Warda Zaman, D.O.
Nephrology Physician · Greenbrae, CA
Warda Zaman, D.O. is a nephrology physician with a practice address in Greenbrae, California, and NPI 1336534585, issued on Apr 4, 2015. Check the license (California 20A16455, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Warda Zaman
- Credential
- D.O.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 20A16455 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1341 S Eliseo Dr Ste 200, Greenbrae, CA 94904
- Phone
- (154) 925-3075
- Enumerated
- Apr 4, 2015
- Record last updated
- May 15, 2024
- Medicare enrollment
- Enrolled (PECOS I20200424001214); may accept Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2015
- 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 1341 S Eliseo Dr Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Shanaghan, DOFamily Medicine Physician1750318283
- Barbara Wyeth, FNPFamily Nurse Practitioner1528331212
Verify Warda Zaman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A16455Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average nephrology physician in 2024
706 Medicare Part D claims for 213 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium60 claims
- Furosemide59 claims
- Amlodipine Besylate36 claims
- Farxiga33 claims
- Bumetanide32 claims
- Calcium Acetate32 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: $132.42
4 payments; by number, the most common kind was food and beverage; the largest payer was Amgen 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
- East Bay Nephrology Medical Group IncBerkeley, CA
- 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).
Warda Zaman among 1,468 nephrology physician records in California
Warda Zaman, D.O. 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 2015, is newer than 87% of them.
- NPI issued2015 · 87% of these records are older, 11% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2015 · 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 Greenbrae → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Genevieve Estilo, MDGreenbrae, CA 949041558560482
- Henry Hulter, M.D.San Rafael, CA 949031104139633
- Eric Tepper, MDSan Rafael, CA 949031790869774
- Ann O'Hare, MDCorte Madera, CA 949251033294020
- Sara Holmes, MDNovato, CA 949451801174479
- Farid Osman, MDPetaluma, CA 949541962423103
- Bruce Morse, MDSan Pablo, CA 948061427325760
- Kenneth Chen, MDRichmond, CA 948011205911971
Common questions
What is Warda Zaman, D.O.'s NPI number?
Warda Zaman, D.O.'s National Provider Identifier (NPI) is 1336534585, issued on Apr 4, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Warda Zaman, D.O. located?
The NPPES record lists a practice address at 1341 S Eliseo Dr Ste 200, Greenbrae, CA, 94904. Phone: (154) 925-3075. Providers update this record themselves, so call before visiting.
How can I verify Warda Zaman, D.O.'s license?
NPPES lists California license number 20A16455, 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 Warda Zaman, D.O. prescribe under Medicare Part D?
In 2024, Warda Zaman, D.O. had 706 Medicare Part D claims for 213 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.