Nazia Siddiqi, M.D.
Nephrology Physician · Pomona, CA
Nazia Siddiqi, M.D. is a nephrology physician with a practice address in Pomona, California, and NPI 1578879755, issued on Aug 25, 2010. Check the license (California 125448, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nazia Siddiqi
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 125448 CA
A125448 CA
Self-reported in NPPES; status is on the state search - Practice location
- 790 E Bonita Ave, Pomona, CA 91767
- Phone
- (909) 447-8585
- Enumerated
- Aug 25, 2010
- Record last updated
- Jun 8, 2022
- Fax
- (909) 447-8593
- Medicare enrollment
- Enrolled (PECOS I20150630001060); may accept Medicare assignment
- 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 790 E Bonita Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kala BrothertonLicensed Vocational Nurse1821519455
Verify Nazia Siddiqi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 125448Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average nephrology physician in 2024
3,824 Medicare Part D claims for 299 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 61 claims were for opioids.
Most prescribed
- Atorvastatin Calcium308 claims
- Amlodipine Besylate285 claims
- Levothyroxine Sodium208 claims
- Lisinopril151 claims
- Metformin Hcl138 claims
- Hydrochlorothiazide96 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): 81.4 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: $67.47
3 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, 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 2 group practices
- Chaparral Medical Group IncPomona, CA
- Mark Lee MD IncWhittier, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nazia Siddiqi among 1,468 nephrology physician records in California
Nazia Siddiqi, 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 2010, is newer than 73% of them.
- NPI issued2010 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2010 · median 2001 among the 1,128 with a school on file
- Record last updated2022 · 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 Pomona → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Victor Pappoe, MDPomona, CA 917671396781969
- Edward Barnes, M.D.Pomona, CA 917661689664484
- Hla Myint Maung Hwang, M.D.Ontario, CA 917621356357560
- Abid Khan, M.D.Ontario, CA 917621326184524
- Nitin Bhasin, M.D.San Dimas, CA 917731669790838
- Michael Bien, M.D.San Dimas, CA 917731689680654
- Claudio Gallego, M.D.San Dimas, CA 917731285649962
- Aamir Jamal, M.D.San Dimas, CA 917731558377523
Common questions
What is Nazia Siddiqi, M.D.'s NPI number?
Nazia Siddiqi, M.D.'s National Provider Identifier (NPI) is 1578879755, issued on Aug 25, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Nazia Siddiqi, M.D. located?
The NPPES record lists a practice address at 790 E Bonita Ave, Pomona, CA, 91767. Phone: (909) 447-8585. Providers update this record themselves, so call before visiting.
How can I verify Nazia Siddiqi, M.D.'s license?
NPPES lists California license number 125448, 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 Nazia Siddiqi, M.D. prescribe under Medicare Part D?
In 2024, Nazia Siddiqi, M.D. had 3,824 Medicare Part D claims for 299 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Nazia Siddiqi, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.4 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.