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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

Patient comments (1)

The overall average patient rating of Dr. Timmothy Merrigan is Good. Dr. Merrigan has been reviewed by 6 patients who have provided 1 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 4.1
Courteous Staff 3.7
Accurate Diagnosis 3.7
Bedside Manner 3.7
Spends Time with Me 3.7
Follows Up After Visit 3.7

Specialties & Research

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

Education & Awards

Dr. Merrigan graduated from Medical College of Wisconsin, Milwaukee. He has 2 awards.

Bridges to Excellence Recognition
Physician Office Systems Recognition (2015 - 2017)
Level III
NCQA Physician Practice Connections - Patient Centered Medical Home (2015 - 2018)


Dr. Merrigan has 3 hospital affiliations:

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


  • Spanish

> > > > Dr. Timmothy Merrigan, MD

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Additional Information
Dr. Timmothy O'Connor Merrigan MD is a male Family Practitioner, has 17 years of experience and practices in Family Medicine.
Where does Dr. Timmothy O. Merrigan practice?
Dr. Timmothy Merrigan has 1 office location.
Dr. Timmothy Merrigan practices Family Medicine near Walnut Creek, CA.
See Walnut Creek Family Physicians.