Ratnaja Katneni, MD
Nephrology Physician · Newport Beach, CA
Ratnaja Katneni, MD is a nephrology physician with a practice address in Newport Beach, California, and NPI 1790887610, issued on Sep 1, 2006. Check the license (California C134129, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ratnaja Katneni
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- C134129 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20241 SW Birch St Ste 104, Newport Beach, CA 92660
- Phone
- (949) 490-4044
- Enumerated
- Sep 1, 2006
- Record last updated
- Mar 19, 2024
- Fax
- (657) 218-4161
- Medicare enrollment
- Enrolled (PECOS I20150727000644); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Verify Ratnaja Katneni in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C134129Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average nephrology physician in 2024
652 Medicare Part D claims for 80 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate69 claims
- Carvedilol54 claims
- Losartan Potassium51 claims
- Lisinopril29 claims
- Hydralazine Hcl23 claims
- Furosemide21 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: $34.48
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Ratnaja Katneni among 1,468 nephrology physician records in California
Ratnaja Katneni, MD is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2001 · median 2001 among the 1,128 with a school on file
- Record last updated2024 · 62% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Newport Beach → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Glenn Chiang, M.D.Newport Beach, CA 926631285697227
- Bryan Dang, M.D.Newport Beach, CA 926631619991742
- Sarah Lee, M.D., PH.D.Newport Beach, CA 926631700923042
- Paul Ozuzun, M.D.Newport Beach, CA 926631972868347
- Jerald Sigala, M.D.Newport Beach, CA 926631073605473
- Brian Wang, D.O.Newport Beach, CA 926631235591181
- Eric Wechsler, M.D.Newport Beach, CA 926631659469526
- Nathaniel Ho, M.D.Laguna Hills, CA 926531497792147
Common questions
What is Ratnaja Katneni, MD's NPI number?
Ratnaja Katneni, MD's National Provider Identifier (NPI) is 1790887610, issued on Sep 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ratnaja Katneni, MD located?
The NPPES record lists a practice address at 20241 SW Birch St Ste 104, Newport Beach, CA, 92660. Phone: (949) 490-4044. Providers update this record themselves, so call before visiting.
How can I verify Ratnaja Katneni, MD's license?
NPPES lists California license number C134129, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ratnaja Katneni, MD prescribe under Medicare Part D?
In 2024, Ratnaja Katneni, MD had 652 Medicare Part D claims for 80 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.