Registry data as of Aug 27, 2026

Sung Knueppel, MD

Family Medicine Physician · Redwood City, CA

Sung Knueppel, MD is a family medicine physician with a practice address in Redwood City, California, and NPI 1407967680, issued on Aug 31, 2006. Check the license (California A90498, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1407967680
Name
Sung Knueppel
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A90498 CA
Self-reported in NPPES; status is on the state search
Practice location
805 Veterans Blvd, Redwood City, CA 94063
Phone
(650) 853-6600
Enumerated
Aug 31, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 805 Veterans Blvd

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

  1. Kelly Bringino, DPTPhysical Therapist1356475966
  2. Avinash Mamidi, PHARMGeriatric Pharmacist1588981880
  3. Anna Ranes, D.P.T.Physical Therapist1356642938
  4. Henry Upton, M.D.Ophthalmology Physician1285732669
  5. David Weisenberg, M.D.Specialist1346288545
  6. Amy WilliamsPhysical Therapist1801263967

Verify Sung Knueppel in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A90498
    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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

80% fewer Medicare Part D claims than the average family medicine physician in 2024

717 Medicare Part D claims for 106 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Sung Knueppel717
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium70 claims
  2. Levothyroxine Sodium49 claims
  3. Lisinopril32 claims
  4. Amlodipine Besylate26 claims
  5. Losartan Potassium26 claims
  6. Metformin Hcl Er25 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.

One hospital or facility affiliation

  1. Permanente Medical Group IncSanta Clara, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Family Medicine Physician providers in California

There are 17,133 family medicine physician records in California.

Other family medicine physician records in California

  1. Omer Aba-Omer, MDSanta Monica, CA1649702093
  2. Michelle Ababa, MDWilmington, CA1710922513
  3. Anna Tzeitel Abalos, MDRoseville, CA1720200017
  4. Adan Abarca, MDAnaheim, CA1760553689
  5. Vanessa Abarca, DOVentura, CA1952040859
  6. Lorraine Abate, M.D.Sacramento, CA1104840008
  7. Robert Abatecola, MDCastro Valley, CA1669551719
  8. Romeo Abaya, M.D.Cottonwood, CA1598053506
  9. Effiem Abbah, MD, MPHSan Francisco, CA1821185133
  10. Khuzeman Abbasi, MDSanta Rosa, CA1841979952

Common questions

What is Sung Knueppel, MD's NPI number?

Sung Knueppel, MD's National Provider Identifier (NPI) is 1407967680, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sung Knueppel, MD located?

The NPPES record lists a practice address at 805 Veterans Blvd, Redwood City, CA, 94063. Phone: (650) 853-6600. Providers update this record themselves, so call before visiting.

How can I verify Sung Knueppel, MD's license?

NPPES lists California license number A90498, 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 Sung Knueppel, MD prescribe under Medicare Part D?

In 2024, Sung Knueppel, MD had 717 Medicare Part D claims for 106 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.