Dr. Gerard Mark Lowder, MD
- Medicare services, 2024
- 1,563
- Medicare patients, 2024
- 537
- Part D claims, 2024
- 867
- Hospital affiliations
- 2
- Industry payments
- $2,378
- Practice address
- 1589 Sulphur Spring Rd, Halethorpe, MD 21227
- Practice phone
- Call (410) 354-3037
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Harbor Park Dialysis
Halethorpe, Maryland
Find Dr. Lowder'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. Gerard Mark Lowder is a nephrologist in Halethorpe, Maryland
Dr. Lowder practices at Harbor Park Dialysis in Halethorpe, Maryland.
Dr. Lowder's NPI, 1447258876, was assigned on July 11, 2005. Dr. Lowder holds Maryland license D29296.
- NPI
- 1447258876NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193702447
- NPI enumeration date
- July 11, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 354-3037
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gerard Mark Lowder practices at Harbor Park Dialysis in Halethorpe, Maryland
Dr. Lowder's primary practice is Harbor Park Dialysis, at 1589 Sulphur Spring Rd, Halethorpe, MD 21227 in Baltimore County. The practice phone is (410) 354-3037.
- Harbor Park Dialysis1589 Sulphur Spring Rd, Halethorpe, MD 21227 · Baltimore CountyPhone(410) 354-3037
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gerard Mark Lowder is affiliated with 8 sites of care and 1 medical group
Dr. Lowder's primary practice is Harbor Park Dialysis in Halethorpe, Maryland. Dr. Lowder is also affiliated with University of Maryland Baltimore Washington Medical Center. The medical group on file is Mid-Atlantic Nephrology Associates. Dmand AI also links Dr. Lowder to 1 more hospital, 4 dialysis centers and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gerard Mark Lowder's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lowder practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Harbor Park Dialysis | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gerard Mark Lowder is one of 279 nephrologists in Maryland
Nephrology is Dr. Lowder's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Lowder is licensed in Maryland.
Specialties and state licenses
- Nephrology, MarylandPrimary
Nephrologists near Dr. Lowder
Counts of nephrologists 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. Gerard Mark Lowder billed Medicare for 1,563 services in 2024
CMS data shows 1,563 Medicare services from Dr. Lowder across 15 procedure codes in 2024, for 537 Medicare patients. Medicare paid $165,731 for them.
Dr. Lowder's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8762024: 9367%
- Tests and treatments
- 2023: 5672024: 50411%
- Other services
- 2023: 02024: 87
- Lab and pathology
- 2023: 382024: 365%
Where Dr. Lowder's Medicare services took place, 2024
- In an office88156%
- In a facility68244%
Dr. Lowder compared with the Maryland median for nephrologists, 2024
- Dr. Lowder
- Maryland median
- Medicare services
- 1,563vs 1,39212% above
- Medicare patients
- 537vs 41729% above
- Part D claims
- 616vs 47231% above
Medians across 268 nephrologists in Maryland with Dmand AI profiles that report each measure.
Dr. Lowder'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. Lowder?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lowder and other nephrologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gerard Mark Lowder treated 537 Medicare patients in 2024, average age 73
CMS counts 537 Medicare patients who saw Dr. Lowder in 2024. The largest group is 75 to 84, with 197 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 22% are also on Medicaid. Their average risk score is 3.68, 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. Lowder's median patient age at 68, with 45% women.
Dr. Lowder's Medicare patients by age, 2024
Dr. Lowder's Medicare patients by sex, 2024
- Women27251%
- Men26549%
Chronic conditions among Dr. Lowder's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes64%
- Arthritis57%
- Ischemic heart disease56%
- Heart failure50%
- Atrial fibrillation39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lowder'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
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gerard Mark Lowder wrote 867 Medicare Part D claims in 2024
In 2024, Dr. Lowder wrote 867 Medicare Part D claims for 139 patients. 83% of them were for generic drugs. CMS names the drug for 616 of them, across 28 drugs with 11 or more claims each, at $59,266 in total drug cost. In 2023, CMS named 484 claims across 24 drugs.
Dr. Lowder's Part D claims by kind of drug, 2024
- Generic723 claims83%
- Brand-name144 claims17%
Dr. Lowder'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. Lowder's Part D claims, 2024
- Opioids1%13 of 867 claims
- Antibiotics5%43 of 867 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: 4842024: 61627%
Drugs named by CMS: 28 in 2024, 24 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. Gerard Mark Lowder takes part in Medicare
Dr. Lowder 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. Gerard Mark Lowder received $2,378 in industry payments from 2016 to 2025
CMS Open Payments shows 65 general payments to Dr. Lowder from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Baxter Healthcare paid the most, $314.
General payments to Dr. Lowder by program year, 2016 to 2025
General payments to Dr. Lowder by kind, 2016 to 2025
- Food and beverage$2,28196%
- Education$974%
Companies that paid Dr. Lowder the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gerard Mark Lowder'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)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) |
| 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. Gerard Mark Lowder
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. Gerard Mark Lowder's NPI number?
Dr. Gerard Mark Lowder's NPI number is 1447258876. It was assigned on July 11, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gerard Mark Lowder?
Dr. Gerard Mark Lowder is a nephrologist in Halethorpe, Maryland. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Gerard Mark Lowder practice?
Dr. Lowder practices at 1589 Sulphur Spring Rd, Halethorpe, MD 21227. Dr. Lowder's primary practice is Harbor Park Dialysis in Halethorpe, Maryland. Dmand AI also links Dr. Lowder to 1 hospital, 4 dialysis centers and 1 group practice or clinic.
What is Dr. Gerard Mark Lowder's office phone number?
The practice phone on file for Dr. Lowder is (410) 354-3037.
What is Dr. Gerard Mark Lowder's medical license number?
Dr. Lowder holds Maryland license D29296.
Which hospitals is Dr. Gerard Mark Lowder affiliated with?
Dr. Lowder is affiliated with University of Maryland Baltimore Washington Medical Center. Dmand AI links Dr. Lowder to 1 more hospital.
What medical group is Dr. Gerard Mark Lowder part of?
Dr. Lowder is linked to Mid-Atlantic Nephrology Associates.
Does Dr. Gerard Mark Lowder accept Medicare?
Yes. CMS data shows Dr. Lowder billed Medicare for 1,563 services in 2024, and Dr. Lowder accepts Medicare assignment.
How many Medicare patients does Dr. Gerard Mark Lowder see?
CMS counts 537 Medicare patients who saw Dr. Lowder in 2024, with an average age of 73.
What services does Dr. Gerard Mark Lowder bill to Medicare?
In 2024, Dr. Lowder's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99213) and dialysis (90960).
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What drugs does Dr. Gerard Mark Lowder prescribe most?
In 2024 Medicare Part D data, Dr. Lowder's most prescribed drugs by claims were Furosemide, Allopurinol and Ciprofloxacin HCl.
Has Dr. Gerard Mark Lowder received payments from drug or device companies?
CMS Open Payments shows $2,378 in general payments to Dr. Lowder from 23 companies from 2016 to 2025. The largest total came from Baxter Healthcare.
How long has Dr. Gerard Mark Lowder been practicing?
Dr. Lowder graduated from medical school in 1979, 47 years ago.
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