Dr. Ajay Kumar, MD
- Medicare services, 2024
- 1,734
- Medicare patients, 2024
- 648
- Part D claims, 2024
- 271
- Hospital affiliations
- 2
- Industry payments
- $488
- Practice address
- 6334 Cedar Lane, Columbia, MD 21044
- Practice phone
- Call (443) 539-3236
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lorien Dialysis - Columbia
Dialysis Center - Independent · Columbia, Maryland
Find Dr. Kumar's professional email, personal email and mobile number
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Dr. Ajay Kumar is a nephrologist in Columbia, Maryland
Dr. Kumar practices at Lorien Dialysis - Columbia in Columbia, Maryland.
Dr. Kumar's NPI, 1922141241, was assigned on February 15, 2007. Dr. Kumar holds Maryland license D0065516.
- NPI
- 1922141241NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789785460
- NPI enumeration date
- February 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (443) 539-3236
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ajay Kumar practices at Lorien Dialysis - Columbia in Columbia, Maryland
Dr. Kumar's primary practice is Lorien Dialysis - Columbia, at 6334 Cedar Lane, Columbia, MD 21044 in Howard County. The practice phone is (443) 539-3236.
- Lorien Dialysis - Columbia6334 Cedar Lane, Columbia, MD 21044 · Howard CountyPhone(443) 539-3236
Source: Dmand AI Affiliation Data
Dr. Ajay Kumar is affiliated with 6 sites of care and 1 medical group
Dr. Kumar's primary practice is Lorien Dialysis - Columbia in Columbia, Maryland. Dr. Kumar is also affiliated with Johns Hopkins Howard County Medical Center. The medical group on file is Mid-Atlantic Nephrology Associates. Dmand AI also links Dr. Kumar to 1 more hospital, 2 dialysis centers and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ajay Kumar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kumar practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lorien Dialysis - Columbia | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ajay Kumar is one of 279 nephrologists in Maryland
Nephrology is Dr. Kumar's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Kumar is licensed in Maryland.
Specialties and state licenses
- Nephrology, MarylandPrimary
Nephrologists near Dr. Kumar
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. Ajay Kumar billed Medicare for 1,734 services in 2024
CMS data shows 1,734 Medicare services from Dr. Kumar across 25 procedure codes in 2024, for 648 Medicare patients. Medicare paid $157,645 for them.
Dr. Kumar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8022024: 7487%
- Tests and treatments
- 2023: 7232024: 56422%
- Surgery
- 2023: 3072024: 24421%
- Other services
- 2023: 02024: 122
- Lab and pathology
- 2023: 482024: 5617%
Where Dr. Kumar's Medicare services took place, 2024
- In an office64037%
- In a facility1,09463%
Dr. Kumar compared with the Maryland median for nephrologists, 2024
- Dr. Kumar
- Maryland median
- Medicare services
- 1,734vs 1,39225% above
- Medicare patients
- 648vs 41755% above
- Part D claims
- 204vs 47257% below
Medians across 268 nephrologists in Maryland with Dmand AI profiles that report each measure.
Dr. Kumar'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. Kumar?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kumar and other nephrologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ajay Kumar treated 648 Medicare patients in 2024, average age 73
CMS counts 648 Medicare patients who saw Dr. Kumar in 2024. The largest group is 75 to 84, with 241 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 26% are also on Medicaid. Their average risk score is 5.41, 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. Kumar's median patient age at 70, with 46% women.
Dr. Kumar's Medicare patients by age, 2024
Dr. Kumar's Medicare patients by sex, 2024
- Women33351%
- Men31549%
Chronic conditions among Dr. Kumar's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes63%
- Heart failure50%
- Arthritis49%
- Ischemic heart disease44%
- Mood disorders37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kumar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women46%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ajay Kumar wrote 271 Medicare Part D claims in 2024
In 2024, Dr. Kumar wrote 271 Medicare Part D claims for 73 patients. 84% of them were for generic drugs. CMS names the drug for 204 of them, across 11 drugs with 11 or more claims each, at $33,021 in total drug cost. In 2023, CMS named 166 claims across 10 drugs.
Dr. Kumar's Part D claims by kind of drug, 2024
- Generic228 claims84%
- Brand-name43 claims16%
Dr. Kumar'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1662024: 20423%
Drugs named by CMS: 11 in 2024, 10 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. Ajay Kumar takes part in Medicare
Dr. Kumar 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. Ajay Kumar received $488 in industry payments from 2016 to 2025
CMS Open Payments shows 18 general payments to Dr. Kumar from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Mallinckrodt LLC paid the most, $100.
General payments to Dr. Kumar by program year, 2016 to 2025
General payments to Dr. Kumar by kind, 2016 to 2025
- Food and beverage$48499%
- Education$31%
Companies that paid Dr. Kumar 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. Ajay Kumar'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)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. Ajay Kumar
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. Ajay Kumar's NPI number?
Dr. Ajay Kumar's NPI number is 1922141241. It was assigned on February 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ajay Kumar?
Dr. Ajay Kumar is a nephrologist in Columbia, Maryland. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Ajay Kumar practice?
Dr. Kumar practices at 6334 Cedar Lane, Columbia, MD 21044. Dr. Kumar's primary practice is Lorien Dialysis - Columbia in Columbia, Maryland. Dmand AI also links Dr. Kumar to 1 hospital, 2 dialysis centers and 1 group practice or clinic.
What is Dr. Ajay Kumar's office phone number?
The practice phone on file for Dr. Kumar is (443) 539-3236.
What is Dr. Ajay Kumar's medical license number?
Dr. Kumar holds Maryland license D0065516.
Which hospitals is Dr. Ajay Kumar affiliated with?
Dr. Kumar is affiliated with Johns Hopkins Howard County Medical Center. Dmand AI links Dr. Kumar to 1 more hospital.
What medical group is Dr. Ajay Kumar part of?
Dr. Kumar is linked to Mid-Atlantic Nephrology Associates.
Does Dr. Ajay Kumar accept Medicare?
Yes. CMS data shows Dr. Kumar billed Medicare for 1,734 services in 2024, and Dr. Kumar accepts Medicare assignment.
How many Medicare patients does Dr. Ajay Kumar see?
CMS counts 648 Medicare patients who saw Dr. Kumar in 2024, with an average age of 73.
What services does Dr. Ajay Kumar bill to Medicare?
In 2024, Dr. Kumar's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99232) and dialysis (90960).
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What drugs does Dr. Ajay Kumar prescribe most?
In 2024 Medicare Part D data, Dr. Kumar's most prescribed drugs by claims were Losartan Potassium, Amlodipine Besylate and Lokelma.
Has Dr. Ajay Kumar received payments from drug or device companies?
CMS Open Payments shows $488 in general payments to Dr. Kumar from 13 companies from 2016 to 2025. The largest total came from Mallinckrodt LLC.
How long has Dr. Ajay Kumar been practicing?
Dr. Kumar graduated from medical school in 1999, 27 years ago.
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