Monica Gar-Ying Ou, MD
Hospitalist Physician · Sacramento, CA
Monica Gar-Ying Ou, MD is a hospitalist physician with a practice address in Sacramento, California, and NPI 1295484848, issued on Mar 21, 2022. Check the license (California A189983, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Monica Gar-Ying Ou
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A189983 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2025 Morse Ave, Sacramento, CA 95825
- Phone
- (916) 973-6097
- Enumerated
- Mar 21, 2022
- Record last updated
- Aug 30, 2025
- Medicare enrollment
- Enrolled (PECOS I20251105003606); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 2025 Morse Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Monica Gar-Ying Ou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A189983Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average hospitalist physician in 2024
84 Medicare Part D claims for 41 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Metoprolol Succinate11 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
- Permanente Medical Group IncSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Monica Gar-Ying Ou among 3,099 hospitalist physician records in California
Monica Gar-Ying Ou, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 2% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2022 · median 2010 among the 2,505 with a school on file
- Record last updated2025 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Sacramento → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Ritu Bhatnagar, MDSacramento, CA 958251699853341
- Rizwana Chaudhry, MDSacramento, CA 958251104905249
- Gene Choi, MDSacramento, CA 958251629156336
- John Fitz Gibbon, MDSacramento, CA 958251568540250
- Melody Hsieh, MDSacramento, CA 958251861570541
- Phil Kang, MDSacramento, CA 958251932271749
- Huong Le, MDSacramento, CA 958251992883607
- Dharmendrakumar Patel, MDSacramento, CA 958251023196748
Common questions
What is Monica Gar-Ying Ou, MD's NPI number?
Monica Gar-Ying Ou, MD's National Provider Identifier (NPI) is 1295484848, issued on Mar 21, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Monica Gar-Ying Ou, MD located?
The NPPES record lists a practice address at 2025 Morse Ave, Sacramento, CA, 95825. Phone: (916) 973-6097. Providers update this record themselves, so call before visiting.
How can I verify Monica Gar-Ying Ou, MD's license?
NPPES lists California license number A189983, 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 Monica Gar-Ying Ou, MD prescribe under Medicare Part D?
In 2024, Monica Gar-Ying Ou, MD had 84 Medicare Part D claims for 41 beneficiaries; the average among hospitalist physician prescribers was 521. 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.