DR. JAMES FREDERICK GUENTHER D.O.
NPI 1417933490
Internal Medicine - Addiction Medicine in Lancaster, OH

Q: What is James Guenther's NPI number?

The NPI number for James Guenther is 1417933490. It was assigned to this individual provider in the NPPES registry on December 21, 2005.

Q: What is James Guenther's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Q: When was this NPI record last updated?

The NPPES record for James Guenther was last updated on August 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 December 21, 2005PECOS Enrolled

1319 E MAIN ST, LANCASTER, OH 43130(740) 653-9411(740) 277-6131 Get Directions Write a Review

NPPES record last updated: August 4, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 18, 2019, Apr 8, 2019 (2 updates tracked since 2019).

On this page

About Dr. James Frederick Guenther D.o. NPPES

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

DR. JAMES FREDERICK GUENTHER D.O. (NPI 1417933490) is an individual addiction medicine provider in Lancaster, Ohio, licensed in Ohio (34.004690) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Columbus.

NPPES Registry Identity

NPI1417933490

Entity TypeIndividualMale

Primary Taxonomy207RA0401X

Provider Legal NameDR. JAMES FREDERICK GUENTHERCredential: D.O.

Location Address1319 E MAIN STLancaster, OH 43130-4005

Mailing Address4600 Montgomery Rd Ste 400Cincinnati, OH 45212-2600 · (513) 873-1269 · Fax (513) 873-1567

Phone(740) 653-9411

Fax(740) 277-6131

Sole ProprietorYes

Enumeration DateDecember 21, 2005

Last NPPES UpdateAugust 4, 20232 updates tracked since enumeration

NPPES CertifiedAugust 4, 2023

✔ NPI 1417933490 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Addiction MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RA0401X

License✔ Licensed in OH · 34.004690

Definition

An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine.

Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License 34.004690 (OH)

1319 E MAIN ST, Lancaster, OH 43130

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Secondary Practice Location 1

Location 14660 Roberts RdColumbus, OH 43228-9671 · Phone (513) 834-7063 · Fax (513) 873-1567

Other Identifiers 2

Medicaid0733488OH

Other311274950OH · Tax I.d.

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Antidote Health Plan of Ohio, Inc., CareSource, MedMutual and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. James Frederick Guenther D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

Medicare enrollment records show James Guenther reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Fairfield Community Health Center

1.2 mi

Federally Qualified Health Center (FQHC)

220 E WALNUT ST
Lancaster, OH 43130

Reassigned Medicare billing, Ohio enrollment
30 clinicians in this Medicare group

NPI 1457676736 (740) 277-6043

First Step Recovery Center

21 mi

Addiction Medicine

1653 BRICE RD
Reynoldsburg, OH 43068

Reassigned Medicare billing, Ohio enrollment
37 clinicians in this Medicare group

NPI 1467826453 (614) 300-5878

Brightview LLC

111 mi

Psychiatry

446 MORGAN ST
Cincinnati, OH 45206

Reassigned Medicare billing, Ohio enrollment
168 clinicians in this Medicare group

NPI 1518622489 (833) 510-4357

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

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 office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

21 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 43130 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

$96.44 typical visit price

range $17.10 – $135.40

Typical copayment $24.11 (range $4.27 – $33.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

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

GLASS CITY OBGYN LLC

Obstetrics & Gynecology

1319 E MAIN ST
LANCASTER, OH 43130

Fairfield County (740) 687-2229

SEAN NATHANIEL JERIG M.D.

Obstetrics & Gynecology

1319 E MAIN ST
LANCASTER, OH 43130

Fairfield County (740) 687-2229

LABORATORY CORPORATION OF AMERICA HOLDINGS

Clinical Medical Laboratory

1319 E MAIN ST
LANCASTER, OH 43130

Fairfield County (740) 652-1185

EMILY ELLEN BURNETTE D.O

Obstetrics & Gynecology

1319 E MAIN ST
LANCASTER, OH 43130

Fairfield County (740) 687-2229

FAIRFIELD OB/GYN ASSOC INC

Obstetrics & Gynecology

1319 E MAIN ST
LANCASTER, PA 43130

Fairfield County (614) 451-7346

HALEY L HILLYARD NP

Nurse Practitioner (Family)

1319 E MAIN ST
LANCASTER, OH 43130

Fairfield County (740) 808-8039

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 James Guenther's NPI number?

The NPI number for James Guenther is 1417933490. It was assigned to this individual provider in the NPPES registry on December 21, 2005.

Where is James Guenther located?

James Guenther practices at 1319 E Main St, Lancaster, OH 43130. The listed phone number is (740) 653-9411.

What is James Guenther's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Is James Guenther enrolled in Medicare?

Yes. James Guenther is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for James Guenther's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Guenther reassigns Medicare benefits to 3 organizations: Fairfield Community Health Center (Lancaster, OH), First Step Recovery Center (Reynoldsburg, OH) and Brightview LLC (Cincinnati, OH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Guenther's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does James Guenther accept?

Health plans from Antidote Health Plan of Ohio, Inc., CareSource, MedMutual and Molina Healthcare list James Guenther 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 James Guenther was last updated on August 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.