Dr. Adrien Jean-Harold Mazer, MD
- Medicare services, 2024
- 549
- Medicare patients, 2024
- 331
- Part D claims, 2016
- 11
- Hospital affiliations
- 2
- Industry payments
- $1,052
- Practice address
- 2001 Medical Parkway, Annapolis, MD 21401
- Practice phone
- Call (443) 481-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mazer's professional email, personal email and mobile number
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Dr. Adrien Jean-Harold Mazer is an internist in Annapolis, Maryland
Dr. Mazer practices at Luminis Health Anne Arundel Medical Center in Annapolis, Maryland, part of Luminis Health.
Dr. Mazer's NPI, 1013141522, was assigned on May 12, 2009. Dr. Mazer graduated from Georgetown University School of Medicine in 2009. Dr. Mazer holds District of Columbia license MD039223.
- NPI
- 1013141522NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567618119
- NPI enumeration date
- May 12, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (443) 481-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Adrien Jean-Harold Mazer practices at Luminis Health Anne Arundel Medical Center in Annapolis, Maryland
Dr. Mazer's primary practice is Luminis Health Anne Arundel Medical Center, at 2001 Medical Parkway, Annapolis, MD 21401 in Anne Arundel County. The practice phone is (443) 481-1000.
- Luminis Health Anne Arundel Medical Center2001 Medical Parkway, Annapolis, MD 21401 · Anne Arundel CountyPhone(443) 481-1000
Source: Dmand AI Affiliation Data
Dr. Adrien Jean-Harold Mazer is affiliated with 2 sites of care and 2 medical groups
Dr. Mazer's primary practice is Luminis Health Anne Arundel Medical Center in Annapolis, Maryland, part of Luminis Health. Dr. Mazer is also affiliated with MedStar Georgetown University Hospital. The medical group on file is MedStar Medical Group. Dmand AI also links Dr. Mazer to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Adrien Jean-Harold Mazer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mazer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Luminis Health Anne Arundel Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Adrien Jean-Harold Mazer is one of 3,320 internists in Maryland
Internal medicine is Dr. Mazer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mazer is licensed in District of Columbia.
Specialties and state licenses
- Internal medicine, District of ColumbiaPrimary
Internists near Dr. Mazer
Counts of internists 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. Adrien Jean-Harold Mazer billed Medicare for 549 services in 2024
CMS data shows 549 Medicare services from Dr. Mazer across 5 procedure codes in 2024, for 331 Medicare patients. Medicare paid $76,602 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mazer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4942024: 5246%
- Imaging
- 2023: 02024: 14
- Surgery
- 2023: 02024: 11
Dr. Mazer compared with the Maryland median for internists, 2024
- Dr. Mazer
- Maryland median
- Medicare services
- 549vs 65616% below
- Medicare patients
- 331vs 25132% above
- Part D claims
- 11vs 30996% below
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Mazer'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Adrien Jean-Harold Mazer treated 331 Medicare patients in 2024, average age 75
CMS counts 331 Medicare patients who saw Dr. Mazer in 2024. The largest group is 75 to 84, with 126 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.74, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Mazer's median patient age at 65, with 54% women.
Dr. Mazer's Medicare patients by age, 2024
Dr. Mazer's Medicare patients by sex, 2024
- Women17051%
- Men16149%
Chronic conditions among Dr. Mazer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Heart failure65%
- Ischemic heart disease62%
- Arthritis60%
- Chronic kidney disease56%
- Diabetes56%
- Mood disorders45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mazer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Adrien Jean-Harold Mazer wrote 11 Medicare Part D claims in 2016
In 2016, Dr. Mazer wrote 11 Medicare Part D claims. They cover 1 drug, with $4,237 in total drug cost.
Dr. Mazer's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Adrien Jean-Harold Mazer takes part in Medicare
Dr. Mazer 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. Adrien Jean-Harold Mazer received $1,052 in industry payments from 2016 to 2024
CMS Open Payments shows 3 general payments to Dr. Mazer from 3 drug and device companies from 2016 to 2024. Travel and lodging make up the largest share, 95% of the total. Genentech, Inc. paid the most, $1,000.
General payments to Dr. Mazer by program year, 2016 to 2024
General payments to Dr. Mazer by kind, 2016 to 2024
- Travel and lodging$1,00095%
- Food and beverage$525%
Companies that paid Dr. Mazer the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Adrien Jean-Harold Mazer graduated from Georgetown University School of Medicine
Dr. Mazer graduated from Georgetown University School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Adrien Jean-Harold Mazer'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 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) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Adrien Jean-Harold Mazer
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. Adrien Jean-Harold Mazer's NPI number?
Dr. Adrien Jean-Harold Mazer's NPI number is 1013141522. It was assigned on May 12, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Adrien Jean-Harold Mazer?
Dr. Adrien Jean-Harold Mazer is an internist in Annapolis, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Adrien Jean-Harold Mazer practice?
Dr. Mazer practices at 2001 Medical Parkway, Annapolis, MD 21401. Dr. Mazer's primary practice is Luminis Health Anne Arundel Medical Center in Annapolis, Maryland, part of Luminis Health. Dmand AI also links Dr. Mazer to 1 medical group.
What is Dr. Adrien Jean-Harold Mazer's office phone number?
The practice phone on file for Dr. Mazer is (443) 481-1000.
What is Dr. Adrien Jean-Harold Mazer's medical license number?
Dr. Mazer holds District of Columbia license MD039223.
Which hospitals is Dr. Adrien Jean-Harold Mazer affiliated with?
Dr. Mazer practices at Luminis Health Anne Arundel Medical Center in Annapolis, Maryland. Dr. Mazer is also affiliated with MedStar Georgetown University Hospital.
What medical group is Dr. Adrien Jean-Harold Mazer part of?
Dr. Mazer is linked to MedStar Medical Group. Dmand AI links Dr. Mazer to 1 more medical group.
Does Dr. Adrien Jean-Harold Mazer accept Medicare?
Yes. CMS data shows Dr. Mazer billed Medicare for 549 services in 2024, and Dr. Mazer accepts Medicare assignment.
How many Medicare patients does Dr. Adrien Jean-Harold Mazer see?
CMS counts 331 Medicare patients who saw Dr. Mazer in 2024, with an average age of 75.
What services does Dr. Adrien Jean-Harold Mazer bill to Medicare?
In 2024, Dr. Mazer's most billed Medicare services were critical care (99291), hospital inpatient care (99233) and hospital inpatient care (99232).
Show 4 more questionsShow fewer questions
Where did Dr. Adrien Jean-Harold Mazer go to medical school?
Dr. Mazer graduated from Georgetown University School of Medicine in 2009.
What drugs does Dr. Adrien Jean-Harold Mazer prescribe most?
In 2016 Medicare Part D data, Dr. Mazer's most prescribed drugs by claims were Spiriva.
Has Dr. Adrien Jean-Harold Mazer received payments from drug or device companies?
CMS Open Payments shows $1,052 in general payments to Dr. Mazer from 3 companies from 2016 to 2024. The largest total came from Genentech, Inc.
How long has Dr. Adrien Jean-Harold Mazer been practicing?
Dr. Mazer graduated from medical school in 2009, 17 years ago.
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