May Sahn Shung, M.D.
Obstetrics & Gynecology Physician · San Diego, CA
May Sahn Shung, M.D. is an obstetrics & gynecology physician with a practice address in San Diego, California, and NPI 1205153038, issued on May 4, 2010. Check the license (California A120202, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- May Sahn Shung
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A120202 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4647 Zion Ave, San Diego, CA 92120
- Phone
- (619) 641-2250
- Enumerated
- May 4, 2010
- Record last updated
- Oct 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20141017002118); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 4647 Zion Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samvel Abelyan, PHARMDPharmacist1306629928
- Ali Aboutaleb, MDFamily Medicine Physician1821261405
- Patricia Achilly, CNMAdvanced Practice Midwife1932257847
- Linda Adams, PAPhysician Assistant1427174689
- Mette-Margrethe Adkisson, M.D.Emergency Medicine Physician1528288081
Verify May Sahn Shung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120202Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
127 Medicare Part D claims for 47 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Estradiol31 claims
- Clobetasol Propionate27 claims
- Progesterone16 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: $17.73
1 payment: food and beverage; the largest payer was Organon 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.
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
- Southern California Permanente Medical GroupLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
May Sahn Shung among 5,088 obstetrics & gynecology physician records in California
May Sahn Shung, M.D. 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 2010, is newer than 70% of them.
- NPI issued2010 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2010 · median 2004 among the 2,700 with a school on file
- Record last updated2021 · 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 Diego → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Kaivon Arfaa, MDSan Diego, CA 921201912977463
- Bruce Bekkar, MDSan Diego, CA 921201619044583
- Richard Block, MDSan Diego, CA 921201770631673
- Silverio Chavez, MDSan Diego, CA 921201326107939
- Michael Erickson, MDSan Diego, CA 921201932257896
- Robert Hajosy, MDSan Diego, CA 921201689741514
- Danielle Hammerman, MDSan Diego, CA 921201770631632
- John KennedySan Diego, CA 921201992761654
Common questions
What is May Sahn Shung, M.D.'s NPI number?
May Sahn Shung, M.D.'s National Provider Identifier (NPI) is 1205153038, issued on May 4, 2010. An NPI identifies a provider in billing; it is not a license.
Where is May Sahn Shung, M.D. located?
The NPPES record lists a practice address at 4647 Zion Ave, San Diego, CA, 92120. Phone: (619) 641-2250. Providers update this record themselves, so call before visiting.
How can I verify May Sahn Shung, M.D.'s license?
NPPES lists California license number A120202, 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 May Sahn Shung, M.D. prescribe under Medicare Part D?
In 2024, May Sahn Shung, M.D. had 127 Medicare Part D claims for 47 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.