NPPES file of Aug 9, 2026

Michael Sung

Surgery Physician · Oakland, CA

Michael Sung is a surgery physician with a practice address in Oakland, California, and NPI 1225423072, issued on Mar 30, 2015. Check the license (California A144066, 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
1225423072
Name
Michael Sung
Primary taxonomy
Surgery Physician 208600000X
License number
A144066 CA
Self-reported in NPPES; status is on the state search
Practice location
365 Hawthorne Ave Ste 101, Oakland, CA 94609
Phone
(510) 465-5523
Enumerated
Mar 30, 2015
Record last updated
Feb 11, 2025
Fax
(510) 832-6061
Medicare enrollment
Enrolled (PECOS I20200715000168); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 2015
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

Also registered at 365 Hawthorne Ave Ste 101

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

  1. Katherine Burns, PASurgical Physician Assistant1467975953
  2. Nikhilesh ChitibommaStudent in an Organized Health Care Education/Training Program1063031896
  3. Nicholas Gonsalves, M.D.Surgery Physician1124553987
  4. Jennifer Lee, M.D.Surgery Physician1770937641
  5. Hnoukaj Lyfoung, MDSurgery Physician1053774919
  6. Benjamin Sopczynski, M.D.Surgery Physician1336554708

Verify Michael Sung in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A144066
    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.

73% fewer Medicare Part D claims than the average surgery physician in 2024

40 Medicare Part D claims, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.

  1. Michael Sung40
  2. Specialty average147

Most prescribed

  1. Pantoprazole Sodium31 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: $843.55

11 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Sung$843.55
  2. Specialty average$3,513.80

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. Bass Medical GroupAlamo, CA

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

Michael Sung among 3,118 surgery physician records in California

Michael Sung is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 80% of them.

  • NPI issued2015 · 80% of these records are older, 17% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2015 · median 2003 among the 1,901 with a school on file
  • Record last updated2025 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in California

There are 3,118 surgery physician records in California.

The 8 surgery physician records with the nearest ZIP codes

  1. David Blumberg, MDOakland, CA 946091295890440
  2. Gregory Broderick-Villa, MDOakland, CA 946091376571562
  3. Kenneth Chang, M.D.Oakland, CA 946091952544355
  4. Jon Greif, D.O.Oakland, CA 946091306958095
  5. Rupert Horoupian, MDOakland, CA 946091184686156
  6. Diane Kwan, M.D.Oakland, CA 946091992913859
  7. Collin Mbanugo, M.D.Oakland, CA 946091134271471
  8. Oleg Merzlikin, MDOakland, CA 946091568760643

Common questions

What is Michael Sung's NPI number?

Michael Sung's National Provider Identifier (NPI) is 1225423072, issued on Mar 30, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Michael Sung located?

The NPPES record lists a practice address at 365 Hawthorne Ave Ste 101, Oakland, CA, 94609. Phone: (510) 465-5523. Providers update this record themselves, so call before visiting.

How can I verify Michael Sung's license?

NPPES lists California license number A144066, 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 Michael Sung prescribe under Medicare Part D?

In 2024, Michael Sung had 40 Medicare Part D claims; the average among surgery physician prescribers was 147. 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.