questions

How do payers reference DR. BRETT JUSTIN GERSTNER (D.O.)?
For DR. BRETT JUSTIN GERSTNER (D.O.), use NPI 1013356021 as the unique 10-digit identifier.
Would DR. BRETT JUSTIN GERSTNER (D.O.) appear as active to a payer?
You can treat DR. BRETT JUSTIN GERSTNER (D.O.) as active for directory purposes; confirm clinical privileges separately.
How would a patient describe DR. BRETT JUSTIN GERSTNER (D.O.)'s focus?
For DR. BRETT JUSTIN GERSTNER (D.O.), the primary taxonomy reads as Emergency Medicine Physician. Clinical services aligned with this taxonomy classification.
Where in Michigan is DR. BRETT JUSTIN GERSTNER (D.O.) registered?
Use Lansing, Michigan as the headline location for DR. BRETT JUSTIN GERSTNER (D.O.) here.
What does 2 location(s) imply?
2 practice locations appear in the available data.

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