Dirk Harmen Mous, MD
Family Medicine Physician · Merced, CA
Dirk Harmen Mous, MD is a family medicine physician with a practice address in Merced, California, and NPI 1538262522, issued on Sep 6, 2006. Check the license (California G37895, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dirk Harmen Mous
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G37895 CA
Self-reported in NPPES; status is on the state search - Practice location
- 374 W Olive Avenue, Merced, CA 95348
- Phone
- (209) 383-3076
- Enumerated
- Sep 6, 2006
- Record last updated
- Mar 30, 2023
- Fax
- (209) 383-6301
- Medicaid ID
- 00G378950 CA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 374 W Olive Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Leonard Oestreicher, MDFamily Medicine Physician1033212022
Verify Dirk Harmen Mous in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G37895Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average family medicine physician in 2024
3,609 Medicare Part D claims for 280 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 138 claims were for opioids.
Most prescribed
- Levothyroxine Sodium216 claims
- Amlodipine Besylate195 claims
- Atorvastatin Calcium168 claims
- Losartan Potassium168 claims
- Metformin Hcl125 claims
- Metoprolol Succinate108 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $817.65
45 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Dirk Harmen Mous among 17,133 family medicine physician records in California
Dirk Harmen Mous, MD is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
94 family medicine physician records list a practice address in Merced
They are 94 of the 2,836 NPPES records with a practice address in Merced, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Merced → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Brandon Boggs, MDMerced, CA 953481386655520
- Douglas Eck, MDMerced, CA 953481144323189
- Roger Fife, M.D.Merced, CA 953481548207590
- Eugenia Garcia, M.D.Merced, CA 953481265483622
- Charlie Kano, MDMerced, CA 953481003927567
- Daniel Leong, MDMerced, CA 953481518119510
- Grant Medefind, M.D.Merced, CA 953481437366069
- Leonard Oestreicher, MDMerced, CA 953481033212022
Common questions
What is Dirk Harmen Mous, MD's NPI number?
Dirk Harmen Mous, MD's National Provider Identifier (NPI) is 1538262522, issued on Sep 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dirk Harmen Mous, MD located?
The NPPES record lists a practice address at 374 W Olive Avenue, Merced, CA, 95348. Phone: (209) 383-3076. Providers update this record themselves, so call before visiting.
How can I verify Dirk Harmen Mous, MD's license?
NPPES lists California license number G37895, 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 Dirk Harmen Mous, MD prescribe under Medicare Part D?
In 2024, Dirk Harmen Mous, MD had 3,609 Medicare Part D claims for 280 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Dirk Harmen Mous, MD's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.