Cheresa C. Ng, MD
Obstetrics & Gynecology Physician · San Francisco, CA
Cheresa C. Ng, MD is an obstetrics & gynecology physician with a practice address in San Francisco, California, and NPI 1902851504, issued on May 23, 2006. Check the license (California G81035, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cheresa C. Ng
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G81035 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2250 Hayes St Ste 408, San Francisco, CA 94117
- Phone
- (415) 221-6668
- Enumerated
- May 23, 2006
- Record last updated
- Dec 26, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (415) 221-2942
- Medicaid ID
- OOG810350 CA
- Medicare enrollment
- Enrolled (PECOS I20090916000120); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Cheresa C. Ng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G81035Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
423 Medicare Part D claims for 194 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Clotrimazole-Betamethasone108 claims
- Estradiol62 claims
- Fluconazole37 claims
- Ciprofloxacin Hcl33 claims
- Metronidazole28 claims
- Nitrofurantoin Mono-Macro19 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: $182.17
4 payments; by number, the most common kind was food and beverage; the largest payer was Medical Device Business Services, Inc. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Cheresa C. Ng among 5,088 obstetrics & gynecology physician records in California
Cheresa C. Ng, 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
- Graduated1993 · median 2004 among the 2,700 with a school on file
- Record last updated2019 · 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.
All 5,088 in California → Every provider in San Francisco → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Mary Norton, M.D.San Francisco, CA 941171629007091
- Catherine Berger-Dujmovic, MDSan Francisco, CA 941181467470070
- Kathryn ClarkSan Francisco, CA 941181154349769
- Jacqueline Fletcher, M.D.San Francisco, CA 941181982796009
- Nelden HagbomSan Francisco, CA 941181467481655
- Holly HolterSan Francisco, CA 941181740219815
- Susan HuangSan Francisco, CA 941181518057322
- Madelyn Kahn, MDSan Francisco, CA 941181861576126
Common questions
What is Cheresa C. Ng, MD's NPI number?
Cheresa C. Ng, MD's National Provider Identifier (NPI) is 1902851504, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cheresa C. Ng, MD located?
The NPPES record lists a practice address at 2250 Hayes St Ste 408, San Francisco, CA, 94117. Phone: (415) 221-6668. Providers update this record themselves, so call before visiting.
How can I verify Cheresa C. Ng, MD's license?
NPPES lists California license number G81035, 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 Cheresa C. Ng, MD prescribe under Medicare Part D?
In 2024, Cheresa C. Ng, MD had 423 Medicare Part D claims for 194 beneficiaries; 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.