Krishna Krupa Ratnam, M.D.
Nephrology Physician · New York, NY
Krishna Krupa Ratnam, M.D. is a nephrology physician with a practice address in New York, New York, and NPI 1306004940, issued on May 30, 2008. Check the license (New York 242120, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Krishna Krupa Ratnam
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 242120 NY
Self-reported in NPPES; status is on the state search - Practice location
- 340 E 93RD St, New York, NY 10128
- Phone
- (615) 260-3736
- Enumerated
- May 30, 2008
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (212) 987-0389
- Medicare enrollment
- Enrolled (PECOS I20110613000641); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,049 in New York → Look up another NPI →
Also registered at 340 E 93RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elissa Levine Paulis, MSEDSpecialist1598037574
- Jonathan Lipana, M.D.Otolaryngology Physician1093973422
- Ruth Mechaneck, PH.D.Clinical Psychologist1861411175
- Munib Mundia, MDStudent in an Organized Health Care Education/Training Program1164766036
- Shterna SeligsonPhysician Assistant1982078408
Verify Krishna Krupa Ratnam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 242120Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average nephrology physician in 2024
2,606 Medicare Part D claims for 390 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Furosemide177 claims
- Amlodipine Besylate173 claims
- Metoprolol Tartrate152 claims
- Losartan Potassium128 claims
- Carvedilol118 claims
- Jardiance106 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Marcos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Krishna Krupa Ratnam among 1,049 nephrology physician records in New York
Krishna Krupa Ratnam, M.D. is one of 1,049 nephrology physician records with a practice address in New York. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 61% of them.
- NPI issued2008 · 61% of these records are older, 32% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2003 · median 1999 among the 764 with a school on file
- Record last updated2021 · 64% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in New York
There are 1,049 nephrology physician records in New York.
All 1,049 in New York → Every provider in New York → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Peter Kotanko, M.D.New York, NY 101281477961993
- Herman Rosen, M.D.New York, NY 101281518976687
- Valerie Barta, M.D.New York, NY 100751053675264
- Nicholas Condiles, MDNew York, NY 100751558822742
- Maria Devita, MDNew York, NY 100751184792996
- Andrew Moses, M.D.New York, NY 100751013379452
- Gary Orin, MDNew York, NY 100751053428284
- Anuj Patel, MDNew York, NY 100751013470459
Common questions
What is Krishna Krupa Ratnam, M.D.'s NPI number?
Krishna Krupa Ratnam, M.D.'s National Provider Identifier (NPI) is 1306004940, issued on May 30, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Krishna Krupa Ratnam, M.D. located?
The NPPES record lists a practice address at 340 E 93RD St, New York, NY, 10128. Phone: (615) 260-3736. Providers update this record themselves, so call before visiting.
How can I verify Krishna Krupa Ratnam, M.D.'s license?
NPPES lists New York license number 242120, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Krishna Krupa Ratnam, M.D. prescribe under Medicare Part D?
In 2024, Krishna Krupa Ratnam, M.D. had 2,606 Medicare Part D claims for 390 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.