NPPES file of Aug 9, 2026

Jeremy Demetri Williams, M.D.

Emergency Medicine Physician · Monterey Park, CA

Jeremy Demetri Williams, M.D. is an emergency medicine physician with a practice address in Monterey Park, California, and NPI 1023052230, issued on Jun 16, 2006. Check the license (California A76509, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023052230
Name
Jeremy Demetri Williams
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A76509 CA
Self-reported in NPPES; status is on the state search
Practice location
525 N Garfield Ave, Monterey Park, CA 91754
Phone
(626) 307-2129
Enumerated
Jun 16, 2006
Record last updated
Jun 11, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(626) 307-2056
Medicaid ID
00A765090 CA
Medicare enrollment
Enrolled (PECOS I20031218000660); accepts Medicare assignment
Medical or professional school
Wake Forest University School Of Medicine, 1998
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 525 N Garfield Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Alex Alexani, CRT, RCP, AOSPulmonary Diagnostics Certified Respiratory Therapist1396267936
  2. Htoo Htoo Aung, MDInternal Medicine Physician1942615075
  3. Connie Chan, D.O.Emergency Medicine Physician1639105745
  4. Randall Chan, MDInternal Medicine Physician1265969273
  5. Adeline ChiangCritical Care Medicine Registered Nurse1922942531
  6. Cynthia Chinn, MDAnesthesiology Physician1427355981

Verify Jeremy Demetri Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A76509
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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38% more Medicare Part D claims than the average emergency medicine physician in 2024

312 Medicare Part D claims for 191 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 22 claims were for opioids.

  1. Jeremy Williams312
  2. Specialty average226

Most prescribed

  1. Meloxicam31 claims
  2. Ondansetron Hcl29 claims
  3. Pantoprazole Sodium24 claims
  4. Prednisone23 claims
  5. Levofloxacin21 claims
  6. Gabapentin16 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: $39.98

2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jeremy Williams$39.98
  2. Specialty average$953.79

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

  1. Gem Medical Group CorporationMonterey Park, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jeremy Demetri Williams among 7,751 emergency medicine physician records in California

Jeremy Demetri Williams, M.D. 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
  • Graduated1998 · median 2011 among the 4,560 with a school on file
  • Record last updated2008 · 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).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Connie Chan, D.O.Monterey Park, CA 917541639105745
  2. Li CuiMonterey Park, CA 917541093193575
  3. Dolores De Cruz, M.D.Monterey Park, CA 917541265469696
  4. Kimberly IwakiMonterey Park, CA 917541427476266
  5. Juan Jones, M.D.Monterey Park, CA 917541194964387
  6. John Leung, MDMonterey Park, CA 917541649214198
  7. Phong Ngo, MDMonterey Park, CA 917541942243449
  8. Sharon Dabby, MDOntario, CA 917611609953124

Common questions

What is Jeremy Demetri Williams, M.D.'s NPI number?

Jeremy Demetri Williams, M.D.'s National Provider Identifier (NPI) is 1023052230, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jeremy Demetri Williams, M.D. located?

The NPPES record lists a practice address at 525 N Garfield Ave, Monterey Park, CA, 91754. Phone: (626) 307-2129. Providers update this record themselves, so call before visiting.

How can I verify Jeremy Demetri Williams, M.D.'s license?

NPPES lists California license number A76509, 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 Jeremy Demetri Williams, M.D. prescribe under Medicare Part D?

In 2024, Jeremy Demetri Williams, M.D. had 312 Medicare Part D claims for 191 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.