Dr. Anthony Mark Masi, MD
- Medicare services, 2024
- 504
- Medicare patients, 2024
- 426
- Part D claims, 2024
- 725
- Industry payments
- $1,504
- Affiliated sites
- 1
- Practice address
- 13975 Manchester Rd, Manchester, MO 63011-4500
- Practice phone
- Call (314) 821-1222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lung & Sleep Medicine, Inc.
Physician office · Manchester, Missouri
Find Dr. Masi's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Anthony Mark Masi is a sleep medicine (internal medicine) physician in Ballwin, Missouri
Dr. Masi practices at Lung & Sleep Medicine, Inc. in Manchester, Missouri.
Dr. Masi's NPI, 1902884844, was assigned on December 31, 2005. Dr. Masi graduated from University of Illinois College of Medicine - Chicago in 1987. Dr. Masi holds Missouri license R3P21.
- NPI
- 1902884844NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799789582
- NPI enumeration date
- December 31, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 821-1222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Anthony Mark Masi practices at Lung & Sleep Medicine, Inc. in Manchester, Missouri
Dr. Masi's primary practice is Lung & Sleep Medicine, Inc., at 13975 Manchester Rd, Manchester, MO 63011-4500. The practice phone is (314) 821-1222.
- Lung & Sleep Medicine, Inc.13975 Manchester Rd, Manchester, MO 63011-4500Phone(314) 821-1222
Source: Dmand AI Affiliation Data
Dr. Anthony Mark Masi is affiliated with 1 site of care
Dr. Masi's primary practice is Lung & Sleep Medicine, Inc. in Manchester, Missouri.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Anthony Mark Masi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Masi practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lung & Sleep Medicine, Inc. | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Anthony Mark Masi is one of 15 sleep medicine (internal medicine) physicians in Missouri
Internal medicine is Dr. Masi's primary specialty in the NPI Registry, under taxonomy code 207RS0012X. The record also lists sleep medicine. Dr. Masi is board certified in sleep medicine by the American Board of Internal Medicine. Dmand AI has Dr. Masi's licenses on file in 3 states: Missouri, Illinois and Wisconsin.
Specialties and state licenses
- Sleep medicine (internal medicine), MissouriPrimary
- Illinois license
- Wisconsin license
Sleep medicine (internal medicine) physicians near Dr. Masi
Counts of sleep medicine (internal medicine) physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Anthony Mark Masi billed Medicare for 504 services in 2024
CMS data shows 504 Medicare services from Dr. Masi across 4 procedure codes in 2024, all of them office visits, for 426 Medicare patients. Medicare paid $33,592 for them. Every service was in an office.
Dr. Masi's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5112024: 5041%
Dr. Masi compared with the Missouri median for sleep medicine (internal medicine) physicians, 2024
- Dr. Masi
- Missouri median
- Medicare services
- 504vs 44613% above
- Medicare patients
- 426vs 29047% above
- Part D claims
- 662vs 49235% above
Medians across 14 sleep medicine (internal medicine) physicians in Missouri with Dmand AI profiles that report each measure.
Dr. Masi's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Masi?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Masi and other sleep medicine (internal medicine) physicians in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Anthony Mark Masi treated 426 Medicare patients in 2024, average age 73
CMS counts 426 Medicare patients who saw Dr. Masi in 2024. The largest group is 65 to 74, with 259 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 3% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Masi's median patient age at 68, with 36% women.
Dr. Masi's Medicare patients by age, 2024
Dr. Masi's Medicare patients by sex, 2024
- Women14835%
- Men27865%
Chronic conditions among Dr. Masi's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes34%
- Mood disorders30%
- Depression29%
- Ischemic heart disease28%
- Anxiety26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Masi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women36%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Anthony Mark Masi wrote 725 Medicare Part D claims in 2024
In 2024, Dr. Masi wrote 725 Medicare Part D claims for 135 patients. 95% of them were for generic drugs. CMS names the drug for 662 of them, across 13 drugs with 11 or more claims each, at $24,114 in total drug cost. In 2023, CMS named 545 claims across 12 drugs.
Dr. Masi's Part D claims by kind of drug, 2024
- Generic688 claims95%
- Brand-name37 claims5%
Dr. Masi's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Masi's Part D claims, 2024
- Antipsychotics, patients 65 and over6%42 of 725 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5452024: 66221%
Drugs named by CMS: 13 in 2024, 12 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Anthony Mark Masi takes part in Medicare
Dr. Masi accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Anthony Mark Masi received $1,504 in industry payments from 2019 to 2025
CMS Open Payments shows 50 general payments to Dr. Masi from 10 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 80% of the total. Jazz Pharmaceuticals Inc. paid the most, $467.
General payments to Dr. Masi by program year, 2019 to 2025
General payments to Dr. Masi by kind, 2019 to 2025
- Food and beverage$1,20480%
- Consulting fees$30020%
Companies that paid Dr. Masi the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Anthony Mark Masi has 1 award and honors on record
Dmand AI lists 1 award for Dr. Masi, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Masi
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Anthony Mark Masi graduated from University of Illinois College of Medicine - Chicago
Dr. Masi graduated from University of Illinois College of Medicine - Chicago in 1987.
- Medical school
- Board certified in sleep medicine
Source: Dmand AI Professional Profile Data
Dr. Anthony Mark Masi accepts plans from 11 insurance carriers
Dr. Masi is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- Regence Health Plans
- Arkansas Blue Cross and Blue Shield
- +3 more carriersWith a free account
Plan types Dr. Masi accepts, by number of carriers
- Medicare9
- PPO9
- HMO3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Anthony Mark Masi's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Anthony Mark Masi
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Anthony Mark Masi's NPI number?
Dr. Anthony Mark Masi's NPI number is 1902884844. It was assigned on December 31, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Anthony Mark Masi?
Dr. Anthony Mark Masi is a sleep medicine (internal medicine) physician in Ballwin, Missouri. The primary specialty in the NPI Registry is Sleep Medicine (Internal Medicine) Physician (taxonomy code 207RS0012X).
Where does Dr. Anthony Mark Masi practice?
Dr. Masi practices at 13975 Manchester Rd, Manchester, MO 63011-4500. Dr. Masi's primary practice is Lung & Sleep Medicine, Inc. in Manchester, Missouri.
What is Dr. Anthony Mark Masi's office phone number?
The practice phone on file for Dr. Masi is (314) 821-1222.
What is Dr. Anthony Mark Masi's medical license number?
Dr. Masi holds Missouri license R3P21, one of the licenses on file in 3 states.
Which states has Dr. Anthony Mark Masi been licensed in?
Dmand AI has state licenses on file for Dr. Masi in Missouri (1991 to 2026), Illinois (1993 to 2026) and Wisconsin (1988 to 1991).
Does Dr. Anthony Mark Masi accept Medicare?
Yes. CMS data shows Dr. Masi billed Medicare for 504 services in 2024, and Dr. Masi accepts Medicare assignment.
How many Medicare patients does Dr. Anthony Mark Masi see?
CMS counts 426 Medicare patients who saw Dr. Masi in 2024, with an average age of 73.
Is Dr. Anthony Mark Masi board certified?
Yes. Dr. Masi is board certified in sleep medicine by the American Board of Internal Medicine.
What services does Dr. Anthony Mark Masi bill to Medicare?
In 2024, Dr. Masi's most billed Medicare services were office visit, established patient (99213), office visit, new patient (99203) and office visit, established patient (99214).
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Where did Dr. Anthony Mark Masi go to medical school?
Dr. Masi graduated from University of Illinois College of Medicine - Chicago in 1987.
What drugs does Dr. Anthony Mark Masi prescribe most?
In 2024 Medicare Part D data, Dr. Masi's most prescribed drugs by claims were Trazodone HCl, Zolpidem Tartrate and Clonazepam.
Has Dr. Anthony Mark Masi received payments from drug or device companies?
CMS Open Payments shows $1,504 in general payments to Dr. Masi from 10 companies from 2019 to 2025. The largest total came from Jazz Pharmaceuticals Inc.
How long has Dr. Anthony Mark Masi been practicing?
Dr. Masi graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Anthony Mark Masi accept?
Dr. Masi is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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