Dr. Lennard Joel Kessler, MD
- Medicare services, 2024
- 140
- Medicare patients, 2024
- 65
- Part D claims, 2024
- 593
- Hospital affiliations
- 1
- Industry payments
- $2,479
- Practice address
- 2121 Wilshire Boulevard, Suite #201, Santa Monica, CA 90403
- Practice phone
- Call (310) 576-7267
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cedars-Sinai Surgery - Santa Monica
Surgery Center - Medicare-Certified · Santa Monica, California
Find Dr. Kessler'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. Lennard Joel Kessler is an OB-GYN in Santa Monica, California
Dr. Kessler practices at Cedars-Sinai Surgery - Santa Monica in Santa Monica, California.
Dr. Kessler's NPI, 1194733014, was assigned on August 4, 2006. Dr. Kessler graduated from University of the Witwatersrand in 1973. Dr. Kessler holds California license A35133.
- NPI
- 1194733014NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921182817
- NPI enumeration date
- August 4, 2006
- NPI status
- Active
- Practice phone
- (310) 576-7267
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Lennard Joel Kessler practices at Cedars-Sinai Surgery - Santa Monica in Santa Monica, California
Dr. Kessler's primary practice is Cedars-Sinai Surgery - Santa Monica, at 2121 Wilshire Boulevard, Suite #201, Santa Monica, CA 90403. The practice phone is (310) 576-7267.
- Cedars-Sinai Surgery - Santa Monica2121 Wilshire Boulevard, Suite #201, Santa Monica, CA 90403Phone(310) 576-7267
Source: Dmand AI Affiliation Data
Dr. Lennard Joel Kessler is affiliated with 4 sites of care and 1 medical group
Dr. Kessler's primary practice is Cedars-Sinai Surgery - Santa Monica in Santa Monica, California. Dr. Kessler is also affiliated with Providence Saint John's Health Center. Dmand AI also links Dr. Kessler to 1 more physician office, 1 group practice or clinic and 1 medical group, each named with a free account. Dr. Kessler's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Lennard Joel Kessler's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kessler practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cedars-Sinai Surgery - Santa Monica | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lennard Joel Kessler is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Kessler's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Kessler is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Kessler's licenses on file in 2 states: California and Colorado.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- Colorado license
Clinical focus
Dmand AI lists menopause and pelvic prolapse among the conditions Dr. Kessler treats.
OB-GYNs near Dr. Kessler
Counts of OB-GYNs 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. Lennard Joel Kessler billed Medicare for 140 services in 2024
CMS data shows 140 Medicare services from Dr. Kessler across 5 procedure codes in 2024, for 65 Medicare patients. Medicare paid $9,685 for them. Every service was in an office.
Dr. Kessler's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1332024: 7345%
- Other services
- 2023: 612024: 4920%
- Imaging
- 2023: 162024: 1813%
Dr. Kessler compared with the California median for OB-GYNs, 2024
- Dr. Kessler
- California median
- Medicare services
- 140vs 582.4 times
- Medicare patients
- 65vs 5225% above
- Part D claims
- 487vs 3513.9 times
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Kessler'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.
Need commercial claims for Dr. Kessler?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kessler and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lennard Joel Kessler treated 65 Medicare patients in 2024, average age 74
CMS counts 65 Medicare patients who saw Dr. Kessler in 2024. The largest group is 65 to 74, with 38 patients. 75% of them have high cholesterol, and 55% have arthritis. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kessler's median patient age at 63, with 100% women.
Dr. Kessler's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Kessler's Medicare patients, 2024
- High cholesterol75%
- Arthritis55%
- High blood pressure51%
- Osteoporosis32%
- Anxiety20%
- Cancer20%
- Ischemic heart disease18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kessler's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women100%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lennard Joel Kessler wrote 593 Medicare Part D claims in 2024
In 2024, Dr. Kessler wrote 593 Medicare Part D claims for 75 patients. 83% of them were for generic drugs. CMS names the drug for 487 of them, across 13 drugs with 11 or more claims each, at $41,475 in total drug cost. In 2023, CMS named 466 claims across 14 drugs.
Dr. Kessler's Part D claims by kind of drug, 2024
- Generic490 claims83%
- Brand-name103 claims17%
Dr. Kessler'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. Kessler's Part D claims, 2024
- Antipsychotics, patients 65 and over2%13 of 593 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: 4662024: 4875%
Drugs named by CMS: 13 in 2024, 14 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
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Dr. Lennard Joel Kessler received $2,479 in industry payments from 2016 to 2025
CMS Open Payments shows 125 general payments to Dr. Kessler from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Abbvie Inc. paid the most, $416.
General payments to Dr. Kessler by program year, 2016 to 2025
General payments to Dr. Kessler by kind, 2016 to 2025
- Food and beverage$2,35495%
- Education$1265%
Companies that paid Dr. Kessler 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. Lennard Joel Kessler has 1 award and honors on record
Dmand AI lists 1 award for Dr. Kessler.
Awards and honors for Dr. Kessler
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Lennard Joel Kessler graduated from University of the Witwatersrand
Dr. Kessler graduated from University of the Witwatersrand in 1973. Dr. Kessler is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Lennard Joel Kessler accepts plans from 1 insurance carrier
Dr. Kessler 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. Lennard Joel Kessler'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) |
| 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. Lennard Joel Kessler
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. Lennard Joel Kessler's NPI number?
Dr. Lennard Joel Kessler's NPI number is 1194733014. It was assigned on August 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lennard Joel Kessler?
Dr. Lennard Joel Kessler is an OB-GYN in Santa Monica, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Lennard Joel Kessler practice?
Dr. Kessler practices at 2121 Wilshire Boulevard, Suite #201, Santa Monica, CA 90403. Dr. Kessler's primary practice is Cedars-Sinai Surgery - Santa Monica in Santa Monica, California. Dmand AI also links Dr. Kessler to 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. Lennard Joel Kessler's office phone number?
The practice phone on file for Dr. Kessler is (310) 576-7267.
What is Dr. Lennard Joel Kessler's medical license number?
Dr. Kessler holds California license A35133, one of the licenses on file in 2 states.
Which states has Dr. Lennard Joel Kessler been licensed in?
Dmand AI has state licenses on file for Dr. Kessler in California (1980 to 2027) and Colorado (1978 to 1983).
Which hospitals is Dr. Lennard Joel Kessler affiliated with?
Dr. Kessler is affiliated with Providence Saint John's Health Center.
Does Dr. Lennard Joel Kessler accept Medicare?
Yes. CMS data shows Dr. Kessler billed Medicare for 140 services in 2024.
How many Medicare patients does Dr. Lennard Joel Kessler see?
CMS counts 65 Medicare patients who saw Dr. Kessler in 2024, with an average age of 74.
Is Dr. Lennard Joel Kessler board certified?
Yes. Dr. Kessler is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
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What services does Dr. Lennard Joel Kessler bill to Medicare?
In 2024, Dr. Kessler's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0101).
Where did Dr. Lennard Joel Kessler go to medical school?
Dr. Kessler graduated from University of the Witwatersrand in 1973.
What drugs does Dr. Lennard Joel Kessler prescribe most?
In 2024 Medicare Part D data, Dr. Kessler's most prescribed drugs by claims were Estradiol, Progesterone and Estradiol (Twice Weekly).
Has Dr. Lennard Joel Kessler received payments from drug or device companies?
CMS Open Payments shows $2,479 in general payments to Dr. Kessler from 29 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Lennard Joel Kessler been practicing?
Dr. Kessler graduated from medical school in 1973, 53 years ago.
What insurance does Dr. Lennard Joel Kessler accept?
Dr. Kessler 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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