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WILLIAM GREGORY TIMMER DO
NPI 1174086128
Emergency Medicine in Marietta, OH

Active since April 08, 2019PECOS EnrolledAccepts Medicare Assignment
401 MATTHEW STREET, EMERGENCY DEPARTMENT, MARIETTA, OH 45750(740) 568-5669 Get Directions Write a Review

NPPES record last updated: April 26, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 26, 2022, Apr 8, 2019 (2 updates tracked since 2019).

About William Gregory Timmer Do NPPES

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

WILLIAM GREGORY TIMMER DO (NPI 1174086128) is an individual emergency medicine provider in Marietta, Ohio, licensed in Ohio (34.015660) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Marietta Memorial Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1174086128
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameWILLIAM GREGORY TIMMERCredential: DO
Location Address401 MATTHEW STREET, EMERGENCY DEPARTMENTMarietta, OH 45750-4575
Mailing Address401 Matthew Street, Emergency DepartmentMarietta, OH 45750 · (740) 568-5669
Phone(740) 568-5669
Sole ProprietorYes
Medical School CMSOtherGraduated 2019
Enumeration DateApril 8, 2019
Last NPPES UpdateApril 26, 20222 updates tracked since enumeration
NPPES CertifiedApril 26, 2022
✔ NPI 1174086128 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in OH · 34.015660
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
401 MATTHEW STREET, Marietta, OH 45750
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Secondary Practice Locations 2

Location 1799 Farson StBelpre, OH 45714-1082 · Phone (740) 401-1150
Location 21106 Colegate DrMarietta, OH 45750-1323 · Phone (740) 568-2000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.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

William Gregory Timmer Do 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 ID1951789924
PECOS Enrollment IDI20220602002396
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 4

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
335 services320 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
122 services122 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
73 services72 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
15 services15 patients

Hospital Affiliations CMS Care Compare

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

Marietta Memorial Hospital

Acute Care Hospitals · Marietta, OH
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number360147
Location401 Matthew StreetMarietta, OH 45750 · Washington County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 45750 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
$84.72 typical visit price
range $54.34 – $166.65
Typical copayment $21.18 (range $13.58 – $41.66)
Most-billed visit code 99203
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 5

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

ZACHARY PHILIP TRITSCH MD
Emergency Medicine
401 MATTHEW STREET, EMERGENCY DEPARTMENT
MARIETTA, OH 45750
Washington County (740) 568-5669
DR. WILLIAM TRIBLE GATEWOOD JR. D.O.
Emergency Medicine
401 MATTHEW STREET, EMERGENCY DEPARTMENT
MARIETTA, OH 45750
Washington County (740) 568-5669
MATTHEW RICHARD PECK MD
Emergency Medicine
401 MATTHEW STREET, EMERGENCY DEPARTMENT
MARIETTA, OH 45750
Washington County (740) 568-5669
JOSHUA LEONARD MD
Emergency Medicine
401 MATTHEW STREET, EMERGENCY DEPARTMENT
MARIETTA, OH 45750
Washington County (740) 568-5669
MATTHEW PHILLIPS
Emergency Medicine
401 MATTHEW STREET, EMERGENCY DEPARTMENT
MARIETTA, OH 45750
Washington County (740) 568-5669

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 William Timmer's NPI number?

The NPI number for William Timmer is 1174086128. It was assigned to this individual provider in the NPPES registry on April 8, 2019.

Where is William Timmer located?

William Timmer practices at 401 Matthew Street Emergency Department, Marietta, OH 45750. The listed phone number is (740) 568-5669.

What is William Timmer's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is William Timmer enrolled in Medicare?

Yes. William Timmer 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 William Timmer accept?

Health plans from CareSource list William Timmer 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 William Timmer affiliated with any hospitals?

According to CMS data, William Timmer is affiliated with Marietta Memorial Hospital.

When was this NPI record last updated?

The NPPES record for William Timmer was last updated on April 26, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.