Shammah Ontario Nehemiah Williams, M.D.
Interventional Cardiology Physician · Loma Linda, CA
Shammah Ontario Nehemiah Williams, M.D. is an interventional cardiology physician with a practice address in Loma Linda, California, and NPI 1134419427, issued on Apr 8, 2011. Check the license (California A129581, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Shammah Ontario Nehemiah Williams
- Credential
- M.D.
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License number
- A129581 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11234 Anderson St, Loma Linda, CA 92354
- Phone
- (909) 558-4000
- Enumerated
- Apr 8, 2011
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20170703001176); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 632 in California → Look up another NPI →
Also registered at 11234 Anderson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Faiz Abdur-Rahman, MDStudent in an Organized Health Care Education/Training Program1144073768
- Marc Abou AssaliStudent in an Organized Health Care Education/Training Program1689317265
- Adina Achiriloaie, MDDiagnostic Neuroimaging (Radiology) Physician1992983282
- Ana Acosta, MDStudent in an Organized Health Care Education/Training Program1265179774
Verify Shammah Ontario Nehemiah Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A129581Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average interventional cardiology physician in 2024
175 Medicare Part D claims for 57 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Atorvastatin Calcium26 claims
- Furosemide12 claims
- Clopidogrel11 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): 85.2 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: $663.10
16 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 6,394 providers of this specialty with any payment received $7,062.29 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 3 group practices
- County OF RiversideMoreno Valley, CA
- Faculty Physicians And Surgeons OF LlusmLoma Linda, CA
- Sac Health SystemSan Bernardino, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shammah Ontario Nehemiah Williams among 632 interventional cardiology physician records in California
Shammah Ontario Nehemiah Williams, M.D. is one of 632 interventional cardiology physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 76% of them.
- NPI issued2011 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2011 · median 2001 among the 526 with a school on file
- Record last updated2022 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0011X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Cardiology Physician providers in California
There are 632 interventional cardiology physician records in California.
All 632 in California → Every provider in Loma Linda → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Aditya Bharadwaj, M.D.Loma Linda, CA 923541871729822
- Vinisha Garg, MDLoma Linda, CA 923541083980486
- Golda Harvatin, D.O.Loma Linda, CA 923541023541232
- Anthony Hilliard, M.D.Loma Linda, CA 923541841262623
- Jason Hoff, M.D.Loma Linda, CA 923541336583301
- Kenneth Jutzy, M.D.Loma Linda, CA 923541073531802
- Howard Lan, D.O.Loma Linda, CA 923541316206832
- Sukh Mehta, M.D.Loma Linda, CA 923541295754711
Common questions
What is Shammah Ontario Nehemiah Williams, M.D.'s NPI number?
Shammah Ontario Nehemiah Williams, M.D.'s National Provider Identifier (NPI) is 1134419427, issued on Apr 8, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Shammah Ontario Nehemiah Williams, M.D. located?
The NPPES record lists a practice address at 11234 Anderson St, Loma Linda, CA, 92354. Phone: (909) 558-4000. Providers update this record themselves, so call before visiting.
How can I verify Shammah Ontario Nehemiah Williams, M.D.'s license?
NPPES lists California license number A129581, 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 Shammah Ontario Nehemiah Williams, M.D. prescribe under Medicare Part D?
In 2024, Shammah Ontario Nehemiah Williams, M.D. had 175 Medicare Part D claims for 57 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. Part D covers Medicare prescriptions only.
What is Shammah Ontario Nehemiah Williams, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.2 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.