Dr. Loi Lam, MD
- Medicare services, 2024
- 59
- Medicare patients, 2024
- 36
- Part D claims, 2024
- 526
- Hospital affiliations
- 1
- Industry payments
- $122
- Practice address
- 975 Sereno Dr, Vallejo, CA 94589
- Practice phone
- Call (707) 651-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lam's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Loi Lam is an internist in Vallejo, California
Dr. Lam practices at Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente.
Dr. Lam's NPI, 1861692964, was assigned on July 18, 2007. Dr. Lam graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2005. Dr. Lam holds California license A99203.
- NPI
- 1861692964NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719048388
- NPI enumeration date
- July 18, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 651-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Loi Lam practices at Vallejo Medical Center in Vallejo, California
Dr. Lam's primary practice is Vallejo Medical Center, at 975 Sereno Dr, Vallejo, CA 94589 in Solano County. The practice phone is (707) 651-1000.
- Vallejo Medical Center975 Sereno Dr, Vallejo, CA 94589 · Solano CountyPhone(707) 651-1000
Source: Dmand AI Affiliation Data
Dr. Loi Lam is affiliated with 3 sites of care and 1 medical group
Dr. Lam's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Lam to 1 more home health agency and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Loi Lam's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lam practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vallejo Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Loi Lam is one of 16,751 internists in California
Internal medicine is Dr. Lam's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Lam is board certified in internal medicine by the American Board of Internal Medicine. Dr. Lam is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists gastrointestinal bleeding among the conditions Dr. Lam treats.
Internists near Dr. Lam
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Loi Lam billed Medicare for 59 services in 2024
CMS data shows 59 Medicare services from Dr. Lam across 1 procedure code in 2024, for 36 Medicare patients. Medicare paid $3,800 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lam's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 462024: 5928%
Dr. Lam compared with the California median for internists, 2024
- Dr. Lam
- California median
- Medicare services
- 59vs 36184% below
- Medicare patients
- 36vs 15176% below
- Part D claims
- 250vs 42141% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Lam's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lam and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Loi Lam treated 36 Medicare patients in 2024, average age 72
CMS counts 36 Medicare patients who saw Dr. Lam in 2024. The largest group is 65 to 74, with 17 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 67% are also on Medicaid. Their average risk score is 3.13, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lam's median patient age at 71, with 45% women.
Dr. Lam's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lam's Medicare patients by sex, 2024
- Women2158%
- Men1542%
Chronic conditions among Dr. Lam's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease61%
- Heart failure56%
- Diabetes53%
- Arthritis44%
- Asthma44%
- COPD42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lam's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Loi Lam wrote 526 Medicare Part D claims in 2024
In 2024, Dr. Lam wrote 526 Medicare Part D claims for 145 patients. 91% of them were for generic drugs. CMS names the drug for 250 of them, across 13 drugs with 11 or more claims each, at $3,070 in total drug cost. In 2023, CMS named 194 claims across 11 drugs.
Dr. Lam's Part D claims by kind of drug, 2024
- Generic477 claims91%
- Brand-name and other49 claims9%
Dr. Lam's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Lam's Part D claims, 2024
- Opioids3%15 of 526 claims
- Antibiotics9%49 of 526 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1942024: 25029%
Drugs named by CMS: 13 in 2024, 11 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Loi Lam takes part in Medicare
Dr. Lam accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Loi Lam received $122 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Lam from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $122.
Companies that paid Dr. Lam the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Loi Lam graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science
Dr. Lam graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2005. Dr. Lam is a member of ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Loi Lam accepts plans from 2 insurance carriers
Dr. Lam is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Lam accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Loi Lam's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Loi Lam
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Loi Lam's NPI number?
Dr. Loi Lam's NPI number is 1861692964. It was assigned on July 18, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Loi Lam?
Dr. Loi Lam is an internist in Vallejo, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Loi Lam practice?
Dr. Lam practices at 975 Sereno Dr, Vallejo, CA 94589. Dr. Lam's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. Dmand AI also links Dr. Lam to 1 home health agency and 1 hospice.
What is Dr. Loi Lam's office phone number?
The practice phone on file for Dr. Lam is (707) 651-1000.
What is Dr. Loi Lam's medical license number?
Dr. Lam holds California license A99203.
Which hospitals is Dr. Loi Lam affiliated with?
Dr. Lam practices at Vallejo Medical Center in Vallejo, California.
What medical group is Dr. Loi Lam part of?
Dr. Lam is linked to The Permanente Medical Group, Inc.
Does Dr. Loi Lam accept Medicare?
Yes. CMS data shows Dr. Lam billed Medicare for 59 services in 2024, and Dr. Lam accepts Medicare assignment.
How many Medicare patients does Dr. Loi Lam see?
CMS counts 36 Medicare patients who saw Dr. Lam in 2024, with an average age of 72.
Is Dr. Loi Lam board certified?
Yes. Dr. Lam is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Loi Lam bill to Medicare?
In 2024, Dr. Lam's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Loi Lam go to medical school?
Dr. Lam graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2005.
What drugs does Dr. Loi Lam prescribe most?
In 2024 Medicare Part D data, Dr. Lam's most prescribed drugs by claims were Metoprolol Succinate, Amlodipine Besylate and Furosemide.
Has Dr. Loi Lam received payments from drug or device companies?
CMS Open Payments shows $122 in general payments to Dr. Lam from 1 company from 2021 to 2021. The largest total came from Alexion Pharmaceuticals, Inc.
How long has Dr. Loi Lam been practicing?
Dr. Lam graduated from medical school in 2005, 21 years ago.
What insurance does Dr. Loi Lam accept?
Dr. Lam is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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