Ashok Nath, M.D.,
Nephrology Physician · San Bernardino, CA
Ashok Nath, M.D., is a nephrology physician with a practice address in San Bernardino, California, and NPI 1992951115, issued on Aug 8, 2008. Check the license (California A128657, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ashok Nath
- Credential
- M.D.,
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A128657 CA
Self-reported in NPPES; status is on the state search - Practice location
- 401 E Highland Ave Ste 551, San Bernardino, CA 92404
- Phone
- (909) 882-9150
- Enumerated
- Aug 8, 2008
- Record last updated
- Aug 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (909) 883-8972
- Medicare enrollment
- Enrolled (PECOS I20140609001845); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 401 E Highland Ave Ste 551
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sreesh Iyengar, MDNephrology Physician1699069146
- Paul Kil, FNP-CNurse Practitioner1982476479
- Parag Mehtani, M.D.Nephrology Physician1770773160
- Sapna Singh, MDNephrology Physician1417585605
- Marianne Usi, NPGerontology Nurse Practitioner1104507466
Verify Ashok Nath in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A128657Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% more Medicare Part D claims than the average nephrology physician in 2024
2,404 Medicare Part D claims for 366 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Hydralazine Hcl174 claims
- Furosemide161 claims
- Losartan Potassium151 claims
- Amlodipine Besylate120 claims
- Lisinopril112 claims
- Calcitriol81 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: $1,687.61
66 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, 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
- Nephrology Associates Medical Group IncHemet, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ashok Nath among 1,468 nephrology physician records in California
Ashok Nath, M.D., 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 2008, is newer than 65% of them.
- NPI issued2008 · 65% of these records are older, 30% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2003 · median 2001 among the 1,128 with a school on file
- Record last updated2021 · 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 San Bernardino → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Jay Agarwal, M.D.San Bernardino, CA 924041326091737
- Daniel Hwang, M.D.San Bernardino, CA 924041629150081
- Sreesh Iyengar, MDSan Bernardino, CA 924041699069146
- Allan Kavalich, M.D.San Bernardino, CA 924041639178692
- Claudia Landis, MDSan Bernardino, CA 924041871655274
- Parag Mehtani, M.D.San Bernardino, CA 924041770773160
- Sapna Singh, MDSan Bernardino, CA 924041417585605
- James Tomas, MDSan Bernardino, CA 924041902040819
Common questions
What is Ashok Nath, M.D.,'s NPI number?
Ashok Nath, M.D.,'s National Provider Identifier (NPI) is 1992951115, issued on Aug 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ashok Nath, M.D., located?
The NPPES record lists a practice address at 401 E Highland Ave Ste 551, San Bernardino, CA, 92404. Phone: (909) 882-9150. Providers update this record themselves, so call before visiting.
How can I verify Ashok Nath, M.D.,'s license?
NPPES lists California license number A128657, 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 Ashok Nath, M.D., prescribe under Medicare Part D?
In 2024, Ashok Nath, M.D., had 2,404 Medicare Part D claims for 366 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.