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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: October 18, 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 Other (2023).

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 CMSOtherGraduated 2023
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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

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.

Medicare Billing Reassignments

2

Medicare enrollment records show Mason Lee reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Total Access Urgent Care, PC
4.6 mi
Urgent Care
9556 MANCHESTER RD
Saint Louis, MO 63119
  • Reassigned Medicare billing, Missouri enrollment
  • 111 clinicians in this Medicare group
NPI 1962684886 (314) 961-2255
Physician Groups Lc
6.7 mi
Multi-Specialty
670 MASON RIDGE CENTER DR STE 300
Saint Louis, MO 63141
  • Reassigned Medicare billing, Missouri enrollment
  • 611 clinicians in this Medicare group
NPI 1285664268 (314) 996-7644

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

Which organizations bill Medicare for Mason Lee's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mason Lee reassigns Medicare benefits to 2 organizations: Total Access Urgent Care, PC (Saint Louis, MO) and Physician Groups Lc (Saint Louis, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mason Lee's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mason Lee accept?

Health plans from UnitedHealthcare list Mason Lee as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

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 2 months 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.