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Edit this profileAt a glance
- 423 Calhoun Ave, B, Greenwood, SC 29649
About Dr. Oncken
Listed in the NPI registry as a chiropractor, Nathaniel C. Oncken, DC practices in Greenwood, SC. Nathaniel graduated from Sherman College of Straight Chiropractic in 2005. According to Medicare claims data, Nathaniel cared for 130 Medicare patients across 1,062 services. The services billed most often include chiropractic manipulative treatment, 3-4 spinal regions. NPI 1447211214 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (864) 223-2224
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
423 CALHOUN AVE B
Greenwood, SC 29649
Conditions Supported and Services
Within Chiropractic generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Arm & Elbow
Chronic pain
Foot & ankle
Head & jaw
Head & Neck
Hip & Pelvis
Joints
Leg & Foot
Muscles
Nerve
Nerve issues
Pediatric
Pregnancy
Shoulder & Arm
Spine
Spine & disc
- Herniated disc
- Poor Posture
- Rib pain
- Sacroiliac joint pain
- Scoliosis
- Spinal stenosis
- Stiff neck
- Tailbone pain
- Upper Back Pain
Trauma
Procedures & services
Adjustment
- Gonstead Adjustment
- Spinal manipulation
- Extremity adjustment
- Sacro-Occipital Technique
- Upper Cervical Adjustment
Adjustments
Diagnostics
Occupational Health
Most searched procedures
Advanced Procedures
Devices & supports
- Custom orthotics
- Kinesiology taping
Pediatrics
Prenatal care
Recovery
Rehab & exercise
Soft Tissue
Specialized Care
Spine & disc
Spine Therapy
Therapy
- Active release technique
- Acupressure
- Craniosacral therapy
- Cupping Therapy
- Dry needling
- Electrical muscle stimulation
- Infrared Sauna Therapy
- Muscle Scraping
- Pulsed electromagnetic field therapy
- Red light therapy
- Shockwave Therapy
- Therapeutic Ultrasound
- Wart Removal
Wellness
Procedures Most Often Billed to Medicare
1,062 services · 130 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Chiropractic manipulative treatment, 3-4 spinal regions | Treatment | 98941 |
1,062 | More than most peers in Chiropractor |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other chiropractors in Greenwood 7
Same specialty, same city.
Trained at Sherman College of Straight Chiropractic 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Sherman College of Straight Chiropractic 7
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Chiropractic manipulative treatment, 3-4 spinal regions 8
Providers in SC who bill this service to Medicare most often.
Common questions
What is Dr. Oncken's specialty?
Dr. Oncken is a chiropractor in Greenwood, SC. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Oncken?
Dr. Oncken is listed at 423 Calhoun Ave B, Greenwood, SC 29649. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Oncken?
The number on file is (864) 223-2224. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Oncken's NPI number?
Dr. Oncken's National Provider Identifier is 1447211214. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Oncken's medical education?
Dr. Oncken attended Sherman College of Straight Chiropractic, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Oncken been practicing?
Dr. Oncken has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Oncken known for?
According to Medicare billing data, Dr. Oncken provides treatments such as chiropractic manipulative treatment, 3-4 spinal regions. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Oncken confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Oncken. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.