Dr. Gary Stewart Lee, MD
- Medicare services, 2023
- 32
- Medicare patients, 2024
- 17
- Part D claims, 2022
- 128
- MIPS score, 2024
- 61
- Hospital affiliations
- 1
- Practice address
- 377 E Chapman Ave, Placentia, CA 92870
- Practice phone
- Call (415) 563-0565
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Francisco Healthcare & Wellness Center
Placentia, California
Find Dr. Lee'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. Gary Stewart Lee is a geriatric medicine (internal medicine) physician in Placentia, California
Dr. Lee practices at San Francisco Healthcare & Wellness Center in Placentia, California.
Dr. Lee's NPI, 1710943113, was assigned on April 25, 2006. Dr. Lee graduated from UC San Diego School of Medicine in 1986. Dr. Lee's California license number on file is G61379.
- NPI
- 1710943113NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729142260
- NPI enumeration date
- April 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 563-0565
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gary Stewart Lee practices at San Francisco Healthcare & Wellness Center in Placentia, California
Dr. Lee's primary practice is San Francisco Healthcare & Wellness Center, at 377 E Chapman Ave, Placentia, CA 92870 in Orange County. The practice phone is (415) 563-0565.
- San Francisco Healthcare & Wellness Center377 E Chapman Ave, Placentia, CA 92870 · Orange CountyPhone(415) 563-0565
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gary Stewart Lee is affiliated with 2 sites of care and 2 medical groups
Dr. Lee's primary practice is San Francisco Healthcare & Wellness Center in Placentia, California. Dr. Lee is also affiliated with Santa Clara Valley Medical Center. The medical group on file is County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI also links Dr. Lee to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gary Stewart Lee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lee practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Francisco Healthcare & Wellness Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gary Stewart Lee is one of 497 geriatric medicine (internal medicine) physicians in California
Geriatric medicine is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207RG0300X. Dr. Lee is board certified in geriatric medicine by the American Board of Internal Medicine. Dr. Lee has a license on file in California.
Specialties and state licenses
- Geriatric medicine (internal medicine), CaliforniaPrimary
Geriatric medicine (internal medicine) physicians near Dr. Lee
Counts of geriatric medicine (internal medicine) physicians 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. Gary Stewart Lee billed Medicare for 32 services in 2023
CMS data shows 32 Medicare services from Dr. Lee across 2 procedure codes in 2023, for 17 Medicare patients. Medicare paid $3,037 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lee compared with the California median for geriatric medicine (internal medicine) physicians, 2023
- Dr. Lee
- California median
- Medicare services
- 32vs 42492% below
- Medicare patients
- 17vs 17890% below
- Part D claims
- 128vs 93086% below
Medians across 466 geriatric medicine (internal medicine) physicians in California with Dmand AI profiles that report each measure.
Dr. Lee's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Lee?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lee and other geriatric medicine (internal medicine) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary Stewart Lee treated 17 Medicare patients in 2024, average age 75
CMS counts 17 Medicare patients who saw Dr. Lee in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 3.70, 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. Lee's median patient age at 77, with 55% women.
Chronic conditions among Dr. Lee's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lee's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gary Stewart Lee wrote 128 Medicare Part D claims in 2022
In 2022, Dr. Lee wrote 128 Medicare Part D claims. They cover 9 drugs, with $6,665 in total drug cost. In 2019, CMS named 64 claims across 5 drugs.
Dr. Lee's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2022
- 2019
- 2022
- Claims for drugs CMS names
- 2019: 642022: 128100%
Drugs named by CMS: 9 in 2022, 5 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Gary Stewart Lee scored 61 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 61 out of 100 for Dr. Lee for performance year 2024, reported as part of a group. Dr. Lee accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Lee's MIPS scores, performance year 2024
- 61of 100Final score
- 59.4of 100Quality
- 0of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 100Cost
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. Gary Stewart Lee received $88 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Lee from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $88.
Companies that paid Dr. Lee the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gary Stewart Lee graduated from UC San Diego School of Medicine
Dr. Lee graduated from UC San Diego School of Medicine in 1986. Dr. Lee is a member of AAHPM.
- Medical school
- Board certified in geriatric medicine
- Board certified in hospice and palliative medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gary Stewart Lee accepts plans from 3 insurance carriers
Dr. Lee is in network with 3 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- CMS Medicare
Plan types Dr. Lee accepts, by number of carriers
- HMO2
- Medicare2
- POS2
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Gary Stewart Lee'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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) |
| 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. Gary Stewart Lee
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. Gary Stewart Lee's NPI number?
Dr. Gary Stewart Lee's NPI number is 1710943113. It was assigned on April 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary Stewart Lee?
Dr. Gary Stewart Lee is a geriatric medicine (internal medicine) physician in Placentia, California. The primary specialty in the NPI Registry is Geriatric Medicine (Internal Medicine) Physician (taxonomy code 207RG0300X).
Where does Dr. Gary Stewart Lee practice?
Dr. Lee practices at 377 E Chapman Ave, Placentia, CA 92870. Dr. Lee's primary practice is San Francisco Healthcare & Wellness Center in Placentia, California. Dmand AI also links Dr. Lee to 1 medical group.
What is Dr. Gary Stewart Lee's office phone number?
The practice phone on file for Dr. Lee is (415) 563-0565.
What is Dr. Gary Stewart Lee's medical license number?
Dr. Lee's California license number on file is G61379.
Which hospitals is Dr. Gary Stewart Lee affiliated with?
Dr. Lee is affiliated with Santa Clara Valley Medical Center.
What medical group is Dr. Gary Stewart Lee part of?
Dr. Lee is linked to County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI links Dr. Lee to 1 more medical group.
Does Dr. Gary Stewart Lee accept Medicare?
Yes. CMS data shows Dr. Lee billed Medicare for 32 services in 2023, and Dr. Lee accepts Medicare assignment.
What is Dr. Gary Stewart Lee's MIPS score?
Dr. Lee's MIPS final score for performance year 2024 is 61 out of 100, reported as part of a group.
How many Medicare patients does Dr. Gary Stewart Lee see?
CMS counts 17 Medicare patients who saw Dr. Lee in 2024, with an average age of 75.
Show 7 more questionsShow fewer questions
Is Dr. Gary Stewart Lee board certified?
Yes. Dr. Lee is board certified in geriatric medicine by the American Board of Internal Medicine.
What services does Dr. Gary Stewart Lee bill to Medicare?
In 2023, Dr. Lee's most billed Medicare services were hospital inpatient care (99221) and hospital inpatient care (99222).
Where did Dr. Gary Stewart Lee go to medical school?
Dr. Lee graduated from UC San Diego School of Medicine in 1986.
What drugs does Dr. Gary Stewart Lee prescribe most?
In 2022 Medicare Part D data, Dr. Lee's most prescribed drugs by claims were Prednisone, Bupropion HCl SR and Incruse Ellipta.
Has Dr. Gary Stewart Lee received payments from drug or device companies?
CMS Open Payments shows $88 in general payments to Dr. Lee from 1 company from 2023 to 2023. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Dr. Gary Stewart Lee been practicing?
Dr. Lee graduated from medical school in 1986, 40 years ago.
What insurance does Dr. Gary Stewart Lee accept?
Dr. Lee is in network with 3 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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