DR. TIMMOTHY O MERRIGAN M.D.
NPI 1063442945
Family Medicine in Walnut Creek, CA

Q: What is Timmothy Merrigan's NPI number?

The NPI number for Timmothy Merrigan is 1063442945. It was assigned to this individual provider in the NPPES registry on July 4, 2006.

Q: What is Timmothy Merrigan's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Timmothy Merrigan was last updated on February 11, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since July 04, 2006PECOS EnrolledAccepts Medicare Assignment

320 LENNON LN, WALNUT CREEK, CA 94598(924) 906-2326 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Timmothy O Merrigan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. TIMMOTHY O MERRIGAN M.D. (NPI 1063442945) is an individual family medicine provider in Walnut Creek, California, licensed in California (A63055) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Wisconsin (1995).

NPPES Registry Identity

NPI1063442945

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. TIMMOTHY O MERRIGANCredential: M.D.

Location Address320 LENNON LNWalnut Creek, CA 94598-2419

Mailing Address213 Southbrook PlClayton, CA 94517-1035 · (925) 997-0093

Phone(924) 906-2326

Sole ProprietorYes

Medical School CMSMedical College Of WisconsinGraduated 1995

Enumeration DateJuly 4, 2006

Last NPPES UpdateFebruary 11, 2022

✔ NPI 1063442945 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in CA · A63055

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

320 LENNON LN, Walnut Creek, CA 94598

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Other Identifiers 1

Medicaid00A630550CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Timmothy O Merrigan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8123166501

PECOS Enrollment IDI20091104000416

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LINDA MARIE HECKENLIVELY M.S., CCC-SLP

Speech-Language Pathologist