Samuel J. Wong, DO
Nephrology Physician · Berkeley, CA
Samuel J. Wong, DO is a nephrology physician with a practice address in Berkeley, California, and NPI 1215034905, issued on Sep 17, 2006. Check the license (California 20A5983, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Samuel J. Wong
- Credential
- DO
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 20A5983 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2905 Telegraph Ave, Berkeley, CA 94705
- Phone
- (510) 841-0411
- Enumerated
- Sep 17, 2006
- Record last updated
- Mar 5, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (510) 204-9086
- Medicaid ID
- 00AX59830 CA
- Medicare enrollment
- Enrolled (PECOS I20050718000141); 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 →
Also registered at 2905 Telegraph Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Ajuria, M.D.Nephrology Physician1922425057
- Akosua Appea, FNPFamily Nurse Practitioner1669214367
- Donald Block, MDNephrology Physician1205933934
- Alexis Chettiar, NPNurse Practitioner1164667549
- Mario Corona, MDNephrology Physician1679670301
- Simarjit Dhaliwal, MDNephrology Physician1255485900
Verify Samuel J. Wong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5983Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average nephrology physician in 2024
939 Medicare Part D claims for 107 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Farxiga98 claims
- Amlodipine Besylate87 claims
- Lisinopril75 claims
- Furosemide68 claims
- Rayaldee39 claims
- Atorvastatin Calcium38 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: $17.74
2 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals 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
- East Bay Nephrology Medical Group IncBerkeley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Samuel J. Wong among 1,468 nephrology physician records in California
Samuel J. Wong, DO 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
- Graduated1988 · median 2001 among the 1,128 with a school on file
- Record last updated2015 · 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 Berkeley → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Donald Block, MDBerkeley, CA 947051205933934
- Mario Corona, MDBerkeley, CA 947051679670301
- Robert Doud, MDBerkeley, CA 947051184721821
- Claudia Iota-HerbeiBerkeley, CA 947051548367113
- Malcolm Karlinsky, MDBerkeley, CA 947051609973353
- Oliver Khakmahd, MDBerkeley, CA 947051164529830
- Terina Miller, MDBerkeley, CA 947051669579348
- Ellen Morrissey, MDBerkeley, CA 947051003913781
Common questions
What is Samuel J. Wong, DO's NPI number?
Samuel J. Wong, DO's National Provider Identifier (NPI) is 1215034905, issued on Sep 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Samuel J. Wong, DO located?
The NPPES record lists a practice address at 2905 Telegraph Ave, Berkeley, CA, 94705. Phone: (510) 841-0411. Providers update this record themselves, so call before visiting.
How can I verify Samuel J. Wong, DO's license?
NPPES lists California license number 20A5983, 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 Samuel J. Wong, DO prescribe under Medicare Part D?
In 2024, Samuel J. Wong, DO had 939 Medicare Part D claims for 107 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.