JOHN OOSTENDORP (MD) – Internal Medicine Physician, NPI 1790725802

JOHN OOSTENDORP (MD) is a healthcare provider. based in Grand rapids, Michigan. specializing in Internal Medicine Physician. They hold the professional credentials MD. They hold a License No. 4301042921 (MI). The NPI Number for JOHN OOSTENDORP (MD) is 1790725802

Main info

Male
48 Years Of Experience
Accepts Medicare Assignment
Name
JOHN OOSTENDORP (MD)
NPI
1790725802
Phone
Not provided
Address
100 MICHIGAN ST NE
Enumeration Date
7 June 2006
Last Update Date
7 January 2022

Doctor Profile

Medical School Name
UNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Secondary Phone
-
Graduation Year
1978 (48 years ago)
PAC ID
6406985548
Group Practice PAC ID
4587568647
Professional Enrollment ID
I20100527000339
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience64
Completeness75
Years active:20State licenses:1Digital endpointsOther names

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Provider Addresses for JOHN OOSTENDORP (MD)

  • Spectrum Health Butterworth Hospital, 100, Michigan Street Northeast, Grand Rapids, Kent County, Michigan, 49503, United States

    MC 845

    GRAND RAPIDS, MI 495032560

    Phone:

    Type: Mailing

  • 588, East Lakewood Boulevard, Waverly, Holland Charter Township, Ottawa County, Michigan, 49424, United States

    HOLLAND, MI 494242023

    Phone: (616) 494-5800

    Fax: (616) 494-5901

    Type: Location

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.

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Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

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

No Medicare enrollment or revalidation data available for this provider in our database.

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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.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 49503)

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Provider's Procedures

JOHN OOSTENDORP (MD) performs procedures in Internal Medicine Physician. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
INTERNAL MEDICINEMI83036Hemoglobin A1C level4528

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: 4587568647View full group profile
NameSpecialtyState
Critical Care (Intensivists)IL
Physician AssistantMI
Physician AssistantMI
Physician AssistantMI
-MI
Vascular SurgeryIL
-MI
-MI
A N E S T H E S I O L O G YTX
Clinical Social WorkerMI

Reviews

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Frequently asked questions

Does JOHN OOSTENDORP (MD) have a public NPI I can cite?
Public records show JOHN OOSTENDORP (MD) under NPI 1790725802.
Is JOHN OOSTENDORP (MD) currently accepting referrals based on NPI status?
Registry metadata lists JOHN OOSTENDORP (MD) as active.
How should patients interpret JOHN OOSTENDORP (MD)'s specialty?
The extract shows Internal Medicine Physician for JOHN OOSTENDORP (MD). Clinical services aligned with this taxonomy classification.
Which community is linked to JOHN OOSTENDORP (MD)?
JOHN OOSTENDORP (MD) shows a connection to Grand Rapids, Michigan in registry-derived data.
Can I verify credentials using only NPI?
NPI confirms identity in the directory; licensure and board certification require separate checks.

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