Physician Profile
Karl E. Terwilliger, MD
Unclaimed ProfileAbout Dr. Terwilliger
Karl E. Terwilliger, MD is a healthcare provider in Waterloo, IA specializing in anesthesiology. Karl trained at R Franklin University of Med & Sci/Chicago Medical School, graduating in 1992. According to Medicare claims data, Karl cared for 129 Medicare patients across 132 services. The services billed most often include insertion of artery tube for blood sampling or infusion through skin, insertion of non-tunneled central venous tube for infusion (5 years or older), and insertion of probe in esophagus for heart ultrasound.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (319) 235-3886
- Email not available
Practice Locations
1825 LOGAN AVE
Waterloo, IA 50703
Conditions Commonly Evaluated or Treated
Within Anesthesiology 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
Anesthesia complications
- Anesthesia Allergy or Reaction
- Fear of Waking Up During Surgery
Back & spine
- Arthritis of the spine
- Degenerative disc disease
- Failed back surgery syndrome
- Herniated disc
- Lower back pain
- Neck pain
- Sacroiliac joint pain
- Spinal compression fracture
- Spinal stenosis
- Spondylolisthesis
- Tailbone pain
- Upper Back Pain
Chronic pain
- Chest Wall Pain After Surgery
Facial & jaw pain
- Temporomandibular joint disorder
- Throat nerve pain
General pain
- Cancer pain
- Chronic pain
- Fibromyalgia
- Severe post-op pain
Head & facial pain
- Chronic migraines
- Occipital neuralgia
- Spinal headache
- Trigeminal neuralgia
Headaches
- Cluster Headaches
Joint pain
- Hip Replacement Pain
- Knee pain
- Lateral hip pain and trochanteric bursitis
- Shoulder Pain
Mental health
- Trauma
- Treatment-resistant depression
Muscle pain
- Muscle knots and spasms
Musculoskeletal pain
- Rib pain
Nerve pain
- Abdominal wall nerve pain
- Complex Regional Pain Syndrome
- Foot Numbness and Tingling
- Groin nerve pain after hernia surgery
- Nerve damage after surgery
- Neuropathy
- Outer thigh burning and numbness
- Phantom limb pain
- Pinched nerve
- Piriformis syndrome
- Sciatica
- Shingles pain
- Tarsal Tunnel Syndrome
Pelvic pain
- Chronic pelvic pain
- Pudendal nerve pain
Post-surgery recovery
- Hoarseness and throat pain after surgery
- Nausea After Surgery
Sedation & anesthesia
- Anesthesia anxiety
- History of anesthesia complications
Spine pain
- Torn spinal disc
- Whiplash neck injury
Procedures & services
Ablation
- Hip radiofrequency ablation
Head & facial procedures
- Botox for chronic migraines
- Facial nerve block for headache
- Occipital nerve block
Implants & devices
- Pain pump implant
- Pain pump refill and check
- Peripheral nerve stimulator implant
- Spinal cord stimulator implant
- Spinal cord stimulator trial
Infusion therapies
- Ketamine infusion therapy
Infusion therapy
- Lidocaine Infusion for Chronic Pain
Joint injections
- Joint injection or aspiration
- Ultrasound-guided hip injection
Muscle injections
- Trigger-point injection
Nerve blocks
- Abdominal Nerve Block
- Celiac Plexus Nerve Block
- Ganglion impar block
- Groin nerve block
- Pudendal nerve block
- Superior hypogastric plexus block
Nerve injections
- Celiac plexus block
- Lumbar sympathetic block
- Nerve block
- Rib nerve block
- Shoulder nerve block
- Stellate ganglion block
Nerve procedures
- Knee nerve block and ablation
- Peripheral nerve hydrodissection
- Radiofrequency ablation
Pain relief procedures
- Cryoneurolysis
Regional anesthesia
- Adductor canal block
- Brachial plexus block
- Popliteal nerve block
Sedation
- IV sedation for endoscopy
Sedation & anesthesia
- General anesthesia
- Labor epidural
- Moderate dental sedation
- Pre-surgery anesthesia consult
- Sedation for dental work
- Spinal spinal block
Spine injections
- Epidural steroid injection
- Facet joint injection
- Medial branch block
- Sacroiliac joint injection
- Tailbone epidural injection
Spine procedures
- Blood patch for spinal headache
- Epidural Lysis Of Adhesions
- Interspinous Spacer
- Kyphoplasty
- Mild procedure for spinal stenosis
- Percutaneous disc decompression
- Spinal bone nerve ablation
- Vertebroplasty
Procedures Most Often Billed to Medicare
132 services · 129 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of artery tube for blood sampling or infusion through skin | Procedure | 36620 |
48 | More often than most peers in Anesthesiology |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | Procedure | 36556 |
32 | More often than most peers in Anesthesiology |
| Anesthesia for heart artery bypass grafting on heart-lung machine | Anaesthesia | 00567 |
18 | More often than most peers in Anesthesiology |
| Ultrasonic guidance for needle placement | Imaging | 76942 |
12 | |
| Insertion of probe in esophagus for heart ultrasound | Treatment | 93313 |
22 | More often than most peers in Anesthesiology |
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 anesthesiologists at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 28 related providers in 4 groups
Other anesthesiologists in Waterloo 4
Same specialty, same city.
Trained at R Franklin University of Med & Sci/Chicago Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at R Franklin University of Med & Sci/Chicago Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of artery tube for blood sampling or infusion through skin 8
Providers in IA who bill this service to Medicare most often.
Common questions
What does Dr. Terwilliger specialize in?
Dr. Terwilliger is an anesthesiologist in Waterloo, IA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Anesthesiology”.
NPI registry
Where is Dr. Terwilliger located?
Dr. Terwilliger is listed at 1825 Logan Ave, Waterloo, IA 50703. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Terwilliger's phone number?
The number on file is (319) 235-3886. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Terwilliger's NPI number?
Dr. Terwilliger's National Provider Identifier is 1669426060. 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
Where did Dr. Terwilliger go to medical school?
Dr. Terwilliger attended R Franklin University of Med & Sci/Chicago Medical School, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Terwilliger been practicing?
Dr. Terwilliger has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Terwilliger do most often?
According to Medicare billing data, Dr. Terwilliger performs procedures including insertion of artery tube for blood sampling or infusion through skin and insertion of non-tunneled central venous tube for infusion; reads or performs imaging such as ultrasonic guidance for needle placement; provides treatments such as insertion of probe in esophagus for heart ultrasound and anesthesia for heart artery bypass grafting on heart-lung machine. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Terwilliger confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Terwilliger. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.