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DR. THOMAS MICHAEL GRISCHOW O.D.
NPI 1932132818
Optometrist in Warren, OH

Active since July 07, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
4060 N RIVER RD NE, WARREN, OH 44484(330) 746-7691 Get Directions Write a Review

NPPES record last updated: January 14, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Thomas Michael Grischow O.d. NPPES

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

DR. THOMAS MICHAEL GRISCHOW O.D. (NPI 1932132818) is an individual optometrist in Warren, Ohio, licensed in Ohio (OPT004457) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Ohio State University - College Of Optometry (1993).

NPPES Registry Identity

NPI1932132818
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. THOMAS MICHAEL GRISCHOWCredential: O.D.
Location Address4060 N RIVER RD NEWarren, OH 44484-1039
Mailing Address10 Dutton Dr, Suite 200Youngstown, OH 44502-1818 · (330) 746-7691 · Fax (330) 743-8368
Phone(330) 746-7691
Sole ProprietorNo
Medical School CMSOhio State University - College Of OptometryGraduated 1993
Enumeration DateJuly 7, 2006
Last NPPES UpdateJanuary 14, 2025
NPPES CertifiedJanuary 14, 2025
✔ NPI 1932132818 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in OH · OPT004457
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
4060 N RIVER RD NE, Warren, OH 44484
Open in Google Maps ↗

Secondary Practice Locations 2

Location 110 Dutton Dr, Suite 200Youngstown, OH 44502-1818 · Phone (330) 746-7691 · Fax (330) 743-8368
Location 21075 W Western Reserve RdPoland, OH 44514-3541 · Phone (330) 746-7691

Other Identifiers 1

Medicaid0958281OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Thomas Michael Grischow O.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6709856057
PECOS Enrollment IDI20040726001477
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
444 services439 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
326 services270 patients
Imaging of retina 92134
Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.
176 services153 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
121 services120 patients
Exam of visual field with extended testing 92083
An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.
110 services107 patients
New patient complete exam of visual system 92004
A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.
72 services72 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 44484 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.12 typical visit price
range $54.34 – $166.65
Typical copayment $31.53 (range $13.58 – $41.66)
Most-billed visit code 99204
Established Patient
$68.07 typical visit price
range $17.10 – $135.40
Typical copayment $17.01 (range $4.27 – $33.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Improvement Activities40

Other Providers at the Same Location NPPES 4

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

TAYLOR LYNN RICHARDS OD
Optometrist
4060 N RIVER RD NE
WARREN, OH 44484
Trumbull County (330) 746-7691
EYE CARE ASSOCIATES, INC
Ophthalmology
4060 N RIVER RD NE
WARREN, OH 44484
Trumbull County (330) 746-7691
CARISA ELAINE BOHNAK MD
Ophthalmology
4060 N RIVER RD NE
WARREN, OH 44484
Trumbull County (330) 746-7691
DR. NICHOLAS GEORGE LAWRENCE O.D.
Optometrist
4060 N RIVER RD NE
WARREN, OH 44484
Trumbull County (330) 746-7691

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 Thomas Grischow's NPI number?

The NPI number for Thomas Grischow is 1932132818. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Where is Thomas Grischow located?

Thomas Grischow practices at 4060 N River Rd NE, Warren, OH 44484. The listed phone number is (330) 746-7691.

What is Thomas Grischow's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Thomas Grischow enrolled in Medicare?

Yes. Thomas Grischow is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Thomas Grischow accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and CareSource and 5 other insurers list Thomas Grischow as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Thomas Grischow was last updated on January 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.