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

MASON JOSEPH LEE DO
NPI 1053007955
Family Medicine in Saint Louis, MO

Active since April 13, 2023PECOS Enrolled
3630 S GEYER RD STE 320, SAINT LOUIS, MO 63127(314) 626-2000(314) 626-2001 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 5, 2026, Jun 14, 2023, Apr 13, 2023 (3 updates tracked since 2023).

About Mason Joseph Lee Do NPPES

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

MASON JOSEPH LEE DO (NPI 1053007955) is an individual family medicine provider in Saint Louis, Missouri, licensed in Missouri (2023019906) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, maintains a secondary practice location in Saint Louis, and is a graduate of University Of Missouri, Kansas City, School Of Medicine (2024).

NPPES Registry Identity

NPI1053007955
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameMASON JOSEPH LEECredential: DO
Location Address3630 S GEYER RD STE 320Saint Louis, MO 63127-1234
Mailing AddressPo Box 959354Saint Louis, MO 63195-9354 · (314) 626-2000 · Fax (314) 626-2001
Phone(314) 626-2000
Fax(314) 626-2001
Sole ProprietorYes
Medical School CMSUniversity Of Missouri, Kansas City, School Of MedicineGraduated 2024
Enumeration DateApril 13, 2023
Last NPPES UpdateAugust 5, 20263 updates tracked since enumeration
NPPES CertifiedAugust 5, 2026
✔ NPI 1053007955 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in MO · 2023019906
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.
3630 S GEYER RD STE 320, Saint Louis, MO 63127
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Secondary Practice Location 1

Location 112680 Olive Blvd Ste 300Saint Louis, MO 63141-6322 · Phone (314) 251-8888 · Fax (314) 251-8889

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 Joseph Lee Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2860859774
PECOS Enrollment IDI20260618000268
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 63127 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
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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 2

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

JACK ANTHONY GALBRAITH MD
Family Medicine
3630 S GEYER RD STE 320
SAINT LOUIS, MO 63127
St. Louis County (314) 996-4900
DANA CLAIRE GALBRAITH M.D.
Family Medicine
3630 S GEYER RD STE 320
SAINT LOUIS, MO 63127
St. Louis County (314) 996-4900

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 Lee's NPI number?

The NPI number for Mason Lee is 1053007955. It was assigned to this individual provider in the NPPES registry on April 13, 2023.

Where is Mason Lee located?

Mason Lee practices at 3630 S Geyer Rd Ste 320, Saint Louis, MO 63127. The listed phone number is (314) 626-2000.

What is Mason Lee's specialty?

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

Is Mason Lee enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for Mason Lee was last updated on August 5, 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.