Mark Gau Man Lo, MD
Psychiatry Physician · Patton, CA
Mark Gau Man Lo, MD is a psychiatry physician with a practice address in Patton, California, and NPI 1578515391, issued on May 17, 2006. Check the license (California A52787, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Gau Man Lo
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A52787 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3102 East Highland Ave, Patton, CA 92369
- Phone
- (909) 425-7000
- Enumerated
- May 17, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (909) 425-7520
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 3102 East Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Gau Man Lo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A52787Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average psychiatry physician in 2024
26 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
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.
Mark Gau Man Lo among 8,673 psychiatry physician records in California
Mark Gau Man Lo, 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 updated2026 · 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).
79 psychiatry physician records list a practice address in Patton
They are 79 of the 339 NPPES records with a practice address in Patton, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Patton → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Tim Alder, M.D.Patton, CA 923691619929023
- Ai Li Arias, M.D.Patton, CA 923691134171598
- Roger Cabansag, M.D.Patton, CA 923691063464352
- Edward Case, MDPatton, CA 923691407808785
- Manuel Desagun, MDPatton, CA 923691518919802
- Ron Foo, MDPatton, CA 923691578515813
- Greta Herbes, M.D.Patton, CA 923691619929171
- Joshua Horsley, M.D.Patton, CA 923691316999733
Common questions
What is Mark Gau Man Lo, MD's NPI number?
Mark Gau Man Lo, MD's National Provider Identifier (NPI) is 1578515391, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Gau Man Lo, MD located?
The NPPES record lists a practice address at 3102 East Highland Ave, Patton, CA, 92369. Phone: (909) 425-7000. Providers update this record themselves, so call before visiting.
How can I verify Mark Gau Man Lo, MD's license?
NPPES lists California license number A52787, 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 Mark Gau Man Lo, MD prescribe under Medicare Part D?
In 2024, Mark Gau Man Lo, MD had 26 Medicare Part D claims; 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.