1. Home
  2. Directory
  3. Ohio
  4. Warren
  5. Otolaryngology
  6. NPI Profile

TONIA L FARMER M.D.
NPI 1801899034
Otolaryngology in Warren, OH

Active since May 23, 2005PECOS EnrolledAccepts Medicare Assignment
3893 E MARKET ST, WARREN, OH 44484(330) 856-4000(330) 609-9910 Get Directions Write a Review

NPPES record last updated: July 2, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 2, 2025, May 7, 2025, Mar 11, 2025 and 1 more (4 updates tracked since 2017).

About Tonia L Farmer M.d. NPPES

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

TONIA L FARMER M.D. (NPI 1801899034) is an individual otolaryngology provider in Warren, Ohio, licensed in Ohio (35.079793) and active in the NPI registry since May 2005. She is enrolled in Medicare PECOS, is affiliated with Olmsted Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1801899034
Entity TypeIndividualFemale
Primary Taxonomy207Y00000X
Provider Legal NameTONIA L FARMERCredential: M.D.
Location Address3893 E MARKET STWarren, OH 44484-4706
Mailing Address3893 E Market StWarren, OH 44484-4706 · (330) 856-4000 · Fax (330) 609-9910
Phone(330) 856-4000
Fax(330) 609-9910
Sole ProprietorNo
Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 1996
Enumeration DateMay 23, 2005
Last NPPES UpdateJuly 2, 20254 updates tracked since enumeration
NPPES CertifiedJuly 2, 2025
✔ NPI 1801899034 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
Licenses✔ Licensed in OH · 35.079793✔ Licensed in MN · 79182
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
3893 E MARKET ST, Warren, OH 44484
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1433 W High StBryan, OH 43506-1690 · Phone (419) 633-7389 · Fax (419) 636-8903
Location 2210 9th St SERochester, MN 55904-6756 · Phone (507) 288-3443

Other Identifiers 1

Medicaid2276095OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health 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 and accepts Medicare assignment

Tonia L Farmer M.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 ID5193894434
PECOS Enrollment IDI20091015000102, I20250310001432
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

3

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

Warren Otologic Group, Inc
Same address
Otolaryngology
3893 E MARKET ST
Warren, OH 44484
  • Reassigned Medicare billing, Ohio enrollment
  • 19 clinicians in this Medicare group
NPI 1720023351 (330) 856-4000
Midwest Community Health Associates, Inc.
198 mi
Family Medicine
442 W HIGH ST
Bryan, OH 43506
  • Reassigned Medicare billing, Ohio enrollment
  • 133 clinicians in this Medicare group
NPI 1619915170 (419) 636-4517
Olmsted Medical Center
624 mi
General Acute Care Hospital
1650 4TH ST SE
Rochester, MN 55904
  • Reassigned Medicare billing, Minnesota enrollment
  • 379 clinicians in this Medicare group
NPI 1538112131 (507) 288-3443

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 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.

Professional service for preparation and provision of 1 or more antigens 95165
This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.
215 services13 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
75 services65 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.
75 services65 patients
Diagnostic exam of nasal passages using an endoscope 31231
A diagnostic exam of nasal passages using an endoscope is a non-invasive procedure. A small, flexible tube with a light and camera at the end, called an endoscope, is inserted into the nose. This allows the doctor to view the nasal passages and sinuses, helping to identify any issues.
43 services27 patients
New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202
This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.
32 services32 patients
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.
28 services25 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Olmsted Medical Center

Acute Care Hospitals · Rochester, MN
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number240006
Location1650 Fourth Street SoutheastRochester, MN 55904 · Olmsted County
Emergency services Birthing friendly

Community Hospitals And Wellness Centers

Acute Care Hospitals · Bryan, OH
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number360121
Location433 West High StreetBryan, OH 43506 · Williams County
Birthing friendly

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.

Reported Quality Measures

Breast Cancer Screening
Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer
12%356 patients1/55-star benchmark: 92%
Cervical Cancer Screening
Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…
8%393 patients
Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
27%576 patients2/55-star benchmark: 85%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
92%1,444 patients4/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
100%803 patients5/55-star benchmark: 99%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
91%433 patients3/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
17%1,624 patients1/55-star benchmark: 97%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
4%437 patients1/55-star benchmark: 90%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
47%1,118 patients2/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 52% · 66 patients
Patients tobacco: 93% · 404 patients
100%404 patients5/55-star benchmark: 98%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
57%1,624 patients3/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers12 claims72 services$1.74 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 15

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

LINDA S LOGAN CRNA
Nurse Anesthetist, Certified Registered
3893 E MARKET ST
WARREN, OH 44484
Trumbull County (330) 856-1272
MRS. REBECCA ANN WALKER M.A., CCC-A
Audiologist
3893 E MARKET ST
WARREN, OH 44484
Trumbull County (330) 856-4000
LEONARD P BERENHOLZ M.D.
Otolaryngology (Otology & Neurotology)
3893 E MARKET ST
WARREN, OH 44484
Trumbull County (330) 856-4000
MRS. BARBARA SUSAN MILLER NP
Nurse Practitioner (Family)
3893 E MARKET ST
WARREN, OH 44484
Trumbull County (330) 856-4000
MRS. KATHIE G GRIFFITH MA
Audiologist
3893 E MARKET ST
WARREN, OH 44484
Trumbull County (330) 856-7585
MR. LAWRENCE D LETCHER CRNA
Nurse Anesthetist, Certified Registered
3893 E MARKET ST, STE 2
WARREN, OH 44484
Trumbull County (330) 856-1272
MR. JOHN MARK BURKEY M.A.
Audiologist
3893 E MARKET ST
WARREN, OH 44484
Trumbull County (330) 856-7585
LIPPY SURGERY CENTER LLC
Clinic/Center (Ambulatory Surgical)
3893 E MARKET ST
WARREN, OH 44484
Trumbull County (330) 856-3075

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 Tonia Farmer's NPI number?

The NPI number for Tonia Farmer is 1801899034. It was assigned to this individual provider in the NPPES registry on May 23, 2005.

Where is Tonia Farmer located?

Tonia Farmer practices at 3893 E Market St, Warren, OH 44484. The listed phone number is (330) 856-4000.

What is Tonia Farmer's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Tonia Farmer enrolled in Medicare?

Yes. Tonia Farmer 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.

Which organizations bill Medicare for Tonia Farmer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tonia Farmer reassigns Medicare benefits to 3 organizations: Warren Otologic Group, Inc (Warren, OH), Midwest Community Health Associates, Inc. (Bryan, OH) and Olmsted Medical Center (Rochester, MN). 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 Tonia Farmer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tonia Farmer accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 2 other insurers list Tonia Farmer 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.

Is Tonia Farmer affiliated with any hospitals?

According to CMS data, Tonia Farmer is affiliated with Olmsted Medical Center and Community Hospitals And Wellness Centers.

When was this NPI record last updated?

The NPPES record for Tonia Farmer was last updated on July 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.