Dr. Leonard Mark Okun, MD
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 5
- State licenses
- 15
- Year NPI issued
- 2006
- Practice address
- 201 Arch St, Redwood City, CA 94062-1305
- Practice phone
- Call (650) 556-9420
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Workforce Medical Center
Primary care practice · Redwood City, California
Find Dr. Okun'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. Leonard Mark Okun is an internist in San Diego, California
Dr. Okun practices at Workforce Medical Center in Redwood City, California.
Dr. Okun's NPI, 1205941010, was assigned on August 20, 2006. Dr. Okun graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1968. Dr. Okun's California license number on file is G21981.
- NPI
- 1205941010NPI Registry (opens in a new tab)
- NPI enumeration date
- August 20, 2006
- NPI status
- Active
- Practice phone
- (650) 556-9420
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1968
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Leonard Mark Okun practices in Redwood City and San Diego
Dr. Okun's primary practice is Workforce Medical Center, at 201 Arch St, Redwood City, CA 94062-1305. The practice phone is (650) 556-9420. The NPI Registry lists Dr. Okun's practice address as 5575 Rufflin Road, San Diego, CA 92123.
- Workforce Medical CenterPrimary201 Arch St, Redwood City, CA 94062-1305Phone(650) 556-9420
- NPI Registry address5575 Rufflin Road, San Diego, CA 92123Phone(858) 565-1300
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Leonard Mark Okun is affiliated with 1 site of care and 1 medical group
Dr. Okun's primary practice is Workforce Medical Center in Redwood City, California. Dmand AI also links Dr. Okun to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Leonard Mark Okun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Okun practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Workforce Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leonard Mark Okun is one of 16,751 internists in California
Internal medicine is Dr. Okun's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Okun is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Okun's licenses on file in 15 states: California, Florida, North Dakota, Hawaii, Michigan, Colorado, Illinois, Indiana, New Jersey, Wisconsin, Alaska, Georgia, Iowa, Kansas and Kentucky.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Florida license
- North Dakota license
- Hawaii license
- Michigan license
- Colorado license
- Illinois license
- Indiana license
- New Jersey license
- Wisconsin license
- Alaska license
- Georgia license
- Iowa license
- Kansas license
- Kentucky license
Internists near Dr. Okun
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. Leonard Mark Okun graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science
Dr. Okun graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1968.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Leonard Mark Okun accepts plans from 5 insurance carriers
Dr. Okun is in network with 5 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
Plan types Dr. Okun accepts, by number of carriers
- Medicare5
- PPO5
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Leonard Mark Okun'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (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. Leonard Mark Okun
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. Leonard Mark Okun's NPI number?
Dr. Leonard Mark Okun's NPI number is 1205941010. It was assigned on August 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Leonard Mark Okun?
Dr. Leonard Mark Okun is an internist in San Diego, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Leonard Mark Okun practice?
Dr. Okun practices at 201 Arch St, Redwood City, CA 94062-1305. Dr. Okun also practices at 5575 Rufflin Road, San Diego, CA 92123. Dr. Okun's primary practice is Workforce Medical Center in Redwood City, California. Dmand AI also links Dr. Okun to 1 medical group.
What is Dr. Leonard Mark Okun's office phone number?
The practice phone on file for Dr. Okun is (650) 556-9420.
What is Dr. Leonard Mark Okun's medical license number?
Dr. Okun's California license number on file is G21981, one of the licenses on file in 15 states.
Which states has Dr. Leonard Mark Okun been licensed in?
Dmand AI has state licenses on file for Dr. Okun in California (1972 to 2024), Florida (since 1973), North Dakota (since 2015), Hawaii (1996 to 2018), Michigan (2011 to 2018), Colorado (2010 to 2017), Illinois (1969 to 2017), Indiana (2011 to 2017), New Jersey (2009 to 2017), Wisconsin (2012 to 2017), Alaska (2013 to 2016), Georgia (2011 to 2016), Iowa (2013 to 2016), Kansas (2013 to 2016) and Kentucky (2015 to 2016).
Is Dr. Leonard Mark Okun board certified?
Yes. Dr. Okun is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Leonard Mark Okun go to medical school?
Dr. Okun graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1968.
How long has Dr. Leonard Mark Okun been practicing?
Dr. Okun graduated from medical school in 1968, 58 years ago.
What insurance does Dr. Leonard Mark Okun accept?
Dr. Okun is in network with 5 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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