NPPES file of Aug 9, 2026

Diana Yun-Chi Wong, M.D.

Gynecology Physician · Tarzana, CA

Diana Yun-Chi Wong, M.D. is a gynecology physician with a practice address in Tarzana, California, and NPI 1922019637, issued on Aug 10, 2006. Check the license (California G72281, 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
1922019637
Name
Diana Yun-Chi Wong
Credential
M.D.
Primary taxonomy
Gynecology Physician 207VG0400X
License number
G72281 CA
Self-reported in NPPES; status is on the state search
Practice location
18411 Clark St, Tarzana, CA 91356
Phone
(877) 503-0518
Enumerated
Aug 10, 2006
Record last updated
Mar 6, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(877) 503-0520
Medicaid ID
00G722810 CA
Medicare enrollment
Enrolled (PECOS I20061006000340); accepts Medicare assignment
Medical or professional school
Wayne State University School Of Medicine, 1990
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.
Download card Updates feed

8 nearest gynecology physician records → All 369 in California → Look up another NPI →

Also registered at 18411 Clark St

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

  1. Arieh Bergman, M.D.,Gynecology Physician1629179932
  2. Theresa Daggi, NP-CAdult Health Nurse Practitioner1598189755
  3. Avron Daniller, M.D.Plastic Surgery Physician1952457673
  4. Sonia DelacruzSpecialist1083005672
  5. Karyn Gross, MDGynecology Physician1922082452
  6. Allen Hoffman, M.D.Surgery Physician1881605848

Verify Diana Yun-Chi Wong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G72281    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

25% more Medicare Part D claims than the average gynecology physician in 2024

374 Medicare Part D claims for 100 beneficiaries, against an average of 299 among the 1,919 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.

  1. Diana Wong374
  2. Specialty average299

Most prescribed

  1. Estradiol104 claims
  2. Progesterone45 claims
  3. Estradiol (Twice Weekly)25 claims
  4. Medroxyprogesterone Acetate21 claims
  5. Dotti18 claims
  6. Estradiol-Norethindrone Acetat18 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: $1,921.95

6 payments; by number, the most common kind was consulting fee; the largest payer was Mimedx Group, 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. Diana Wong$1,921.95
  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. Providence Facey Medical FoundationMission Hills, CA

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

Diana Yun-Chi Wong among 369 gynecology physician records in California

Diana Yun-Chi Wong, M.D. 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 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 40% newer
  • In a Medicare fileYes · 60% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated1990 · median 1995 among the 141 with a school on file
  • Record last updated2014 · 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.

All 369 in California → Every provider in Tarzana → Gynecology Physician nationwide →

The 8 gynecology physician records with the nearest ZIP codes

  1. Roy Ayalon, M.D.Tarzana, CA 913561154599546
  2. Arieh Bergman, M.D.,Tarzana, CA 913561629179932
  3. Karyn Gross, MDTarzana, CA 913561922082452
  4. Dennis Perlow, M.D.Tarzana, CA 913561033104823
  5. Jane Udkoff, M.D.Westlake Village, CA 913621205075843
  6. Parichehr Allameh, M.D.Sylmar, CA 913421053434563
  7. Malaika Amneus, M.D.Sylmar, CA 913421538379706
  8. Dafna Trites, D.O.Northridge, CA 913251699734319

Common questions

What is Diana Yun-Chi Wong, M.D.'s NPI number?

Diana Yun-Chi Wong, M.D.'s National Provider Identifier (NPI) is 1922019637, issued on Aug 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Diana Yun-Chi Wong, M.D. located?

The NPPES record lists a practice address at 18411 Clark St, Tarzana, CA, 91356. Phone: (877) 503-0518. Providers update this record themselves, so call before visiting.

How can I verify Diana Yun-Chi Wong, M.D.'s license?

NPPES lists California license number G72281, 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 Diana Yun-Chi Wong, M.D. prescribe under Medicare Part D?

In 2024, Diana Yun-Chi Wong, M.D. had 374 Medicare Part D claims for 100 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.