Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Anthony Mark Masi, MD

Individual provider Pulmonary Disease Physician · NPI 1902884844

Dr. Anthony Mark Masi, MD is a Sleep Medicine in Ballwin, Missouri. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1987, 39 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
39
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
MO
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

13975 Manchester Rd Ste 7
Ballwin, MO 63011-4500
Phone: (636) 391-1222
Fax: (636) 333-1259
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sleep Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0012X · Licence R3P21 (MO)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence R3P21 (MO)

Record details

NPI number1902884844
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 31, 2005
Last updated in NPPESJune 6, 2012
Mailing address13975 Manchester Rd, Suite 7, Ballwin, MO 63011-4500

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtySLEEP MEDICINE
Also practisesPULMONARY DISEASE
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1987 (39 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services