Hei Ieong Lou, PA-C
Physician Assistant · Mountain View, CA
Hei Ieong Lou, PA-C is a physician assistant with a practice address in Mountain View, California, and NPI 1225857642, issued on Oct 3, 2024. Check the license (California 1226155, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Hei Ieong Lou
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 1226155 CA
Self-reported in NPPES; status is on the state search - Practice location
- 525 South Dr Ste 211, Mountain View, CA 94040
- Phone
- (408) 495-5770
- Enumerated
- Oct 3, 2024
- Record last updated
- May 29, 2025
- Fax
- (650) 912-1129
- Medicare enrollment
- Enrolled (PECOS I20250317003149); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2024
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 525 South Dr Ste 211
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Hei Ieong Lou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 1226155Check 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 physician assistant in 2024
12 Medicare Part D claims, against an average of 830 among the 101,058 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.
Industry payments in 2024: $21.78
1 payment: food and beverage; the largest payer was Gilead Sciences, Inc. The 64,719 providers of this specialty with any payment received $841.65 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.
Bills Medicare through one group practice
- Patricia Sitnitsky PCLos Altos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hei Ieong Lou among 14,451 physician assistant records in California
Hei Ieong Lou, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 87% of them.
- NPI issued2024 · 87% of these records are older, 7% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2024 · median 2018 among the 7,214 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
92 physician assistant records list a practice address in Mountain View
They are 92 of the 2,467 NPPES records with a practice address in Mountain View, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Mountain View → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Federico Campos, PAMountain View, CA 940401497764294
- Diane Dressman, MDMountain View, CA 940401184799264
- Florence Garrett, PA-CMountain View, CA 940401710052857
- Kate Gladman, P.A-CMountain View, CA 940401699720755
- Crystal GrundMountain View, CA 940401720151764
- Edward Hahm, PAMountain View, CA 940401003830639
- Melody Ow, PA-CMountain View, CA 940401114029634
- Karen Perls, PA-CMountain View, CA 940401689775686
Common questions
What is Hei Ieong Lou, PA-C's NPI number?
Hei Ieong Lou, PA-C's National Provider Identifier (NPI) is 1225857642, issued on Oct 3, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Hei Ieong Lou, PA-C located?
The NPPES record lists a practice address at 525 South Dr Ste 211, Mountain View, CA, 94040. Phone: (408) 495-5770. Providers update this record themselves, so call before visiting.
How can I verify Hei Ieong Lou, PA-C's license?
NPPES lists California license number 1226155, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Hei Ieong Lou, PA-C prescribe under Medicare Part D?
In 2024, Hei Ieong Lou, PA-C had 12 Medicare Part D claims; the average among physician assistant prescribers was 830. 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.