Dr. Michelle Sit
Last updated: Jan 7, 2026

Dr. Michelle Sit

  • Gender: Female
  • Sole propriator: No
  • NPI: 1740269513

Dr. Michelle Sit MD

Rheumatologist

She is located at 1010 Nut Tree Road Suite 100A in Vacaville, CA 95687. Can help patients with the following: Bone Loss, Bursitis, Constipation, Hot Flashes, Spondylolysis, Urethritis. Her National Provider Identifier (NPI) number is 1740269513. Appointment can be made via the phone number (707) 624-8532.

Conditions treated

Dr. Michelle Sit, being an rheumatologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Michelle Sit.

  • Abdominal Pain
  • Acute Pain
  • Amyloidosis
  • Anemia
  • Ankylosing Spondylitis
  • Antiphospholipid Syndrome (APS)
  • Arthritis
  • Asthma
  • Atherosclerosis
  • Bladder Control
  • Bone Loss
  • Bursitis
  • Chest Pain
  • Cholecystitis
  • Chronic Fatigue Syndrome (CFS)
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Claudication
  • Collagen Vascular Disease (CVD)
  • Common Cold
  • Constipation
  • Cystitis
  • Diarrhea
  • Edema
  • Erythema Nodosum
  • Fever
  • Fibromyalgia
  • Gastroesophageal Reflux Disease (GERD)
  • General Care
  • Gout
  • Headache
  • Heart Disease
  • Hiatal Hernia
  • High Blood Pressure
  • Hot Flashes
  • Hyperlipidemia
  • Hypermobility Syndrome
  • Hyponatremia
  • Influenza
  • Inguinal Hernia
  • Low Back Pain
  • Lupus
  • Migraine
  • Muscle Pain
  • Nausea and Vomiting
  • Obesity
  • Osteoarthritis (OA)
  • Osteoporosis
  • Patellofemoral Pain Syndrome (PFS)
  • Peptic Ulcer
  • Polymyalgia Rheumatica (PMR)
  • Polymyositis (PM)
  • Porphyria
  • Prescription Refill
  • Psoriatic Arthritis
  • Raynaud's Phenomenon
  • Reactive Arthritis
  • Rheumatoid Arthritis (RA)
  • Sacroiliac Joint Pain
  • Sarcoidosis
  • Scleroderma
  • Sjogren's Syndrome
  • Spondylolysis
  • Tendinitis
  • Urethritis
  • Urinary Tract Infection (UTI)
  • Vasculitis
  • Weber-Christian Disease

Medicare Enrollment

Dr. Michelle Sit is enrolled to bill Medicare as a Practitioner - Rheumatology .

Bills through: Northbay Physicians Surgery Center, Llc

Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.

Payments received

Drug payment

Genentech $270
Celgene $226
Astellas Pharma $49

Other

Food and Beverage $715

Additional Specialities

  • Internist

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Questions & Answers

Where can you meet with Dr. Michelle Sit?

Dr. Michelle Sit's office is located at 1010 Nut Tree Road Suite 100A in Vacaville, CA 95687.

Does Dr. Michelle Sit accept insurance?

Unfortunately we don't have any information if Dr. Michelle Sit accepts insurance.

What conditions does Dr. Michelle Sit treat?

Dr. Michelle Sit provides treatment for Bone Loss, Bursitis, Constipation, Hot Flashes, Spondylolysis, Urethritis. For the full list see this list.