Dr. John B. Lee, MD
- Medicare services, 2024
- 721
- Medicare patients, 2024
- 544
- Part D claims, 2024
- 284
- MIPS score, 2024
- 75
- Hospital affiliations
- 3
- Practice address
- 27700 Medical Center Rd, Mission Viejo, CA 92691
- Practice phone
- Call (949) 365-2447
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mission Hospital - Unit
Acute Care Hospital-Unit · Mission Viejo, 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. John B. Lee is an emergency medicine physician in Mission Viejo, California
Dr. Lee practices at Mission Hospital - Unit in Mission Viejo, California.
Dr. Lee's NPI, 1538178272, was assigned on August 5, 2006. Dr. Lee graduated from Loma Linda University School Of Medicine in 2003. Dr. Lee's Oregon license number on file is MD154752.
- NPI
- 1538178272NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870502305
- NPI enumeration date
- August 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (949) 365-2447
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John B. Lee practices at Mission Hospital - Unit in Mission Viejo, California
Dr. Lee's primary practice is Mission Hospital - Unit, at 27700 Medical Center Rd, Mission Viejo, CA 92691 in Orange County. The practice phone is (949) 365-2447.
- Mission Hospital - Unit27700 Medical Center Rd, Mission Viejo, CA 92691 · Orange CountyPhone(949) 365-2447
Source: Dmand AI Affiliation Data
Dr. John B. Lee is affiliated with 3 sites of care and 2 medical groups
Dr. Lee's primary practice is Mission Hospital - Unit in Mission Viejo, California. Dr. Lee is also affiliated with Providence Mission Hospital. The medical group on file is Emergency Medicine Physicians. Dmand AI also links Dr. Lee to 1 more hospital and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John B. Lee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lee practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mission Hospital - Unit | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John B. Lee is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Lee is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Lee's licenses on file in 2 states: Oregon and California.
Specialties and state licenses
- Emergency medicine, OregonPrimary
- California license
Emergency medicine physicians near Dr. Lee
Counts of emergency 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. John B. Lee billed Medicare for 721 services in 2024
CMS data shows 721 Medicare services from Dr. Lee across 4 procedure codes in 2024, for 544 Medicare patients. Medicare paid $83,454 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lee's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5012024: 55511%
- Tests and treatments
- 2023: 752024: 166121%
Dr. Lee compared with the California median for emergency medicine physicians, 2024
- Dr. Lee
- California median
- Medicare services
- 721vs 2652.7 times
- Medicare patients
- 544vs 2432.2 times
- Part D claims
- 137vs 622.2 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Lee'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. Lee and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John B. Lee treated 544 Medicare patients in 2024, average age 78
CMS counts 544 Medicare patients who saw Dr. Lee in 2024. The largest group is 75 to 84, with 206 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.98, 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 54, with 55% women.
Dr. Lee's Medicare patients by age, 2024
Dr. Lee's Medicare patients by sex, 2024
- Women29254%
- Men25246%
Chronic conditions among Dr. Lee's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease41%
- Atrial fibrillation36%
- Diabetes35%
- Anxiety33%
- Chronic kidney disease33%
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 54
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. John B. Lee wrote 284 Medicare Part D claims in 2024
In 2024, Dr. Lee wrote 284 Medicare Part D claims for 205 patients. 93% of them were for generic drugs. CMS names the drug for 137 of them, across 6 drugs with 11 or more claims each, at $870 in total drug cost. In 2023, CMS named 81 claims across 4 drugs.
Dr. Lee's Part D claims by kind of drug, 2024
- Generic263 claims93%
- Brand-name21 claims7%
Dr. Lee'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. Lee's Part D claims, 2024
- Opioids17%47 of 284 claims
- Antibiotics35%98 of 284 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: 812024: 13769%
Drugs named by CMS: 6 in 2024, 4 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. John B. Lee scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 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
- MIPS final score, 2024
- 75 of 100
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. John B. Lee received $373 in industry payments from 2018 to 2024
CMS Open Payments shows 5 general payments to Dr. Lee from 5 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. Biosense Webster, Inc. paid the most, $124.
General payments to Dr. Lee by program year, 2018 to 2024
Companies that paid Dr. Lee the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John B. Lee graduated from Loma Linda University School Of Medicine
Dr. Lee graduated from Loma Linda University School Of Medicine in 2003.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. John B. Lee accepts plans from 1 insurance carrier
Dr. Lee is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. John B. 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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) |
| 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. John B. 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. John B. Lee's NPI number?
Dr. John B. Lee's NPI number is 1538178272. It was assigned on August 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John B. Lee?
Dr. John B. Lee is an emergency medicine physician in Mission Viejo, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. John B. Lee practice?
Dr. Lee practices at 27700 Medical Center Rd, Mission Viejo, CA 92691. Dr. Lee's primary practice is Mission Hospital - Unit in Mission Viejo, California. Dmand AI also links Dr. Lee to 1 hospital and 1 medical group.
What is Dr. John B. Lee's office phone number?
The practice phone on file for Dr. Lee is (949) 365-2447.
What is Dr. John B. Lee's medical license number?
Dr. Lee's Oregon license number on file is MD154752, one of the licenses on file in 2 states.
Which states has Dr. John B. Lee been licensed in?
Dmand AI has state licenses on file for Dr. Lee in Oregon (2011 to 2019) and California (2004 to 2026).
Which hospitals is Dr. John B. Lee affiliated with?
Dr. Lee is affiliated with Providence Mission Hospital. Dmand AI links Dr. Lee to 2 more hospitals.
What medical group is Dr. John B. Lee part of?
Dr. Lee is linked to Emergency Medicine Physicians. Dmand AI links Dr. Lee to 1 more medical group.
Does Dr. John B. Lee accept Medicare?
Yes. CMS data shows Dr. Lee billed Medicare for 721 services in 2024, and Dr. Lee accepts Medicare assignment.
What is Dr. John B. Lee's MIPS score?
Dr. Lee's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. John B. Lee see?
CMS counts 544 Medicare patients who saw Dr. Lee in 2024, with an average age of 78.
Is Dr. John B. Lee board certified?
Yes. Dr. Lee is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. John B. Lee bill to Medicare?
In 2024, Dr. Lee's most billed Medicare services were emergency department visit (99285), critical care (99291) and heart test or procedure (93010).
Where did Dr. John B. Lee go to medical school?
Dr. Lee graduated from Loma Linda University School Of Medicine in 2003.
What drugs does Dr. John B. Lee prescribe most?
In 2024 Medicare Part D data, Dr. Lee's most prescribed drugs by claims were Cephalexin, Hydrocodone-Acetaminophen and Ondansetron ODT.
Has Dr. John B. Lee received payments from drug or device companies?
CMS Open Payments shows $373 in general payments to Dr. Lee from 5 companies from 2018 to 2024. The largest total came from Biosense Webster, Inc.
How long has Dr. John B. Lee been practicing?
Dr. Lee graduated from medical school in 2003, 23 years ago.
What insurance does Dr. John B. Lee accept?
Dr. Lee is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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