Dr. Robert J Gunderson , DO
Orthopaedic Surgery โข Chickasha, OK
2116 W Iowa Ave
Chickasha, OK 730182736
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Robert Gunderson is listed in NPPES under Orthopaedic Surgery.
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NPI assigned on November 21, 2005; this date does not establish years in practice.
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Published CMS data list 815 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 โ Established patient outpatient office visit: 198 service units.
- 99203 โ New patient outpatient office visit: 85 service units.
- 99214 โ Established patient outpatient office visit: 65 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 16 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 631 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) โ 257 prescription fills, including refills.
- Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) โ 86 prescription fills, including refills.
- Promethazine Hcl โ 58 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 11 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 70% of clinicians listed under Orthopaedic Surgery in Oklahoma (2024, 165 clinicians with data). Median for this group: 1,360. Middle half: 769 to 3,169.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 104 in 2020 to 815 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
2116 W Iowa Ave
Chickasha, OK 730182736
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Grady Memorial Hospital. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Oklahoma State University College Of Osteopathic Medicine
1991
What Public CMS Data Show
Orthopaedic Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
276 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $71,931 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $56,413 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
643 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$5,127 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $255.12 across 11 records.
By nature of payment
- Food and Beverage: $255.12 across 11 records.
Reporting-company totals (3 largest of 9)
- VERTEX PHARMACEUTICALS INCORPORATED: $47.20 across 2 records.
- Acera Surgical, Inc.: $36.06 across 1 record.
- P Bar Medical LLC: $32.14 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
35 years (graduated 1991)
CMS Doctors and Clinicians data list 1991 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Gunderson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Gunderson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Chickasha and Oklahoma
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 70% of clinicians listed under Orthopaedic Surgery in Oklahoma (2024, 165 clinicians with data). Median for this group: 1,360. Middle half: 769 to 3,169.
Too few clinicians listed under Orthopaedic Surgery in Chickasha have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 65% of clinicians listed under Orthopaedic Surgery in Oklahoma (2024, 165 clinicians with data). Median for this group: $97,643. Middle half: $60,464 to $173,125.
Too few clinicians listed under Orthopaedic Surgery in Chickasha have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 60% of clinicians listed under Orthopaedic Surgery in Oklahoma (2024, 165 clinicians with data). Median for this group: $74,047. Middle half: $43,533 to $133,955.
Too few clinicians listed under Orthopaedic Surgery in Chickasha have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 75% of clinicians listed under Orthopaedic Surgery in Oklahoma (2024, 179 clinicians with data). Median for this group: 304. Middle half: 103 to 610.
Too few clinicians listed under Orthopaedic Surgery in Chickasha have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 65% of clinicians listed under Orthopaedic Surgery in Oklahoma (2024, 179 clinicians with data). Median for this group: $3,201. Middle half: $812 to $6,400.
Too few clinicians listed under Orthopaedic Surgery in Chickasha have Medicare Part D data for 2024 to compare.
4 active clinicians are listed under Orthopaedic Surgery with a practice address in Chickasha, OK (302 in Oklahoma).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 684% from 104 in 2020 to 815 in 2024.
- 2020: 104
- 2021: 124
- 2022: 166
- 2023: 665
- 2024: 815
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Medicare-allowed amount
Medicare-allowed amount increased 512% from $11,755 in 2020 to $71,931 in 2024.
- 2020: $11,755
- 2021: $8,419
- 2022: $35,225
- 2023: $60,171
- 2024: $71,931
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Paid by Medicare
Paid by Medicare increased 512% from $9,212 in 2020 to $56,413 in 2024.
- 2020: $9,212
- 2021: $6,736
- 2022: $27,873
- 2023: $45,828
- 2024: $56,413
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 11 in 2020 to 631 in 2024.
- 2020: 11
- 2021: 172
- 2022: 132
- 2023: 393
- 2024: 631
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30-day fills
30-day fills went from 11 in 2020 to 643 in 2024.
- 2020: 11
- 2021: 176
- 2022: 132
- 2023: 407
- 2024: 643
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Part D drug cost
Part D drug cost went from $52 in 2020 to $5,127 in 2024.
- 2020: $52
- 2021: $1,194
- 2022: $1,532
- 2023: $3,877
- 2024: $5,127
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $74.87 in 2020 to $255.12 in 2025.
- 2020: $74.87
- 2022: $345.83
- 2023: $177.41
- 2024: $135.02
- 2025: $255.12
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 11 records totaling $255.12.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Acera Surgical, Inc. |
Food and Beverage
In-kind items and services
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Restrata Wound Matrix | General | $36.06 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
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INCEPTIV | General | $30.81 |
| Organogenesis Inc. |
Food and Beverage
In-kind items and services
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APLIGRAF | General | $30.66 |
| VERTEX PHARMACEUTICALS INCORPORATED |
Food and Beverage
In-kind items and services
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JOURNAVX | General | $25.11 |
| Pacira Pharmaceuticals Incorporated |
Food and Beverage
In-kind items and services
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Zilretta | General | $24.00 |
| VERTEX PHARMACEUTICALS INCORPORATED |
Food and Beverage
In-kind items and services
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JOURNAVX | General | $22.09 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $20.80 |
| Paratek Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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NUZYRA | General | $18.90 |
| P Bar Medical LLC |
Food and Beverage
In-kind items and services
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โ | General | $17.62 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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INFINITY ADAPTIS | General | $14.55 |
| P Bar Medical LLC |
Food and Beverage
In-kind items and services
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โ | General | $14.52 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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198 | 110 | $197.50 | $83.20 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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85 | 85 | $261.82 | $102.87 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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65 | 55 | $206.31 | $117.29 |
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J1100
Injection, dexamethasone sodium phosphate, 1 mg
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63 | 17 | $10.67 | $0.11 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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56 | 44 | $184.45 | $51.16 |
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J0702
Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg
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46 | 18 | $8.00 | $6.73 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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41 | 37 | $39.00 | $14.37 |
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20610
Aspiration and/or injection of fluid from large joint
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39 | 26 | $134.18 | $60.18 |
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J1010
Injection, methylprednisolone acetate, 1 mg
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36 | 21 | $23.86 | $0.13 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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35 | 35 | $362.26 | $151.58 |
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J1040
Injection, methylprednisolone acetate, 80 mg
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35 | 12 | $15.00 | $9.66 |
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20611
Aspiration and/or injection of fluid large joint using ultrasound guidance
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34 | 30 | $252.85 | $64.47 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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29 | 29 | $248.45 | $121.79 |
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99202
New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more
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20 | 20 | $215.00 | $62.12 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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17 | 17 | $470.00 | $160.44 |
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27236
Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement
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16 | 16 | $3504.50 | $1101.89 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 257 | 1,799 | $2,147.91 | 118 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 86 | 597 | $1,000.46 | 28 |
| Promethazine Hcl | Promethazine Hcl | 58 | 419 | $300.03 | 44 |
| Cephalexin | Cephalexin | 56 | 129 | $110.59 | 49 |
| Ibuprofen | Ibuprofen | 55 | 1,418 | $663.57 | 41 |
| Meloxicam | Meloxicam | 26 | 960 | $262.03 | โ |
| Tramadol Hcl | Tramadol Hcl | 25 | 199 | $59.51 | 17 |
| Clindamycin Hcl | Clindamycin Hcl | 21 | 187 | $237.90 | 17 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 17 | 180 | $156.24 | 12 |
| Prednisone | Prednisone | 15 | 225 | $55.42 | 11 |
| Naproxen | Naproxen | 15 | 555 | $133.28 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-02-13NUCC Taxonomy Code: 207X00000X
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ORTHOPEDIC SURGERY
I20160411001352
TX
7214926500
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Grady Memorial Hospital
2100 S Iowa Ave, Chickasha, OK 730182736
Phone: 4052242100
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Family
Master of Science, Registered Nurse, Advanced Practice Registered Nurse, Family Nurse Practitioner (Certified)
Surgery
Doctor of Medicine (M.D.)
Pain Medicine - Pain Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Advanced Practice Registered Nurse, Certified Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 2116 W IOWA AVE, CHICKASHA, OK 730182736 (Tel: 4052242100)
Registered at 2116 W IOWA AVE, CHICKASHA, OK 730182736
Registered at 1533 N HARRISON ST, SHAWNEE, OK 748044020 (Tel: 4057511766)
Registered at PO BOX 248855, OKLAHOMA CITY, OK 731248855
NPI status registered as active in NPPES database
Registered at 13313 N MERIDIAN, SUITE A-1, OKLAHOMA CITY, OK 73120 (Tel: 4057511766)
Registered at PO BOX 6814, EDMOND, OK 730836814 (Tel: 4057139940)
Recorded as ROBERT GUNDERSON, D.O.
Orthopaedic Surgery (license number reported to NPPES: OK 3030)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
2116 W Iowa Ave
Chickasha, OK 730182736
Phone: 4052242100