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

MASON CHAN MD
NPI 1275282725
Psychiatry & Neurology - Psychiatry in Tucson, AZ

Q: What is Mason Chan's NPI number?

The NPI number for Mason Chan is 1275282725. It was assigned to this individual provider in the NPPES registry on March 22, 2022.

Q: What is Mason Chan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Mason Chan was last updated on August 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 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.

Active since March 22, 2022PECOS Enrolled

4175 S ALAMO AVE, TUCSON, AZ 85707(520) 228-2778 Get Directions Write a Review

NPPES record last updated: August 4, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Aug 4, 2026, Jul 29, 2026, Aug 24, 2023 and 1 more (4 updates tracked since 2022).

On this page

About Mason Chan Md NPPES

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

MASON CHAN MD (NPI 1275282725) is an individual psychiatry provider in Tucson, Arizona, licensed in Virginia (0101279440) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275282725

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameMASON CHANCredential: MD

Location Address4175 S ALAMO AVETucson, AZ 85707-4402

Mailing Address4175 S Alamo AveDavis Monthan Afb, AZ 85707-4402

Phone(520) 228-2778

Sole ProprietorNo

Enumeration DateMarch 22, 2022

Last NPPES UpdateAugust 4, 20264 updates tracked since enumeration

NPPES CertifiedAugust 4, 2026

✔ NPI 1275282725 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in VA · 0101279440

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Also ListedGeneral PracticeTaxonomy 208D00000X · License 0101279440 (VA)

4175 S ALAMO AVE, Tucson, AZ 85707

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mason Chan Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85707 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

$168.60 typical visit price

range $55.44 – $168.60

Typical copayment $42.15 (range $13.86 – $42.15)

Most-billed visit code 99205

Established Patient

$69.24 typical visit price

range $17.72 – $137.41

Typical copayment $17.31 (range $4.43 – $34.35)

Most-billed visit code 99213

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.

DR. JACOB MACK DMD

Dentist (General Practice)

4175 S ALAMO AVE
DAVIS MONTHAN AFB, AZ 85707

Pima County (719) 333-5192

NANCY CHRISTY N.P.

Nurse Practitioner (Women's Health)

4175 S ALAMO AVE, BUILDING 400
DM AFB, AZ 85707

Pima County (520) 228-2665

DR. ELIZABETH ROSE PHILLIPS PMHNP-BC

Nurse Practitioner (Psychiatric/Mental Health)

4175 S ALAMO AVE
TUCSON, AZ 85707

Pima County (520) 228-4357

MICHELLE MCLOUGHLIN LCSW

Social Worker (Clinical)

4175 S ALAMO AVE
TUCSON, AZ 85707

Pima County (520) 228-2104

DR. ALLAN CURTISS BUSHNELL JR. MD, MSPH

Preventive Medicine (Preventive Medicine/Occupational Environmental Medicine)

4175 S ALAMO AVE, DAVIS-MONTHAN AIR FORCE BASE
TUCSON, AZ 85707

Pima County (520) 228-2720

DR. CARL WAYNE DASSE MD

Family Medicine

4175 S ALAMO AVE
DM AFB, AZ 85707

Pima County (520) 228-2600

DR. NICHOLAS ROBERT EINBENDER D.M.D.

Dentist (General Practice)

4175 S ALAMO AVE
TUCSON, AZ 85707

Pima County (520) 228-2778

AMANDA COOK DO

Pediatrics

4175 S ALAMO AVE
DAVIS-MONTHAN AFB, AZ 85707

Pima County (520) 228-2778

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 Mason Chan's NPI number?

The NPI number for Mason Chan is 1275282725. It was assigned to this individual provider in the NPPES registry on March 22, 2022.

Where is Mason Chan located?

Mason Chan practices at 4175 S Alamo Ave, Tucson, AZ 85707. The listed phone number is (520) 228-2778.

What is Mason Chan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Mason Chan enrolled in Medicare?

Yes. Mason Chan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mason Chan was last updated on August 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 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.