41 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Lewis, Internist in Pasadena, CA?
Dr. Nathan Lewis, MD is an Internist, who primarily practices in Pasadena, CA. He has been practicing for over 41 years and is board certified by the American Board of Internal Medicine. Dr. Lewis graduated from Loma Linda University School of Medicine and completed his residency at White Mem Med Ctr, Internal Medicine. Dr. Lewis is fluent in English and Spanish, and is currently seeing new patients. Dr. Lewis’s practice accepts Cigna, Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Lewis’s office at (626) 796-8181.
Where did Dr. Lewis go to medical school and complete their residency?
Residency: White Mem Med Ctr, Internal Medicine | White Memorial Medical Center Program
Medical School: Loma Linda University School of Medicine
Is Dr. Lewis board certified in Internist?
Yes, Dr. Nathan Lewis, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Lewis speak?
Dr. Lewis and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Lewis treat?
As a Internist, Dr. Lewis diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Lewis. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- High Cholesterol
- Cholesterol
- Triglycerides
- Hyperlipidemia
- High lipids
- Dyslipidemia
ICD-10 Codes:
- E785: Hyperlipidemia, unspecified
Also known as:
- Type 2 Diabetes
- Type 2 Diabetes with High Blood Sugar
- Type 2 Diabetes with Chronic Kidney Disease
- Diabetes Complicationss
- Diabetes Type 2
- Type 2 diabetes
- Hyperglycemia
- Diabetic Kidney Problems
- Diabetes Mellitus Complications
- Diabetes Related Health Problems
- Advanced Diabetes
- Diabetes Mellitus Type 2
- Adult-Onset Diabetes
- Non-Insulin Dependent Diabetes
- Diabetic Hyperglycemia
- High Blood Glucose
- High Sugar Levels
- Diabetic Chronic Kidney Disease
- Long-term Kidney Failure from Type 2 Diabetes
- Type 2 Diabetes End-Stage Renal Disease
ICD-10 Codes:
- E1169: Type 2 diabetes mellitus with other specified complication
- E119: Type 2 diabetes mellitus without complications
- E1165: Type 2 diabetes mellitus with hyperglycemia
- E1122: Type 2 diabetes mellitus with diabetic chronic kidney disease
Also known as:
- Severe Obesity
- Obesity
- Overweight
- Helping Your Child Who Is Overweight
- Take Charge of Your Health: A Guide for Teenagers
- Understanding Adult Overweight & Obesity
- Body Weight
- Morbid Obesity
- Extreme Obesity
- Class 3 Obesity
- Excess Weight
- Being Overweight
- High BMI
- High BMI (Overweight)
- Pre-Obesity
ICD-10 Codes:
- E6601: Morbid (severe) obesity due to excess calories
- E669: Obesity, unspecified
- E663: Overweight
Also known as:
- Prediabetes
- Insulin Resistance & Prediabetes
- Borderline diabetes
- Insulin resistance
- High blood sugar (not yet diabetes)
ICD-10 Codes:
- R7303: Prediabetes
Also known as:
- Chronic Respiratory Failure
- Acute Respiratory Failure
- Respiratory Failure
- Long-term lung failure
- Ongoing breathing failure
- Chronic lung insufficiency
- Sudden lung failure
- Acute breathing failure
- Rapid onset respiratory failure
ICD-10 Codes:
- J9610: Chronic respiratory failure, unspecified whether with hypoxia or hypercapnia
- J9600: Acute respiratory failure, unspecified whether with hypoxia or hypercapnia
Also known as:
- Brain disease (encephalopathy)
- Brain Disease
- Brain disorder
- Brain dysfunction
- Encephalopathy
ICD-10 Codes:
- G9340: Encephalopathy, unspecified
Also known as:
- One-Sided Weakness or Paralysis After Ischemic Stroke
- Paralysis
- Stroke
- Post-ischemic stroke hemiplegia
- Partial paralysis from ischemic stroke
- Ischemic stroke-related body weakness
- Hemiparesis after brain infarction
ICD-10 Codes:
- I69354: Hemiplegia and hemiparesis following cerebral infarction affecting left non-dominant side
Also known as:
- Urinary Tract Infection
- UTI
- Bladder infection
- Kidney infection
- Urine infection
ICD-10 Codes:
- N390: Urinary tract infection, site not specified
Also known as:
- Hypothyroidism
- Congenital hypothyroidism
- Hypothyroidism (Underactive Thyroid)
- Underactive Thyroid
- Low Thyroid Function
ICD-10 Codes:
- E039: Hypothyroidism, unspecified
Also known as:
- Other Specific Abnormal Blood Chemistry Results
- Blood
- Specified Blood Chemistry Imbalance
- Unusual Blood Chemistry Findings
- Specific Blood Panel Abnormalities
ICD-10 Codes:
- R7989: Other specified abnormal findings of blood chemistry
Also known as:
- Pinched Nerve in Lower Back
- Back Pain
- Peripheral Nerve Disorder
- Lumbar Radiculopathy
- Lower Back Nerve Compression
- Compressed Nerve in Lower Back
ICD-10 Codes:
- M5416: Radiculopathy, lumbar region
Also known as:
- Chronic Kidney Disease, Stage 3a
- Chronic Kidney Disease
- Chronic Kidney Disease (CKD)
- CKD Stage 3a
- Moderate Chronic Kidney Disease
ICD-10 Codes:
- N1831: Chronic kidney disease, stage 3a
Also known as:
- COPD
- Chronic Obstructive Pulmonary Disease
- Chronic Lung Disease
- Emphysema and Chronic Bronchitis
ICD-10 Codes:
- J449: Chronic obstructive pulmonary disease, unspecified
Which procedures does Dr. Lewis perform as a Internist?
As a Internist, procedures performed by an Dr. Nathan Lewis may include:
- Ambulatory Care Consultation
- Annual Check Up
- Annual Physical
- Aromatherapy
- Bladder and Bowel Management
- Blood Pressure Testing
- Bowel and Bladder Management
- Certified Medical Examination for Commercial Driver / Vessel Master
For detailed information, please contact Dr. Lewis' office.
Does Dr. Lewis accept my insurance?
Dr. Lewis accepts most major insurance plans. Important: Please call our office at (626) 796-8181 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Lewis accept in Pasadena, CA?
Dr. Lewis in Pasadena, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Shield of California
Centene
City of Los Angeles
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Humana
Medicare
OptumRx
UnitedHealthcare
View All Insurances
Where is Dr. Lewis' office located?
Dr. Nathan Lewis' Primary Practice
675 S Arroyo Pkwy Ste 310
Pasadena, CA 91105
(626) 796-8181
What is Dr. Lewis's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Lewis's National Provider Identifier (NPI) number is 1912923004.
What common questions do patients ask about Dr. Lewis?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Lewis
What is Dr. Nathan Lewis's specialty?
Dr. Lewis is a Internist near Pasadena, CA.
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Contact Dr. Lewis to book an appointment today.Is this Dr. Nathan Lewis affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Lewis is affiliated with Huntington Hospital (pasadena, Ca) which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Internist?
Explore Internist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Nathan Lewis accepting new patients in Pasadena, CA?
Yes, Dr. Nathan Lewis is accepting new patients at this time.
Does Dr. Nathan Lewis offer online booking?
Please contact Dr. Lewis's office at (626) 796-8181 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Nathan Lewis?
Please contact Dr. Lewis's office at (626) 796-8181 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Nathan Lewis have?
Dr. Nathan Lewis is certified by the American Board of Internal Medicine.
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