Ajay Kumar, M.D.
Nephrology Physician · Columbia, MD
Ajay Kumar, M.D. is a nephrology physician with a practice address in Columbia, Maryland, and NPI 1922141241, issued on Feb 15, 2007. Check the license (Maryland D0065516, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Ajay Kumar
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- D0065516 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5999 Harpers Farm RD Ste W250, Columbia, MD 21044
- Phone
- (410) 772-8822
- Enumerated
- Feb 15, 2007
- Record last updated
- Jan 22, 2025
- Fax
- (410) 772-9274
- Medicare enrollment
- Enrolled (PECOS I20200608002019); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 337 in Maryland → Look up another NPI →
Also registered at 5999 Harpers Farm RD Ste W250
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ping-Hsin Chen, M.D.Nephrology Physician1174521637
- Floyd Johnson, NPAcute Care Nurse Practitioner1033340799
- Jia Liu, M.D.Nephrology Physician1043282544
- Tin Maung, M.D.Nephrology Physician1033117908
- Kayana MesidorFamily Nurse Practitioner1497619225
- Mary Pieprzak, M.D.Nephrology Physician1326046202
Verify Ajay Kumar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0065516Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average nephrology physician in 2024
271 Medicare Part D claims for 73 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Losartan Potassium30 claims
- Amlodipine Besylate27 claims
- Lokelma24 claims
- Doxazosin Mesylate20 claims
- Hydrochlorothiazide20 claims
- Hydralazine Hcl19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $46.09
3 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mid-Atlantic Nephrology Associates PALaurel, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ajay Kumar among 337 nephrology physician records in Maryland
Ajay Kumar, M.D. is one of 337 nephrology physician records with a practice address in Maryland. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 37% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1999 · median 2001 among the 232 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Maryland
There are 337 nephrology physician records in Maryland.
All 337 in Maryland → Every provider in Columbia → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Ping-Hsin Chen, M.D.Columbia, MD 210441174521637
- Jia Liu, M.D.Columbia, MD 210441043282544
- Tin Maung, M.D.Columbia, MD 210441033117908
- Mary Pieprzak, M.D.Columbia, MD 210441326046202
- Misha Varma, MDColumbia, MD 210441346701513
- Nickolas Coombs, DOFallston, MD 210471982224705
- Anuradha Boddeti, M.D.Glen Burnie, MD 210611023089471
- Nadia Chaudhri, MDGlen Burnie, MD 210611841334240
Common questions
What is Ajay Kumar, M.D.'s NPI number?
Ajay Kumar, M.D.'s National Provider Identifier (NPI) is 1922141241, issued on Feb 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ajay Kumar, M.D. located?
The NPPES record lists a practice address at 5999 Harpers Farm RD Ste W250, Columbia, MD, 21044. Phone: (410) 772-8822. Providers update this record themselves, so call before visiting.
How can I verify Ajay Kumar, M.D.'s license?
NPPES lists Maryland license number D0065516, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ajay Kumar, M.D. prescribe under Medicare Part D?
In 2024, Ajay Kumar, M.D. had 271 Medicare Part D claims for 73 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.