Ralph C. Wang, MD
Emergency Medicine Physician · Oakland, CA
Ralph C. Wang, MD is an emergency medicine physician with a practice address in Oakland, California, and NPI 1497724132, issued on Mar 15, 2006. Check the license (California A78496, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ralph C. Wang
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A78496 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1411 East 31St Street, Oakland, CA 94602
- Phone
- (209) 342-2300
- Enumerated
- Mar 15, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (209) 524-4240
- Medicaid ID
- 00A784960 CA
- Medicare enrollment
- Enrolled (PECOS I20040511000584); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1411 East 31St Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ralph C. Wang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A78496Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average emergency medicine physician in 2024
43 Medicare Part D claims for 30 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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): 74.5 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).
Bills Medicare through one group practice
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ralph C. Wang among 7,751 emergency medicine physician records in California
Ralph C. Wang, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2000 · median 2011 among the 4,560 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
247 emergency medicine physician records list a practice address in Oakland
They are 247 of the 18,558 NPPES records with a practice address in Oakland, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Oakland → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- David English, MDOakland, CA 946021275514325
- Bradley Frazee, MDOakland, CA 946021447241765
- Jocelyn Freeman, MDOakland, CA 946021194716498
- Jared Greenholz, MDOakland, CA 946021417930520
- Cherie Hargis, MDOakland, CA 946021821079377
- Abraha Kidane, PAOakland, CA 946021942291265
- Stephen Miller, MDOakland, CA 946021750363727
- Andrew Nothmann, MDOakland, CA 946021518949585
Common questions
What is Ralph C. Wang, MD's NPI number?
Ralph C. Wang, MD's National Provider Identifier (NPI) is 1497724132, issued on Mar 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ralph C. Wang, MD located?
The NPPES record lists a practice address at 1411 East 31St Street, Oakland, CA, 94602. Phone: (209) 342-2300. Providers update this record themselves, so call before visiting.
How can I verify Ralph C. Wang, MD's license?
NPPES lists California license number A78496, 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 Ralph C. Wang, MD prescribe under Medicare Part D?
In 2024, Ralph C. Wang, MD had 43 Medicare Part D claims for 30 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Ralph C. Wang, MD's MIPS final score?
The 2023 MIPS final score is 74.5 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.