Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

HEATHER MUIR PHD
NPI 1225405855
Psychologist in San Francisco, CA

Active since August 31, 2015PECOS Enrolled
1663 MISSION ST., SUITE 250, SAN FRANCISCO, CA 94103(415) 386-6600 Get Directions Write a Review

NPPES record last updated: July 17, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 17, 2026, Jan 16, 2026, Nov 15, 2024 and 1 more (4 updates tracked since 2023).

About Heather Muir Phd NPPES

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

HEATHER MUIR PHD (NPI 1225405855) is an individual psychologist in San Francisco, California and active in the NPI registry since August 2015. She is enrolled in Medicare PECOS and maintains a secondary practice location in Alameda.

NPPES Registry Identity

NPI1225405855
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameHEATHER MUIRCredential: PHD
Location Address1663 MISSION ST., SUITE 250San Francisco, CA 94103
Mailing Address1448 18th AveSan Francisco, CA 94122-3409 · (860) 705-2821
Sole ProprietorYes
Enumeration DateAugust 31, 2015
Last NPPES UpdateJuly 17, 20264 updates tracked since enumeration
NPPES CertifiedJuly 17, 2026
NPI 1225405855 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
1663 MISSION ST., San Francisco, CA 94103

Secondary Practice Location 1

Location 11005 Atlantic AveAlameda, CA 94501-1148 · Phone (860) 705-2821

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Heather Muir Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Heather Muir's NPI number?

The NPI number for Heather Muir is 1225405855. It was assigned to this individual provider in the NPPES registry on August 31, 2015.

Where is Heather Muir located?

Heather Muir practices at 1663 Mission St. Suite 250, San Francisco, CA 94103. The listed phone number is (415) 386-6600.

What is Heather Muir's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Heather Muir enrolled in Medicare?

Yes. Heather Muir is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Heather Muir was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.