ROBERT J GUNDERSON D.O.
NPI 1598748907
Orthopaedic Surgery in Chickasha, OK

Q: What is Robert Gunderson's NPI number?

The NPI number for Robert Gunderson is 1598748907. It was assigned to this individual provider in the NPPES registry on November 21, 2005.

Q: What is Robert Gunderson's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for Robert Gunderson was last updated on February 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 November 21, 2005PECOS EnrolledAccepts Medicare Assignment

2116 W IOWA AVE, CHICKASHA, OK 73018(405) 224-2100(405) 779-2801 Get Directions Write a Review

NPPES record last updated: February 13, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

On this page

About Robert J Gunderson D.o. NPPES

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

ROBERT J GUNDERSON D.O. (NPI 1598748907) is an individual orthopaedic surgery provider in Chickasha, Oklahoma, licensed in Oklahoma (3030) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Grady Memorial Hospital, and is a graduate of Oklahoma State University College Of Osteopathic Medicine (1991).

NPPES Registry Identity

NPI1598748907

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameROBERT J GUNDERSONCredential: D.O.

Location Address2116 W IOWA AVEChickasha, OK 73018-2736

Mailing Address2116 W Iowa AveChickasha, OK 73018-2736 · (405) 224-2100 · Fax (405) 779-2801

Phone(405) 224-2100

Fax(405) 779-2801

Sole ProprietorNo

Medical School CMSOklahoma State University College Of Osteopathic MedicineGraduated 1991

Enumeration DateNovember 21, 2005

Last NPPES UpdateFebruary 13, 2026

NPPES CertifiedFebruary 13, 2026

✔ NPI 1598748907 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in OK · 3030

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

2116 W IOWA AVE, Chickasha, OK 73018

Open in Google Maps ↗

Other Identifiers 1

Medicaid100257690BOK

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Antidote Health of TX, Blue Cross and Blue Shield of Oklahoma.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

Robert J Gunderson D.o. 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 ID7214926500

PECOS Enrollment IDI20200601000788

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 Robert Gunderson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Grady Memorial Hospital

Same address

Clinic/Center

2100 W IOWA AVE
Chickasha, OK 73018

Reassigned Medicare billing, Oklahoma enrollment
97 clinicians in this Medicare group

NPI 1659302115 (405) 224-2100

Mercy Clinic Oklahoma Communities

44 mi

Family Medicine

4300 W MEMORIAL RD
Oklahoma City, OK 73120

Reassigned Medicare billing, Oklahoma enrollment
975 clinicians in this Medicare group

NPI 1386874550 (405) 752-3333

C H Wilkinson Physician Network

160 mi

Family Medicine

919 HIDDEN RDG, 6TH FLOOR
Irving, TX 75038

Reassigned Medicare billing, Texas enrollment
179 clinicians in this Medicare group

NPI 1457382947 (469) 282-2711

Acute Care Surgical Affiliates Of Texas PA

502 mi

Surgery

600 ELIZABETH ST
Corpus Christi, TX 78404

Reassigned Medicare billing, Texas enrollment
130 clinicians in this Medicare group

NPI 1407322415 (916) 441-0400

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 14

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.

198 services110 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.

85 services85 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.

65 services55 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

63 services17 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.

56 services44 patients

Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg J0702

This injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.

46 services18 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

39 services26 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.

35 services35 patients

Injection, methylprednisolone acetate, 80 mg J1040

Methylprednisolone acetate is a strong anti-inflammatory medication. It is often given as an 80 mg injection to reduce inflammation and pain. It's commonly used for conditions like arthritis, allergic disorders, or other inflammatory diseases.

35 services12 patients

Aspiration and/or injection of fluid large joint using ultrasound guidance 20611

This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.

34 services30 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.

29 services29 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.

20 services20 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.

17 services17 patients

Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement 27236

This procedure involves treating a fracture at the top of your thigh bone. A stabilizing device or prosthetic replacement is placed to aid in healing. This helps restore mobility and function while reducing pain. The treatment aims for a quick and safe recovery.

16 services16 patients

Hospital Affiliations CMS Care Compare 2

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

Grady Memorial Hospital

Acute Care Hospitals · Chickasha, OK

3/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number370054

Location2220 Iowa StreetChickasha, OK 73018 · Grady County

Emergency services

The Physicians' Hospital In Anadarko

Critical Access Hospitals · Anadarko, OK

OwnershipProprietary

CMS Certification Number371314

Location1002 E Central BlvdAnadarko, OK 73005 · Caddo County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 73018 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

$82.46 typical visit price

range $53.00 – $162.61

Typical copayment $20.61 (range $13.25 – $40.65)

Most-billed visit code 99203

Established Patient

$66.48 typical visit price

range $16.68 – $132.40

Typical copayment $16.62 (range $4.17 – $33.10)

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.

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.

JACOB DUANE BOYD PA-C

Physician Assistant