DAVID R GIAMMAR M.D.
NPI 1154307858
Colon & Rectal Surgery in Hilliard, OH

Q: What is David Giammar's NPI number?

The NPI number for David Giammar is 1154307858. It was assigned to this individual provider in the NPPES registry on December 15, 2005.

Q: What is David Giammar's specialty?

The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.

Q: When was this NPI record last updated?

The NPPES record for David Giammar was last updated on April 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since December 15, 2005PECOS EnrolledAccepts Medicare Assignment

85.3/100

CMS Quality Rating

3853 TRUEMAN CT, HILLIARD, OH 43026(614) 210-2563(614) 210-2563 Get Directions Write a Review

NPPES record last updated: April 16, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 16, 2026, Nov 11, 2022, Apr 26, 2022 (3 updates tracked since 2022).

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About David R Giammar M.d. NPPES

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

DAVID R GIAMMAR M.D. (NPI 1154307858) is an individual colon & rectal surgery provider in Hilliard, Ohio, licensed in Ohio (35.077358) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Riverside Methodist Hospital, and is a graduate of Northeastern Ohio University College Of Medicine (1996).

NPPES Registry Identity

NPI1154307858

Entity TypeIndividualMale

Primary Taxonomy208C00000X

Provider Legal NameDAVID R GIAMMARCredential: M.D.

Location Address3853 TRUEMAN CTHilliard, OH 43026-2496

Mailing Address3853 Trueman CtHilliard, OH 43026-2496 · (614) 210-2563 · Fax (614) 210-2563

Phone(614) 210-2563

Fax(614) 210-2563

Sole ProprietorNo

Medical School CMSNortheastern Ohio University College Of MedicineGraduated 1996

Enumeration DateDecember 15, 2005

Last NPPES UpdateApril 16, 20263 updates tracked since enumeration

NPPES CertifiedApril 16, 2026

✔ NPI 1154307858 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyColon & Rectal SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208C00000X

Licenses✔ Licensed in OH · 35.077358✔ Licensed in MI · 4301102844

Definition

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

3853 TRUEMAN CT, Hilliard, OH 43026

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, CareSource, MedMutual 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

David R Giammar 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 ID9739152125

PECOS Enrollment IDI20040813001144

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 12

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 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.

68 services42 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

63 services51 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

51 services51 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

34 services26 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

24 services14 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

23 services23 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.

21 services16 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

20 services19 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

19 services19 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

15 services15 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

14 services14 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

14 services14 patients

Hospital Affiliations CMS Care Compare 5

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

Riverside Methodist Hospital

Acute Care Hospitals · Columbus, OH

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360006

Location3535 Olentangy River RdColumbus, OH 43214 · Franklin County

Emergency services Birthing friendly

Grand Lake Health System

Acute Care Hospitals · Saint Marys, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360032

Location200 Saint Clair StreetSaint Marys, OH 45885 · Auglaize County

Emergency services Birthing friendly

Mercer County Joint Township Community Hospital

Acute Care Hospitals · Coldwater, OH

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number360058

Location800 West Main StreetColdwater, OH 45828 · Mercer County

Birthing friendly

Aultman Hospital

Acute Care Hospitals · Canton, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number360084

Location2600 Sixth Street SWCanton, OH 44710 · Stark County

Emergency services Birthing friendly

Coshocton Regional Medical Center

Acute Care Hospitals · Coshocton, OH

OwnershipVoluntary non-profit - Private

CMS Certification Number360109

Location1460 Orange StreetCoshocton, OH 43812 · Coshocton County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 43026 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

$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.

85.3/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

83.63

Promoting Interoperability

Improvement Activities

Cost

69.04

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.

DR. ANDREA M COSTANZA D.O.

Dermatology

3853 TRUEMAN CT
HILLIARD, OH 43026

Franklin County (614) 777-1200

ROSEMARY JANE OAKS DO

Dermatology

3853 TRUEMAN CT
HILLIARD, OH 43026

Franklin County (614) 777-1200

KATIE XIAOYI WANG D.O.

Dermatology

3853 TRUEMAN CT
HILLIARD, OH 43026

Franklin County (614) 777-1200

DR. MARYA L CASSANDRA DO

Dermatology

3853 TRUEMAN CT
HILLIARD, OH 43026

Franklin County (614) 777-1200

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 David Giammar's NPI number?

The NPI number for David Giammar is 1154307858. It was assigned to this individual provider in the NPPES registry on December 15, 2005.

Where is David Giammar located?

David Giammar practices at 3853 Trueman Ct, Hilliard, OH 43026. The listed phone number is (614) 210-2563.

What is David Giammar's specialty?

The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.

Is David Giammar enrolled in Medicare?

Yes. David Giammar 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 David Giammar accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource, MedMutual, Molina Healthcare and Oscar Health Insurance list David Giammar 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 David Giammar affiliated with any hospitals?

According to CMS data, David Giammar is affiliated with Riverside Methodist Hospital, Grand Lake Health System, Mercer County Joint Township Community Hospital, Aultman Hospital and Coshocton Regional Medical Center.

When was this NPI record last updated?

The NPPES record for David Giammar was last updated on April 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.