Dr. Diana W. Lau, MD
- Medicare services, 2024
- 5,084
- Medicare patients, 2024
- 432
- Part D claims, 2024
- 4,012
- MIPS score, 2024
- 100
- Hospital affiliations
- 5
- Practice address
- 632 W. Gibson Rd, Woodland, CA 95695
- Practice phone
- Call (530) 668-2632
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Primary & Specialty Care - Dignity Health Woodland Clinic
Mammography / Breast Imaging Center · Woodland, California
Find Dr. Lau'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. Diana W. Lau is a rheumatologist in Woodland, California
Dr. Lau practices at Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California.
Dr. Lau's NPI, 1770506537, was assigned on July 25, 2006. Dr. Lau graduated from Renaissance School of Medicine at Stony Brook University in 1989. Dr. Lau holds California license G77103.
- NPI
- 1770506537NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406917186
- NPI enumeration date
- July 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (530) 668-2632
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Diana W. Lau practices at Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California
Dr. Lau's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic, at 632 W. Gibson Rd, Woodland, CA 95695. The practice phone is (530) 668-2632.
- Primary & Specialty Care - Dignity Health Woodland Clinic632 W. Gibson Rd, Woodland, CA 95695Phone(530) 668-2632
Source: Dmand AI Affiliation Data
Dr. Diana W. Lau is affiliated with 7 sites of care and 1 medical group
Dr. Lau's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California. Dr. Lau is also affiliated with Dignity Health - Woodland Memorial Hospital. The medical group on file is Mercy Medical Group. Dmand AI also links Dr. Lau to 4 more hospitals and 1 group practice or clinic, each named with a free account. Dr. Lau's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Diana W. Lau's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lau practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Primary & Specialty Care - Dignity Health Woodland Clinic | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Diana W. Lau is one of 821 rheumatologists in California
Rheumatology is Dr. Lau's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Lau is board certified in rheumatology by the American Board of Internal Medicine. Dr. Lau is licensed in California.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
Clinical focus
Dmand AI lists arteritis, arthritis, fibromyalgia and chronic pain, fluid in a joint, gout, joint arthropathy, joint pain and lupus among the conditions Dr. Lau treats.
Rheumatologists near Dr. Lau
Counts of rheumatologists 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. Diana W. Lau billed Medicare for 5,084 services in 2024
CMS data shows 5,084 Medicare services from Dr. Lau across 7 procedure codes in 2024, for 432 Medicare patients. Medicare paid $186,780 for them. Every service was in an office.
Dr. Lau's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 1,6202024: 3,900141%
- Office and hospital visits
- 2023: 1,1312024: 1,0834%
- Tests and treatments
- 2023: 312024: 84171%
- Other services
- 2023: 02024: 17
Dr. Lau compared with the California median for rheumatologists, 2024
- Dr. Lau
- California median
- Medicare services
- 5,084vs 9005.6 times
- Medicare patients
- 432vs 2162.0 times
- Part D claims
- 3,798vs 9623.9 times
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Lau'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. Lau and other rheumatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Diana W. Lau treated 432 Medicare patients in 2024, average age 72
CMS counts 432 Medicare patients who saw Dr. Lau in 2024. The largest group is 65 to 74, with 188 patients. 75% of them have arthritis, and 75% have high blood pressure. 31% are also on Medicaid. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lau's median patient age at 68, with 82% women.
Dr. Lau's Medicare patients by age, 2024
Dr. Lau's Medicare patients by sex, 2024
- Women36083%
- Men7217%
Chronic conditions among Dr. Lau's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol69%
- Diabetes30%
- Osteoporosis26%
- Mood disorders25%
- Anxiety24%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lau's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women82%
- Men18%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Diana W. Lau wrote 4,012 Medicare Part D claims in 2024
In 2024, Dr. Lau wrote 4,012 Medicare Part D claims for 478 patients. 76% of them were for generic drugs. CMS names the drug for 3,798 of them, across 48 drugs with 11 or more claims each, at $5,349,265 in total drug cost. In 2023, CMS named 4,079 claims across 53 drugs.
Dr. Lau's Part D claims by kind of drug, 2024
- Generic3,030 claims76%
- Brand-name943 claims24%
- Other39 claims1%
Dr. Lau'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. Lau's Part D claims, 2024
- Opioids6%259 of 4,012 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: 4,0792024: 3,7987%
Drugs named by CMS: 48 in 2024, 53 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
Dr. Diana W. Lau scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Lau for performance year 2024, reported through an alternative payment model (APM). Dr. Lau accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lau as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Lau's MIPS scores, performance year 2024
- 100of 100Final score
- 86.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Diana W. Lau received $10,942 in industry payments from 2016 to 2025
CMS Open Payments shows 190 general payments to Dr. Lau from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Amgen Inc. paid the most, $2,673.
General payments to Dr. Lau by program year, 2016 to 2025
General payments to Dr. Lau by kind, 2016 to 2025
- Food and beverage$10,81799%
- Education$1251%
Companies that paid Dr. Lau the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Diana W. Lau has 1 award and honors on record
Dmand AI lists 1 award for Dr. Lau.
Awards and honors for Dr. Lau
- Undated
- ACR Fellow
Source: Dmand AI Professional Profile Data
Dr. Diana W. Lau graduated from Renaissance School of Medicine at Stony Brook University
Dr. Lau graduated from Renaissance School of Medicine at Stony Brook University in 1989. Dr. Lau is a member of ACR.
- Medical school
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Diana W. Lau accepts plans from 14 insurance carriers
Dr. Lau is in network with 14 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Lau accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- EPO4
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Diana W. Lau'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Diana W. Lau
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. Diana W. Lau's NPI number?
Dr. Diana W. Lau's NPI number is 1770506537. It was assigned on July 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Diana W. Lau?
Dr. Diana W. Lau is a rheumatologist in Woodland, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Diana W. Lau practice?
Dr. Lau practices at 632 W. Gibson Rd, Woodland, CA 95695. Dr. Lau's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California. Dmand AI also links Dr. Lau to 4 hospitals and 1 group practice or clinic.
What is Dr. Diana W. Lau's office phone number?
The practice phone on file for Dr. Lau is (530) 668-2632.
What is Dr. Diana W. Lau's medical license number?
Dr. Lau holds California license G77103.
Which hospitals is Dr. Diana W. Lau affiliated with?
Dr. Lau is affiliated with Dignity Health - Woodland Memorial Hospital. Dmand AI links Dr. Lau to 4 more hospitals.
What medical group is Dr. Diana W. Lau part of?
Dr. Lau is linked to Mercy Medical Group.
Does Dr. Diana W. Lau accept Medicare?
Yes. CMS data shows Dr. Lau billed Medicare for 5,084 services in 2024, and Dr. Lau accepts Medicare assignment.
Does Dr. Diana W. Lau offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lau as offering telehealth services.
What is Dr. Diana W. Lau's MIPS score?
Dr. Lau's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Diana W. Lau see?
CMS counts 432 Medicare patients who saw Dr. Lau in 2024, with an average age of 72.
Is Dr. Diana W. Lau board certified?
Yes. Dr. Lau is board certified in rheumatology by the American Board of Internal Medicine.
What services does Dr. Diana W. Lau bill to Medicare?
In 2024, Dr. Lau's most billed Medicare services were injected or infused drug (J0897), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Diana W. Lau go to medical school?
Dr. Lau graduated from Renaissance School of Medicine at Stony Brook University in 1989.
What drugs does Dr. Diana W. Lau prescribe most?
In 2024 Medicare Part D data, Dr. Lau's most prescribed drugs by claims were Prednisone, Hydroxychloroquine Sulfate and Methotrexate.
Has Dr. Diana W. Lau received payments from drug or device companies?
CMS Open Payments shows $10,942 in general payments to Dr. Lau from 20 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Diana W. Lau been practicing?
Dr. Lau graduated from medical school in 1989, 37 years ago.
What insurance does Dr. Diana W. Lau accept?
Dr. Lau is in network with 14 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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