Medicared For All Logo

Gary Maassen in Saint Louis, Missouri

Home Missouri Saint Louis

Gary Maassen has Internal Medicine as his primary medical specialty. Their primary office is: 5034 Griffin Rd in Saint Louis, Missouri.

They're a part of the: American Multispecialty Group Inc medical group which has around 153 members. You can call their office at 314-843-7333 to schedule an appointment. They also accept the Medicare-approved amount as payment in full. They attended Saint Louis University School Of Medicine and graduated in 1986 (around 38 years of experience). They are not listed as doing telehealth appointments, but this may have changed. It can't hurt to call and check. If anything it may encourage them to make them available if they are not currently.


Gary Maassen Office Phone and Directions

Gary Maassen
American Multispecialty Group Inc
5034 Griffin Rd
Saint Louis, Missouri 63128
314-843-7333


Patient Ratings
Please rate your experience with Gary Maassen below to help others make a more informed decision. Thanks!
Current Rating: Loading...

Phone: 314-843-7333


Enter a starting address:


Healthcare Info for Gary Maassen

Medical School: Saint Louis University School Of Medicine
Graduation Year: 1986
The Primary Medical Specialty for Gary Maassen is listed as: Internal Medicine
Approximate Years of Experience: 38
PAC (PECOS ID)#: 2961538038
NPI #: 1831170968
NPI Created On: 11/07/2005
NPI Last Updated Listed as: 09/24/2012
Primary Taxonomy Code: 207R00000X
License Number:
R7H60
Listed Gender: Male

Insurance, Services, Charges


Forms of insurance accepted by include, but are not limited to:

  • Humana
  • Medicare

They are listed as accepting new patients.

Languages spoken by staff include: English.


Services and Procedures include:

  1. Insertion of needle into vein for collection of blood sample
  2. Blood test, basic group of blood chemicals
  3. Blood test, comprehensive group of blood chemicals
  4. Blood test, lipids (cholesterol and triglycerides)
  5. Manual urinalysis test with examination using microscope
  6. Urine microalbumin (protein) level
  7. Vitamin d-3 level
  8. Creatinine level to test for kidney function or muscle injury
  9. Cyanocobalamin (vitamin b-12) level
  10. Hemoglobin a1c level
  11. Parathormone (parathyroid hormone) level
  12. Blood test, thyroid stimulating hormone (tsh)
  13. Complete blood cell count (red cells, white blood cell, platelets), automated test
  14. Vaccine for influenza for injection into muscle
  15. Routine ekg using at least 12 leads including interpretation and report
  16. Established patient office or other outpatient visit, typically 15 minutes
  17. Established patient office or other outpatient, visit typically 25 minutes
  18. Physician telephone patient service, 11-20 minutes of medical discussion
  19. Administration of influenza virus vaccine
  20. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit

They took part in Medicare's Electronic Health Record Incentive Program which was designed to help move people over to electronic records and improve the systems that were already in place.
They took part in the Medicare Physician Quality Reporting System (PQRS).

Open Payments Data. This can include items to test (Durable Medical Equipment (DME)), Biological, Drug Samples, etc. This data must be reported to CMS.


Payments Total: $17

Number of Payments:: 1

Form of Payment: In-kind items and services

Third party is a Charity:: No

Record ID:: 788727107

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Cardiovascular & Metabolism

Name of Drug #1: XARELTO

Open Associated Drug #1: 50458-580-30


Payments Total: $14

Number of Payments:: 1

Form of Payment: In-kind items and services

Third party is a Charity:: No

Record ID:: 788727109

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Cardiovascular & Metabolism

Name of Drug #1: XARELTO

Open Associated Drug #1: 50458-580-30


Payments Total: $29

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 795421015

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: NEUROSCIENCE

Name of Drug #1: UBRELVY

Open Associated Drug #1: 0023-6501-10


Payments Total: $15

Number of Payments:: 1

Form of Payment: In-kind items and services

Third party is a Charity:: No

Record ID:: 818552443

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Diabetes

Name of Drug #1: TRULICITY

Open Associated Drug #1: 0002-1433-80


Payments Total: $21

Number of Payments:: 1

Form of Payment: In-kind items and services

Third party is a Charity:: No

Record ID:: 819089553

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Diabetes

Name of Drug #1: TRULICITY

Open Associated Drug #1: 0002-1433-80


Payments Total: $13

Number of Payments:: 1

Form of Payment: Cash or cash equivalent

Record ID:: 783453305

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Cardiovascular

Name of Drug #1: ELIQUIS

Open Associated Drug #1: 0003-0894-31


Payments Total: $18

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 810626559

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Obesity

Name of Drug #1: Saxenda

Open Associated Drug #1: 0169-2800-15


Payments Total: $14

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 810896795

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Diabetes

Name of Drug #1: RYBELSUS

Open Associated Drug #1: 0169-4303-13

Drug or Biological: Drug

Product Category #2: Diabetes

Name Of Drug #2:: Ozempic

Associated Drug #2: 0169-4132-12


Payments Total: $17

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 810897037

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Diabetes

Name of Drug #1: Ozempic

Open Associated Drug #1: 0169-4132-12

Drug or Biological: Drug

Product Category #2: Diabetes

Name Of Drug #2:: RYBELSUS

Associated Drug #2: 0169-4303-13


Payments Total: $15

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 810897045

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: Obesity

Name of Drug #1: Wegovy

Open Associated Drug #1: 0169-4525-14


Internal Medicine Professionals in Saint Louis

615 S New Ballas Rd
Saint-louis, MO
Mercy Clinic Adult Critical Care, Llc

11155 Dunn Rd
Saint-louis, MO
Rick Hummel Md Pc

615 S New Ballas Rd
Saint-louis, MO
Mercy Clinic Adult Hospitalists - St. Louis, Llc

3844 S Lindbergh Blvd
Saint-louis, MO
Physician Groups Lc

12680 Olive Blvd
Saint-louis, MO
Mercy Clinic East Communities

615 S New Ballas Rd
Saint-louis, MO
Mercy Clinic Adult Hospitalists - St. Louis, Llc

Providers in American Multispecialty Group Inc

1.Ashley Adams

5034 Griffin Rd
Saint Louis Mo 63128-3418
American Multispecialty Group Inc
Nurse Practitioner

2.Susan Adams

637 Dunn Rd
Hazelwood Mo 63042-1759
American Multispecialty Group Inc
Internal Medicine

3.Kent Adkins Md

12255 De Paul Dr
Bridgeton Mo 63044-2510
American Multispecialty Group Inc
Urology

4.Kent Adkins Md

13303 Tesson Ferry Rd
Saint Louis Mo 63128-4065
American Multispecialty Group Inc
Urology

5.Renee Amato Pa

9930 Watson Rd
Saint Louis Mo 63126-1845
American Multispecialty Group Inc
Physician Assistant

6.Renee Amato Pa

12345 W Bend Dr
Saint Louis Mo 63128-2255
American Multispecialty Group Inc
Physician Assistant

View all 153 members of American Multispecialty Group Inc medical group