NPPES file of Aug 9, 2026

Heidi Chen Chew, MD, MBA

Gynecology Physician · Fontana, CA

Heidi Chen Chew, MD, MBA is a gynecology physician with a practice address in Fontana, California, and NPI 1962684308, issued on Nov 28, 2007. Check the license (California A113910, 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
1962684308
Name
Heidi Chen Chew
Credential
MD, MBA
Primary taxonomy
Gynecology Physician 207VG0400X
License numbers
A113910 CA
046512 CT
Self-reported in NPPES; status is on the state search
Practice location
9985 Sierra Ave, Fontana, CA 92335
Phone
(909) 427-5826
Enumerated
Nov 28, 2007
Record last updated
Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(909) 429-5219
Medicare enrollment
Enrolled (PECOS I20111116000725); accepts Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 2004
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 9985 Sierra Ave

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

  1. Olga Acosta, MDPediatrics Physician1861404832
  2. Najjia Ahmed, M.D.Pediatrics Physician1699110395
  3. Anje'Le AlstonSports Medicine (Internal Medicine) Physician1356970842
  4. Peyman Andalib, MDStudent in an Organized Health Care Education/Training Program1104028000
  5. Gerald ArafolOccupational Therapist1134315666
  6. Lovie Jay Arguelles, PTPhysical Therapist1457472920

Verify Heidi Chen Chew in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A113910
    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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3.4 times the Medicare Part D claims of the average gynecology physician in 2024

1,009 Medicare Part D claims for 353 beneficiaries, against an average of 299 among the 1,919 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims. 60 claims were for opioids.

  1. Heidi Chew1,009
  2. Specialty average299

Most prescribed

  1. Myrbetriq196 claims
  2. Estradiol185 claims
  3. Trospium Chloride105 claims
  4. Solifenacin Succinate71 claims
  5. Mirabegron Er62 claims
  6. Oxybutynin Chloride Er54 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: $156.57

1 payment: food and beverage; the largest payer was Medtronic, Inc. The 1,398 providers of this specialty with any payment received $2,469.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Heidi Chew$156.57
  2. Specialty average$2,469.88

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. Southern California Permanente Medical GroupOntario, CA

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

Heidi Chen Chew among 369 gynecology physician records in California

Heidi Chen Chew, MD, MBA is one of 369 gynecology physician records with a practice address in California. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 60% of them.

  • NPI issued2007 · 60% of these records are older, 24% newer
  • In a Medicare fileYes · 60% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated2004 · median 1995 among the 141 with a school on file
  • Record last updated2021 · 70% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VG0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gynecology Physician providers in California

There are 369 gynecology physician records in California.

The 8 gynecology physician records with the nearest ZIP codes

  1. Hugo Rauld, MDColton, CA 923241962587998
  2. Andre Kasko, D.O.Yucca Valley, CA 922841679624191
  3. John Bednar, M.D.Rancho Mirage, CA 922701255391520
  4. Jeralyn Brossfield, MDRancho Mirage, CA 922701073689683
  5. Christine Griswold, MDRancho Mirage, CA 922701083609390
  6. Elisa Lindley, MDRancho Mirage, CA 922701639158694
  7. John Demersseman, M.D.Palm Springs, CA 922621194785758
  8. Jeannie Needham, M.D.Indian Wells, CA 922101831349604

Common questions

What is Heidi Chen Chew, MD, MBA's NPI number?

Heidi Chen Chew, MD, MBA's National Provider Identifier (NPI) is 1962684308, issued on Nov 28, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Heidi Chen Chew, MD, MBA located?

The NPPES record lists a practice address at 9985 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-5826. Providers update this record themselves, so call before visiting.

How can I verify Heidi Chen Chew, MD, MBA's license?

NPPES lists California license number A113910, 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 Heidi Chen Chew, MD, MBA prescribe under Medicare Part D?

In 2024, Heidi Chen Chew, MD, MBA had 1,009 Medicare Part D claims for 353 beneficiaries; the average among gynecology physician prescribers was 299. 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.