GARY MAASSEN , M.D.

Name: GARY MAASSEN , M.D.
Telephone: 3148437333

Location: 5034 GRIFFIN RD, SAINT LOUIS, MO, 63128

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Languages: English

Data Sources & Verification

NPI 1831170968 Medicare · CMS Confirmed M.D. Male provider

Data sourced from NPI Registry & CMS. Learn more ↗

Medicare Billing & Pricing 2023 data · 1,182 services billed

Insertion of needle into vein for collection of blood sample · office

$16 $8

Established patient office or other outpatient visit, 30-39 minutes · office

$162 $78

Blood test, basic group of blood chemicals (calcium, total) · office

$41 $8

Blood test, lipids (cholesterol and triglycerides) · office

$82 $13

Hemoglobin a1c level · office

$62 $10

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count · office

$36 $8

Provider charge · Medicare pays CMS Medicare Part B ↗

GARY MAASSEN , M.D. offers you comprehensive inpatient and outpatient medical services across multiple specialties in Saint Louis, Missouri, United States.

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Frequently Asked Questions about GARY MAASSEN , M.D.

Where is the GARY MAASSEN , M.D. situated at?

GARY MAASSEN , M.D. is situated at 5034 GRIFFIN RD, SAINT LOUIS, MO, 63128.

Does GARY MAASSEN , M.D. accept Medicare?

Yes, GARY MAASSEN , M.D. is confirmed to accept Medicare based on CMS data. Contact them to confirm your specific Medicare plan is covered.

Is GARY MAASSEN , M.D. accepting new patients?

Please contact GARY MAASSEN , M.D. directly to confirm whether they are currently accepting new patients. You can call them or use the booking button on this page.

How can I book an appointment at GARY MAASSEN , M.D.?

You can book an appointment by clicking the "Book Appointment" button on this page or by calling the provider directly.

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Information last updated: June 30, 2026

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