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Dr. Gretchen Koller, DO

  • Southfield, MI
  • Neurosurgeon
NPI1821771536
Industry payments
$15
State license
1
Year NPI issued
2023
Practice address
16001 W 9 Mile Rd, Southfield, MI 48075-4818
Practice phone
Call (248) 849-3403
Professional email
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Personal email
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Mobile number
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Social profiles

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Dr. Gretchen Koller is a neurosurgeon in Southfield, Michigan

Dr. Koller practices in Southfield, Michigan.

Dr. Koller's NPI, 1821771536, was assigned on August 9, 2023. Dr. Koller holds Michigan license 5151016812.

NPI and contact details
NPI
1821771536NPI Registry (opens in a new tab)
NPI enumeration date
August 9, 2023
NPI status
Active
Practice phone
(248) 849-3403
Professional email
Get email
Personal email
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Mobile number
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Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data

Dr. Gretchen Koller's practice address is in Southfield, Michigan

Dr. Koller's practice address in the NPI Registry is 16001 W 9 Mile Rd, Southfield, MI 48075-4818. The practice phone is (248) 849-3403.

  • NPI Registry address
    16001 W 9 Mile Rd, Southfield, MI 48075-4818Phone(248) 849-3403

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dmand AI tracks the EHR system at Dr. Gretchen Koller's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Koller practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Dr. Koller's practiceAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Gretchen Koller is one of 256 neurosurgeons in Michigan

Neurological surgery is Dr. Koller's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Koller is licensed in Michigan.

Specialties and state licenses

  • Neurological surgery, MichiganPrimaryLicense 5151016812 · taxonomy 207T00000X

Neurosurgeons near Dr. Koller

Counts of neurosurgeons with a Dmand AI profile, by place and practice. Each opens the list.

256neurosurgeons in Michigan
8neurosurgeons in Southfield

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Gretchen Koller received $15 in industry payments in 2024

CMS Open Payments shows 1 general payment to Dr. Koller from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $15.

Companies that paid Dr. Koller the most, 2024 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Koller

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Gretchen Koller's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Gretchen Koller

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Gretchen Koller's NPI number?

Dr. Gretchen Koller's NPI number is 1821771536. It was assigned on August 9, 2023, and it is active in the NPI Registry.

What kind of doctor is Dr. Gretchen Koller?

Dr. Gretchen Koller is a neurosurgeon in Southfield, Michigan. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).

Where does Dr. Gretchen Koller practice?

Dr. Koller practices at 16001 W 9 Mile Rd, Southfield, MI 48075-4818.

What is Dr. Gretchen Koller's office phone number?

The practice phone on file for Dr. Koller is (248) 849-3403.

What is Dr. Gretchen Koller's medical license number?

Dr. Koller holds Michigan license 5151016812.

Has Dr. Gretchen Koller received payments from drug or device companies?

CMS Open Payments shows $15 in general payments to Dr. Koller from 1 company from 2024 to 2024. The largest total came from Medtronic, Inc.

How long has Dr. Gretchen Koller been practicing?

Dr. Koller's NPI was assigned in 2023.

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