Mary M. Masterson, PA
- Medicare patients, 2024
- 93
- Part D claims, 2024
- 38
- MIPS score, 2024
- 83
- Hospital affiliations
- 1
- Industry payments
- $117
- Practice address
- 4940 Eastern Avenue, Baltimore, MD 21224
- Practice phone
- Call (410) 550-0123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Mary Masterson'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.
Mary M. Masterson is a physician assistant in Baltimore, Maryland
Mary Masterson practices at Johns Hopkins Bayview Medical Center in Baltimore, Maryland, part of Johns Hopkins Health System.
Mary Masterson's NPI, 1982654893, was assigned on May 11, 2006. Mary Masterson holds Maryland license C01920.
- NPI
- 1982654893NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769485838
- NPI enumeration date
- May 11, 2006
- NPI status
- Active
- Practice phone
- (410) 550-0123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Mary M. Masterson practices at Johns Hopkins Bayview Medical Center in Baltimore, Maryland
Mary Masterson's primary practice is Johns Hopkins Bayview Medical Center, at 4940 Eastern Avenue, Baltimore, MD 21224 in Baltimore City. The practice phone is (410) 550-0123.
- Johns Hopkins Bayview Medical Center4940 Eastern Avenue, Baltimore, MD 21224 · Baltimore CityPhone(410) 550-0123
Source: Dmand AI Affiliation Data
Mary M. Masterson is affiliated with 1 site of care and 3 medical groups
Mary Masterson's primary practice is Johns Hopkins Bayview Medical Center in Baltimore, Maryland, part of Johns Hopkins Health System. The medical group on file is Johns Hopkins University. Dmand AI also links Mary Masterson to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mary M. Masterson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Masterson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Johns Hopkins Bayview Medical Center | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Johns Hopkins Health System and 6.2K+ hospitals, with verified contacts in the same login.
Mary M. Masterson is one of 2,452 physician assistants in Maryland
Physician assistant is Mary Masterson's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Mary Masterson is licensed in Maryland.
Specialties and state licenses
- Physician assistant, MarylandPrimary
Physician assistants near Mary Masterson
Counts of physician assistants 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
Mary M. Masterson treated 93 Medicare patients in 2024, average age 72
CMS counts 93 Medicare patients who saw Mary Masterson in 2024. The largest group is 65 to 74, with 33 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.92, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Mary Masterson's median patient age at 47, with 57% women.
Mary Masterson's Medicare patients by age, 2024
Mary Masterson's Medicare patients by sex, 2024
- Women5559%
- Men3841%
Chronic conditions among Mary Masterson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Mood disorders53%
- Diabetes45%
- Anxiety43%
- Ischemic heart disease41%
- Depression39%
Share of Medicare patients with each condition. A patient can have several.
Mary Masterson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women57%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary M. Masterson wrote 38 Medicare Part D claims in 2024
In 2024, Mary Masterson wrote 38 Medicare Part D claims for 23 patients. 97% of them were for generic drugs.
Mary Masterson's Part D claims by kind of drug, 2024
- Generic37 claims97%
- Brand-name and other1 claims3%
Drug classes CMS tracks in Mary Masterson's Part D claims, 2024
- Antibiotics42%16 of 38 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mary M. Masterson scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Mary Masterson for performance year 2024, reported as part of a group.
Mary Masterson's MIPS scores, performance year 2024
- 83of 100Final score
- 73.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Mary M. Masterson received $117 in industry payments in 2025
CMS Open Payments shows 1 general payment to Mary Masterson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. ARS Pharmaceuticals Operations, Inc. paid the most, $117.
Companies that paid Mary Masterson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mary M. Masterson'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 DataDmand AI Org Hierarchy Data |
| 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 (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Mary M. Masterson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mary M. Masterson's NPI number?
Mary M. Masterson's NPI number is 1982654893. It was assigned on May 11, 2006, and it is active in the NPI Registry.
What does Mary M. Masterson specialize in?
Mary M. Masterson is a physician assistant in Baltimore, Maryland. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Mary M. Masterson practice?
Mary Masterson practices at 4940 Eastern Avenue, Baltimore, MD 21224. Mary Masterson's primary practice is Johns Hopkins Bayview Medical Center in Baltimore, Maryland, part of Johns Hopkins Health System. Dmand AI also links Mary Masterson to 2 medical groups.
What is Mary M. Masterson's office phone number?
The practice phone on file for Mary Masterson is (410) 550-0123.
What is Mary M. Masterson's medical license number?
Mary Masterson holds Maryland license C01920.
Which hospitals is Mary M. Masterson affiliated with?
Mary Masterson practices at Johns Hopkins Bayview Medical Center in Baltimore, Maryland.
What medical group is Mary M. Masterson part of?
Mary Masterson is linked to Johns Hopkins University. Dmand AI links Mary Masterson to 2 more medical groups.
What is Mary M. Masterson's MIPS score?
Mary Masterson's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
How many Medicare patients does Mary M. Masterson see?
CMS counts 93 Medicare patients who saw Mary Masterson in 2024, with an average age of 72.
Has Mary M. Masterson received payments from drug or device companies?
CMS Open Payments shows $117 in general payments to Mary Masterson from 1 company from 2025 to 2025. The largest total came from ARS Pharmaceuticals Operations, Inc.
How long has Mary M. Masterson been practicing?
Mary Masterson graduated from medical school in 2000, 26 years ago.
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