Joshua Ian Bernstein, M.D.
Nephrology Physician · San Francisco, CA
Joshua Ian Bernstein, M.D. is a nephrology physician with a practice address in San Francisco, California, and NPI 1457317729, issued on Apr 25, 2006. Check the license (California A99752, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joshua Ian Bernstein
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A99752 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2100 Webster St, San Francisco, CA 94115
- Phone
- (415) 923-3815
- Enumerated
- Apr 25, 2006
- Record last updated
- Jul 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (415) 749-5713
- Medicaid ID
- 00A997520 CA
- Medicare enrollment
- Enrolled (PECOS I20080430000320); may accept Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 2100 Webster St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joshua Ian Bernstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99752Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average nephrology physician in 2024
157 Medicare Part D claims for 61 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 97.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $51.28
2 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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
- Regents Univ OF California UcsfSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joshua Ian Bernstein among 1,468 nephrology physician records in California
Joshua Ian Bernstein, 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 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 updated2013 · 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 Francisco → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Jamshid Amanzadeh, MDSan Francisco, CA 941151629170428
- Michael Borah, MDSan Francisco, CA 941151144395435
- Alan Coleman, M.D.San Francisco, CA 941151013089580
- Tracy Jonelis, MDSan Francisco, CA 941151942372776
- Mark Kasselik, MDSan Francisco, CA 941151891860193
- Sepehr Keyhani, MDSan Francisco, CA 941151952713570
- Manjula Kurella, MD, MPHSan Francisco, CA 941151720032972
- Jonathan Lieberman, MDSan Francisco, CA 941151174601728
Common questions
What is Joshua Ian Bernstein, M.D.'s NPI number?
Joshua Ian Bernstein, M.D.'s National Provider Identifier (NPI) is 1457317729, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Ian Bernstein, M.D. located?
The NPPES record lists a practice address at 2100 Webster St, San Francisco, CA, 94115. Phone: (415) 923-3815. Providers update this record themselves, so call before visiting.
How can I verify Joshua Ian Bernstein, M.D.'s license?
NPPES lists California license number A99752, 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 Joshua Ian Bernstein, M.D. prescribe under Medicare Part D?
In 2024, Joshua Ian Bernstein, M.D. had 157 Medicare Part D claims for 61 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Joshua Ian Bernstein, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.