Dr. John B. Lees, DO
- Medicare services, 2019
- 161
- Part D claims, 2019
- 2,615
- Hospital affiliations
- 1
- Industry payments
- $126
- Medical group
- 1
- 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. Lees' 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. Lees is a family medicine physician in Mission Viejo, California
Dr. Lees practices at Mission Hospital - Unit in Mission Viejo, California.
Dr. Lees' NPI, 1639239908, was assigned on December 9, 2006. Dr. Lees holds Arizona license 1942.
- NPI
- 1639239908NPI Registry (opens in a new tab)
- NPI enumeration date
- December 9, 2006
- NPI status
- Active
- Practice phone
- (949) 365-2447
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John B. Lees practices at Mission Hospital - Unit in Mission Viejo, California
Dr. Lees' 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. Lees is affiliated with 2 sites of care and 1 medical group
Dr. Lees' primary practice is Mission Hospital - Unit in Mission Viejo, California. The medical group on file is HonorHealth Medical Group. Dmand AI also links Dr. Lees to 1 more group practice or clinic, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John B. Lees' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lees practices, 2 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 |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John B. Lees is one of 15,680 family medicine physicians in California
Family medicine is Dr. Lees' primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Lees is licensed in Arizona.
Specialties and state licenses
- Family medicine, ArizonaPrimary
Family medicine physicians near Dr. Lees
Counts of family 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. Lees billed Medicare for 161 services in 2019
CMS data shows 161 Medicare services from Dr. Lees across 4 procedure codes in 2019. Medicare paid $4,816 for them. Every service was in an office.
Dr. Lees' Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 3182019: 7776%
- Surgery
- 2018: 2832019: 6677%
- Other services
- 2018: 2752019: 1893%
- Drugs given in the office
- 2018: 1452019: 0100%
- Lab and pathology
- 2018: 132019: 0100%
- Tests and treatments
- 2018: 1732019: 0100%
Dr. Lees compared with the California median for family medicine physicians, 2019
- Dr. Lees
- California median
- Medicare services
- 161vs 24635% below
- Part D claims
- 2,615vs 8333.1 times
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Lees' most billed Medicare procedure codes, 2019
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. Lees and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John B. Lees' patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Lees' median patient age at 73, with 30% women.
Dr. Lees' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women30%
- Men68%
Source: Dmand AI Patient Panel Data
Dr. John B. Lees wrote 2,615 Medicare Part D claims in 2019
In 2019, Dr. Lees wrote 2,615 Medicare Part D claims. They cover 69 drugs, with $69,222 in total drug cost. In 2018, CMS named 4,620 claims across 103 drugs.
Dr. Lees' most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 4,6202019: 2,61543%
Drugs named by CMS: 69 in 2019, 103 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. John B. Lees received $126 in industry payments from 2016 to 2020
CMS Open Payments shows 16 general payments to Dr. Lees from 3 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Sunovion Pharmaceuticals Inc. paid the most, $59.
General payments to Dr. Lees by program year, 2016 to 2020
Companies that paid Dr. Lees the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John B. Lees'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Lees
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. Lees' NPI number?
Dr. John B. Lees' NPI number is 1639239908. It was assigned on December 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John B. Lees?
Dr. John B. Lees is a family medicine physician in Mission Viejo, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. John B. Lees practice?
Dr. Lees practices at 27700 Medical Center Rd, Mission Viejo, CA 92691. Dr. Lees' primary practice is Mission Hospital - Unit in Mission Viejo, California. Dmand AI also links Dr. Lees to 1 group practice or clinic.
What is Dr. John B. Lees' office phone number?
The practice phone on file for Dr. Lees is (949) 365-2447.
What is Dr. John B. Lees' medical license number?
Dr. Lees holds Arizona license 1942.
What medical group is Dr. John B. Lees part of?
Dr. Lees is linked to HonorHealth Medical Group.
Does Dr. John B. Lees accept Medicare?
Yes. CMS data shows Dr. Lees billed Medicare for 161 services in 2019.
What services does Dr. John B. Lees bill to Medicare?
In 2019, Dr. Lees' most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99214) and office visit, established patient (99213).
What drugs does Dr. John B. Lees prescribe most?
In 2019 Medicare Part D data, Dr. Lees' most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. John B. Lees received payments from drug or device companies?
CMS Open Payments shows $126 in general payments to Dr. Lees from 3 companies from 2016 to 2020. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. John B. Lees been practicing?
Dr. Lees' NPI was assigned in 2006.
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