Maryann Nuesse, D.O.
Adult Medicine Physician · Orange, CA
Maryann Nuesse, D.O. is an adult medicine physician with a practice address in Orange, California, and NPI 1689633455, issued on Mar 21, 2006. Check the license (California 20A7305, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maryann Nuesse
- Credential
- D.O.
- Primary taxonomy
- Adult Medicine Physician 207QA0505X
- License number
- 20A7305 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 I20100304000542); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest adult medicine physician records → All 386 in California → Look up another NPI →
Also registered at 867 S Tustin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Neil ChenPhysician Assistant1710615398
- John Diab, PAPhysician Assistant1164687570
- Kenneth Grubbs, D.O.Family Medicine Physician1588773295
- William Nuesse, M.D.Adult Medicine Physician1952360729
- Simon Stephen Yao, NPFamily Nurse Practitioner1275244774
- Frank Young, M.D.General Practice Physician1447432620
Verify Maryann Nuesse in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7305Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average adult medicine physician in 2024
24 Medicare Part D claims, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D. Brand-name drugs were 67% of claims.
Most prescribed
- Latanoprost14 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.
Bills Medicare through one group practice
- 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).
Maryann Nuesse among 386 adult medicine physician records in California
Maryann Nuesse, D.O. 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
- Graduated1997 · 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.
All 386 in California → Every provider in Orange → Adult Medicine Physician nationwide →
The 8 adult medicine physician records with the nearest ZIP codes
- William Nuesse, M.D.Orange, CA 928661952360729
- Sean Breen, D.O.Orance, CA 928691780839217
- Philip Madrid, MDOrange, CA 928691578523692
- Jack Mossler, MDOrange, CA 928691619234887
- Janja Viltuznik, M.D.Orange, CA 928691639182702
- Mary Cerni, D.O.Placentia, CA 928701164519989
- Harry EisenbachVilla Park, CA 928611619597671
- Kathryn Gibbs, M.D.Villa Park, CA 928611124238308
Common questions
What is Maryann Nuesse, D.O.'s NPI number?
Maryann Nuesse, D.O.'s National Provider Identifier (NPI) is 1689633455, issued on Mar 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maryann Nuesse, D.O. 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 Maryann Nuesse, D.O.'s license?
NPPES lists California license number 20A7305, 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 Maryann Nuesse, D.O. prescribe under Medicare Part D?
In 2024, Maryann Nuesse, D.O. had 24 Medicare Part D claims; the average among adult medicine physician prescribers was 3,002. 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.