Michael Steven Loose, MD
Psychiatry Physician · Napa, CA
Michael Steven Loose, MD is a psychiatry physician with a practice address in Napa, California, and NPI 1306864756, issued on Jul 17, 2006. Check the license (California G84055, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Steven Loose
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- G84055 CA
23819 SC
Self-reported in NPPES; status is on the state search - Practice location
- 1032 Walnut St, Napa, CA 94559
- Phone
- (707) 256-3550
- Enumerated
- Jul 17, 2006
- Record last updated
- Dec 28, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (707) 256-3553
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1032 Walnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelli Wall, LMFTMarriage & Family Therapist1720594468
Verify Michael Steven Loose in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G84055Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average psychiatry physician in 2024
384 Medicare Part D claims for 26 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Vraylar28 claims
- Dextroamphetamine-Amphetamine25 claims
- Risperidone22 claims
- Sertraline Hcl21 claims
- Vyvanse21 claims
- Vilazodone Hcl20 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.
Industry payments in 2024: $307.59
10 payments; by number, the most common kind was food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 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.
Michael Steven Loose among 8,673 psychiatry physician records in California
Michael Steven Loose, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2018 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
97 psychiatry physician records list a practice address in Napa
They are 97 of the 3,583 NPPES records with a practice address in Napa, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Napa → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Angel Aguilera, MDNapa, CA 945591063806743
- Craig Beaty, D.ONapa, CA 945591194787507
- Sarah Ferries, M.D.Napa, CA 945591649284274
- Richard Forde, M.D.Napa, CA 945591033272315
- John Fordham, DONapa, CA 945591225464993
- Qyana Griffith, MD, MANapa, CA 945591255674495
- Sigurdur Hektorsson, M.D.Napa, CA 945591447534029
- Micah Hoffman, MDNapa, CA 945591649565417
Common questions
What is Michael Steven Loose, MD's NPI number?
Michael Steven Loose, MD's National Provider Identifier (NPI) is 1306864756, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Steven Loose, MD located?
The NPPES record lists a practice address at 1032 Walnut St, Napa, CA, 94559. Phone: (707) 256-3550. Providers update this record themselves, so call before visiting.
How can I verify Michael Steven Loose, MD's license?
NPPES lists California license number G84055, 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 Michael Steven Loose, MD prescribe under Medicare Part D?
In 2024, Michael Steven Loose, MD had 384 Medicare Part D claims for 26 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.