DR. JOSEPH L. WARREN (D.O.) – Emergency Medical Services (Emergency Medicine) Physician, NPI 1104805944

DR. JOSEPH L. WARREN (D.O.) is a healthcare provider. based in Livonia, Michigan. specializing in EMERGENCY MEDICINE. They hold the professional credentials D.O.. They hold a License No. 5101015058 (MI). The NPI Number for DR. JOSEPH L. WARREN (D.O.) is 1104805944

Main info

Male
25 Years Of Experience
Accepts Medicare Assignment
Name
DR. JOSEPH L. WARREN (D.O.)
NPI
1104805944
Phone
(734) 632-0175
Address
38935 ANN ARBOR RD
Enumeration Date
11 January 2006
Last Update Date
9 July 2007

Doctor Profile

Medical School Name
MICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Secondary Phone
5179756475
Graduation Year
2001 (25 years ago)
PAC ID
9739126095
Group Practice PAC ID
3971416082
Professional Enrollment ID
I20050408000705
Address ID
MI489108394LA2900XRDXX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

3,157 EMERGENCY MEDICINE in MI

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Provider Addresses for DR. JOSEPH L. WARREN (D.O.)

  • Ann Arbor Road, Livonia, Wayne County, Michigan, 48185:48187, United States

    LIVONIA, MI 481503354

    Phone: (734) 632-0175

    Fax: (734) 632-0182

    Type: Mailing

  • Beaumont Hospital - Dearborn, 18101, Oakwood Boulevard, Dearborn, Wayne County, Michigan, 48124, United States

    DEARBORN, MI 481244089

    Phone: (313) 593-7000

    Type: Location

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 $14.

Total Amount is formed as General ($14) + Research ($0) + Ownership ($0) = $14.

Last reported payment date: 2024-05-01 • Largest payer in this snapshot: Genentech USA, Inc. ($14).

Total Amount

$14

General + Research + Ownership

Payments

1

Total payment records

General Amount

$14

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-05-01

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
Genentech USA, Inc.$14
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: 2005-04-08

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
I20050408000705IEmergency 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 making215204$0
99284Emergency department visit with moderate level of medical decision making9088$0
View full utilization report →

Insurance plans in this area (ZIP 48150)

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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: 3971416082View full group profile
NameSpecialtyState
Internal MedicineMI
Emergency MedicineMI
Emergency MedicineMI
Family PracticeMI
Emergency MedicineIL
-GA
Emergency MedicineMI
Physician AssistantMI
-MI
Emergency MedicineMI

Reviews

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Frequently asked questions

Can I verify DR. JOSEPH L. WARREN (D.O.) with an NPI only?
You can start verification with NPI 1104805944 for DR. JOSEPH L. WARREN (D.O.), then check state licensing separately.
Can I rely on DR. JOSEPH L. WARREN (D.O.) being an active provider?
As of the registry snapshot, DR. JOSEPH L. WARREN (D.O.) is marked active.
What is DR. JOSEPH L. WARREN (D.O.)'s specialty?
The listing groups DR. JOSEPH L. WARREN (D.O.) with Emergency Medical Services (Emergency Medicine) Physician. Clinical services aligned with this taxonomy classification.
What area does DR. JOSEPH L. WARREN (D.O.) serve?
DR. JOSEPH L. WARREN (D.O.)'s listing highlights Livonia, Michigan; more addresses can appear in NPPES.
How many locations tie to this NPI?
2 practice locations appear in the available data.

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