NPPES file of Aug 9, 2026

Dong Ha Hwang, MD

Obstetrics & Gynecology Physician · San Francisco, CA

Dong Ha Hwang, MD is an obstetrics & gynecology physician with a practice address in San Francisco, California, and NPI 1700951233, issued on Nov 21, 2006. Check the license (California A42394, 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
1700951233
Name
Dong Ha Hwang
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A42394 CA
Self-reported in NPPES; status is on the state search
Practice location
1520 Stockton St, San Francisco, CA 94133
Phone
(415) 391-9686
Enumerated
Nov 21, 2006
Record last updated
Aug 17, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(415) 398-1743
Medicaid ID
00A423940 CA
Medicare enrollment
Enrolled (PECOS I20081231000512); accepts Medicare assignment
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 1520 Stockton St

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

  1. Mai Abdelnabi, MDRheumatology Physician1013394980
  2. Sabi Ahmed, M.D.Family Medicine Physician1760630461
  3. Christine Anne Alvarez, RNRegistered Nurse1740928647
  4. Alice ChanRegistered Nurse1184408536
  5. Beverley Chan, PHARM DPharmacist1942750260
  6. Lily Chan, R.N.Community Health Registered Nurse1073868659

Verify Dong Ha Hwang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A42394
    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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91% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

15 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.

  1. Dong Hwang15
  2. Specialty average165

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: $48.10

2 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Dong Hwang$48.10
  2. Specialty average$1,030.61

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. North East Medical ServicesSan Francisco, CA

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

Dong Ha Hwang among 5,088 obstetrics & gynecology physician records in California

Dong Ha Hwang, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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 5% of them.

  • NPI issued2006 · 5% of these records are older, 52% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated1971 · median 2004 among the 2,700 with a school on file
  • Record last updated2018 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in California

There are 5,088 obstetrics & gynecology physician records in California.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Esther Chang, M.D.San Francisco, CA 941331699764274
  2. John Ho, M.D.San Francisco, CA 941331073540225
  3. Rena Hu, M.D.San Francisco, CA 941331275774374
  4. Leonard Rothman, M.D.San Francisco, CA 941331275807323
  5. Audrey Sue-Matsumoto, MDSan Francisco, CA 941331942569918
  6. Jonathan Wong, MDSan Francisco, CA 941331780750588
  7. Samuel Young, M.D.San Francisco, CA 941331588737894
  8. Ziyad Hannon, M.D.San Francisco, CA 941321942206560

Common questions

What is Dong Ha Hwang, MD's NPI number?

Dong Ha Hwang, MD's National Provider Identifier (NPI) is 1700951233, issued on Nov 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Dong Ha Hwang, MD located?

The NPPES record lists a practice address at 1520 Stockton St, San Francisco, CA, 94133. Phone: (415) 391-9686. Providers update this record themselves, so call before visiting.

How can I verify Dong Ha Hwang, MD's license?

NPPES lists California license number A42394, 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 Dong Ha Hwang, MD prescribe under Medicare Part D?

In 2024, Dong Ha Hwang, MD had 15 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.