Physician Profile
Samuel ERNEST WILLIAM Johnsen, M.D.
Unclaimed ProfileAbout Dr. Johnsen
Samuel ERNEST WILLIAM Johnsen, M.D. practices internal medicine in Lahaina, HI. According to Medicare claims data, Samuel cared for 432 Medicare patients across 822 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, 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', and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
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.
Contact Information
- (808) 214-5985
- Email not available
Practice Locations
180 DICKENSON ST STE 103
Lahaina, HI 96761
Conditions Commonly Evaluated or Treated
Within Internal Medicine 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
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
- High blood pressure
- High cholesterol
Digestive and liver
- Acid reflux
- Fatty liver disease
- IBS
Endocrine, blood, and bone
- Gout
Infectious disease
- Shingles
Kidney and urinary
- Chronic kidney disease
- Enlarged prostate
Respiratory
- Acute bronchitis
- Asthma
- COPD
Blood & Circulation
- Blood clots
Blood disorders
- Anemia
Brain & Nerves
- Alzheimer's disease
Brain and nerves
- Vertigo
Cardiac and vascular
- AFib
Digestive
- Diverticulitis
Heart & Circulation
- Heart disease
Infections
- Impetigo
Kidney & Bladder
- Overactive Bladder and Leakage
Lungs & Breathing
- Sleep apnea
Mental Health
- Generalized anxiety disorder
- Insomnia and Sleep Problems
Neurologic and behavioral
- Depression
- Migraines
Pain
- Back pain
Rheumatologic and pain
- Osteoarthritis
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
- EKG
- Spirometry
Bones & Joints
- Trigger Point Injections
Brain and nerves
- Epley Maneuver
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
- Endoscopy
Exams & Consultations
- Pre-Op Clearance Exam
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
- Tetanus shot
Lab tests
- Urinalysis
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
- Ingrown toenail removal
- Suture removal
Office procedures
- Cryotherapy for skin lesions
- Earwax removal
- Incision and drainage of an abscess
- Skin biopsy
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
- Knee Joint Injection
Preventive & Routine Care
- Smoking cessation counseling
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
822 services · 432 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
17 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
15 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
298 |
| 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' | Billing code | G2211 |
242 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
225 |
| Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) | Lab test | 87811 |
13 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
12 |
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.
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 — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 8
Providers in HI who bill this service to Medicare most often.
Common questions
What is Samuel ERNEST WILLIAM Johnsen's specialty?
Samuel ERNEST WILLIAM Johnsen is an internist in Lahaina, HI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where can I find Samuel ERNEST WILLIAM Johnsen?
Samuel ERNEST WILLIAM Johnsen is listed at 180 Dickenson St Ste 103, Lahaina, HI 96761. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Samuel ERNEST WILLIAM Johnsen?
The number on file is (808) 214-5985. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Samuel ERNEST WILLIAM Johnsen's NPI number?
Samuel ERNEST WILLIAM Johnsen's National Provider Identifier is 1669491858. 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 Samuel ERNEST WILLIAM Johnsen's education?
Samuel ERNEST WILLIAM Johnsen attended Other, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Samuel ERNEST WILLIAM Johnsen been practicing?
Samuel ERNEST WILLIAM Johnsen has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What is Samuel ERNEST WILLIAM Johnsen known for?
According to Medicare billing data, Samuel ERNEST WILLIAM Johnsen provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Samuel ERNEST WILLIAM Johnsen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Samuel ERNEST WILLIAM Johnsen. 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.