> > > > Dr. Timmothy Merrigan, MD
Dr. Timmothy O'Connor Merrigan MD is a male Family Practitioner, has 15 years of experience and practices in Family Medicine and General Practice.
Dr. Timmothy Merrigan has 1 office location.
320 Lennon Ln
Walnut Creek, CA 94598

Phone Number
Locations and availability (1)
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Timmothy Merrigan:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

  • Currently 3 of 4 stars
Patient comments (1)

The overall average patient rating of Dr. Timmothy Merrigan is Good. Dr. Merrigan has been reviewed by 3 patients who have provided 1 comments. The rating is 3 out of 4 stars.

Patient Ratings
Ease of Appointment 4.0
  • Currently 4 of 4 stars
Promptness 3.3
  • Currently 3.3333333333333 of 4 stars
Courteous Staff 3.0
  • Currently 3 of 4 stars
Accurate Diagnosis 3.0
  • Currently 3 of 4 stars
Bedside Manner 3.0
  • Currently 3 of 4 stars
Spends Time with Me 3.0
  • Currently 3 of 4 stars
Follows Up After Visit 3.0
  • Currently 3 of 4 stars

Specialties & Research

Dr. Timmothy Merrigan, MD is board certified in Family Medicine.

  • He has special expertise in 1 area:
  • Flu (Human Influenza)

Education & Awards

Dr. Merrigan graduated from Medical College of Wisconsin, Milwaukee.


Dr. Merrigan has 3 hospital affiliations:

  • John Muir Medical Center, Walnut Creek Campus 
  • John Muir Med Center Walnut Creek Campus 
  • Family & Community Medicine 


  • Spanish

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Additional Information
Where does Dr. Timmothy O. Merrigan practice?
Dr. Timmothy Merrigan practices Family Medicine and General Practice near Walnut Creek, CA.
See Walnut Creek Family Physicians and Walnut Creek General Practitioners.