NPPES file of Aug 9, 2026

William H. Nuesse, M.D.

Adult Medicine Physician · Orange, CA

William H. Nuesse, M.D. is an adult medicine physician with a practice address in Orange, California, and NPI 1952360729, issued on Mar 21, 2006. Check the license (California A49740, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1952360729
Name
William H. Nuesse
Credential
M.D.
Primary taxonomy
Adult Medicine Physician 207QA0505X
License number
A49740 CA
Self-reported in NPPES; status is on the state search
Practice location
867 S Tustin St, Orange, CA 92866
Phone
(714) 771-1420
Enumerated
Mar 21, 2006
Record last updated
Jun 25, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(714) 771-6918
Medicare enrollment
Enrolled (PECOS I20100304000572); 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 867 S Tustin St

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

  1. Neil ChenPhysician Assistant1710615398
  2. John Diab, PAPhysician Assistant1164687570
  3. Kenneth Grubbs, D.O.Family Medicine Physician1588773295
  4. Maryann Nuesse, D.O.Adult Medicine Physician1689633455
  5. Simon Stephen Yao, NPFamily Nurse Practitioner1275244774
  6. Frank Young, M.D.General Practice Physician1447432620

Verify William H. Nuesse in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A49740
    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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Bills Medicare through one group practice

  1. William H Nuesse M D And Mary Ann Nuesse D O A Medical CorporationOrange, CA

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

William H. Nuesse among 386 adult medicine physician records in California

William H. Nuesse, M.D. is one of 386 adult medicine physician records with a practice address in California. 69% 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 3% of them.

  • NPI issued2006 · 3% of these records are older, 65% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 48% of these records are
  • Graduated1981 · median 2005 among the 187 with a school on file
  • Record last updated2017 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0505X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Medicine Physician providers in California

There are 386 adult medicine physician records in California.

The 8 adult medicine physician records with the nearest ZIP codes

  1. Maryann Nuesse, D.O.Orange, CA 928661689633455
  2. Sean Breen, D.O.Orance, CA 928691780839217
  3. Philip Madrid, MDOrange, CA 928691578523692
  4. Jack Mossler, MDOrange, CA 928691619234887
  5. Janja Viltuznik, M.D.Orange, CA 928691639182702
  6. Mary Cerni, D.O.Placentia, CA 928701164519989
  7. Harry EisenbachVilla Park, CA 928611619597671
  8. Kathryn Gibbs, M.D.Villa Park, CA 928611124238308

Common questions

What is William H. Nuesse, M.D.'s NPI number?

William H. Nuesse, M.D.'s National Provider Identifier (NPI) is 1952360729, issued on Mar 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William H. Nuesse, M.D. located?

The NPPES record lists a practice address at 867 S Tustin St, Orange, CA, 92866. Phone: (714) 771-1420. Providers update this record themselves, so call before visiting.

How can I verify William H. Nuesse, M.D.'s license?

NPPES lists California license number A49740, 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.

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.