KARRISA ANN GRELLNER M.D.
NPI 1851602106
Psychiatry & Neurology - Psychiatry in Columbia, MO

Q: What is Karrisa Grellner's NPI number?

The NPI number for Karrisa Grellner is 1851602106. It was assigned to this individual provider in the NPPES registry on July 1, 2010.

Q: What is Karrisa Grellner's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: Is Karrisa Grellner enrolled in Medicare?

No. Karrisa Grellner has opted out of Medicare through February 17, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Q: When was this NPI record last updated?

The NPPES record for Karrisa Grellner was last updated on July 1, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 01, 2010Opted out of Medicare · through Feb 17, 2028

ONE HOSPITAL DRIVE, DC018.00, COLUMBIA, MO 65212(573) 882-8006(573) 884-5396 Get Directions Write a Review

NPPES record last updated: July 1, 2010. Verified against the NPPES registry weekly; last sync: August 30, 2026.

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About Karrisa Ann Grellner M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KARRISA ANN GRELLNER M.D. (NPI 1851602106) is an individual psychiatry provider in Columbia, Missouri, licensed in Missouri (2010019758) and active in the NPI registry since July 2010. She has opted out of Medicare through February 17, 2028.

NPPES Registry Identity

NPI1851602106

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameKARRISA ANN GRELLNERCredential: M.D.

Location AddressONE HOSPITAL DRIVE, DC018.00Columbia, MO 65212

Mailing AddressOne Hospital Drive, Dc018.00Columbia, MO 65212 · (573) 882-8885 · Fax (573) 884-4808

Phone(573) 882-8006

Fax(573) 884-5396

Sole ProprietorNo

Enumeration DateJuly 1, 2010

✔ NPI 1851602106 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in MO · 2010019758

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

ONE HOSPITAL DRIVE, Columbia, MO 65212

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Karrisa Ann Grellner M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from February 17, 2026 through February 17, 2028.

Opt-Out Effective DateFebruary 17, 2026

Opt-Out In Effect ThroughFebruary 17, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CHRISTOS N PAPAGEORGIOU M.D., PHD

Internal Medicine (Medical Oncology)

ONE HOSPITAL DRIVE
COLUMBIA, MO 65212

Boone County (573) 882-2100

DEEPTHI SWAPNA AKELLA DO

Otolaryngology

ONE HOSPITAL DRIVE, MA 314
COLUMBIA, MO 65212

Boone County (573) 882-7935

KIMBERLY MCBRIDE JOHNSON P.A.

Physician Assistant (Surgical)

ONE HOSPITAL DRIVE
COLUMBIA, MO 65212

Boone County (573) 882-4909

ANNA ELIZABETH CUNDIFF M.D.

Family Medicine (Hospice and Palliative Medicine)

ONE HOSPITAL DRIVE
COLUMBIA, MO 65212

Boone County (573) 882-8445

DR. JELLA ANGELA AN M.D.

Ophthalmology

ONE HOSPITAL DRIVE
COLUMBIA, MO 65212

Boone County (573) 882-1506

DYLAN CARROLL

Emergency Medicine

ONE HOSPITAL DRIVE, SUITE M562
COLUMBIA, MO 65212

Boone County (573) 884-3233

SARAH JORDAN LANDRENEAU MD

Emergency Medicine

ONE HOSPITAL DRIVE
COLUMBIA, MO 65212

Boone County (573) 882-8091

SHELLAINE R FRAZIER DO

Pathology (Anatomic Pathology & Clinical Pathology)

ONE HOSPITAL DRIVE
COLUMBIA, MO 65212

Boone County (573) 882-1311

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Karrisa Grellner's NPI number?

The NPI number for Karrisa Grellner is 1851602106. It was assigned to this individual provider in the NPPES registry on July 1, 2010.

Where is Karrisa Grellner located?

Karrisa Grellner practices at One Hospital Drive Dc018.00, Columbia, MO 65212. The listed phone number is (573) 882-8006.

What is Karrisa Grellner's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Karrisa Grellner enrolled in Medicare?

No. Karrisa Grellner has opted out of Medicare through February 17, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Karrisa Grellner was last updated on July 1, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.