Robert Gunderson, D.O.
NPI 1598748907 · Orthopaedic Surgery Physician · Chickasha, OK
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Gunderson, D.O. is a Orthopaedic Surgery Physician provider in Chickasha, OK (NPI 1598748907).
Provider details
- NPI number
- 1598748907
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 3030 (OK)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
635 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 198 | $83 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 85 | $103 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 65 | $117 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 56 | $51 |
| 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'SG2211 | 41 | $14 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 257 | 118 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 86 | 28 |
| Promethazine Hcl | 58 | 44 |
| Cephalexin | 56 | 49 |
| Ibuprofen | 55 | 41 |
| Meloxicam | 26 | — |
| Tramadol Hcl | 25 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$135 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-21
- Last updated
- 2026-02-13
- Certified
- 2026-02-13
Frequently asked questions
- What is Robert Gunderson's NPI number?
- Robert Gunderson's National Provider Identifier (NPI) is 1598748907, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Gunderson's specialty?
- Robert Gunderson is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Gunderson located?
- Robert Gunderson's practice location on file with NPPES is 2116 W Iowa Ave, Chickasha, OK 73018-2736.
- What is Robert Gunderson's phone number?
- The practice phone number listed in the NPPES registry for Robert Gunderson is (405) 224-2100.
- Does Robert Gunderson accept Medicare?
- Robert Gunderson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Gunderson's NPI active?
- Yes — Robert Gunderson's NPI (1598748907) is active in the NPPES registry as of the last update on 2026-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.