Dr. Leslie F. Memsic, MD

  • Beverly Hills, CA
  • Surgical oncologist
NPI1821019456PAC ID8123287497
Medicare services, 2024
1,422
Medicare patients, 2024
441
Part D claims, 2024
163
Publications
3
MIPS score, 2024
75
Practice address
436 N Bedford Dr, Beverly Hills, CA 90210
Practice phone
Call (310) 385-8819
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Innova Surgery Center, LLC

Beverly Hills, California

See all 9 affiliations

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Dr. Leslie F. Memsic is a surgical oncologist in Beverly Hills, California

Dr. Memsic practices at Innova Surgery Center, LLC in Beverly Hills, California.

Dr. Memsic's NPI, 1821019456, was assigned on July 21, 2006. Dr. Memsic graduated from UC San Diego School of Medicine in 1981. Dr. Memsic holds California license G496380.

NPI and contact details
Medicare PAC ID
8123287497
NPI enumeration date
July 21, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(310) 385-8819
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
71
Medical school graduation
1981

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Leslie F. Memsic practices at Innova Surgery Center, LLC in Beverly Hills, California

Dr. Memsic's primary practice is Innova Surgery Center, LLC, at 436 N Bedford Dr, Beverly Hills, CA 90210 in Los Angeles County. The practice phone is (310) 385-8819.

  • Innova Surgery Center, LLC
    436 N Bedford Dr, Beverly Hills, CA 90210 · Los Angeles CountyPhone(310) 385-8819

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Leslie F. Memsic is affiliated with 7 sites of care and 2 medical groups

Dr. Memsic's primary practice is Innova Surgery Center, LLC in Beverly Hills, California. Dr. Memsic is also affiliated with Cedars-Sinai Medical Center. Dmand AI also links Dr. Memsic to 2 more hospitals, 2 group practices and clinics, 2 medical groups and 1 physician office, each named with a free account.

See all 9 affiliations for Dr. Memsic

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Leslie F. Memsic's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Memsic practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Innova Surgery Center, LLCAvailable with a free account
+6 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Leslie F. Memsic is one of 243 surgical oncologists in California

Surgical oncology is Dr. Memsic's primary specialty in the NPI Registry, under taxonomy code 2086X0206X. Dr. Memsic is board certified in surgery by the American Board of Surgery. Dr. Memsic is licensed in California.

Specialties and state licenses

  • Surgical oncology, CaliforniaPrimaryLicense G496380 · 1983 to 2026 · taxonomy 2086X0206X

Clinical focus

Dmand AI lists abdominal hernia repair surgery, breast reconstruction, colon removal, groin hernia surgery and mastectomy among the conditions Dr. Memsic treats.

Surgical oncologists near Dr. Memsic

Counts of surgical oncologists 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. Leslie F. Memsic billed Medicare for 1,422 services in 2024

CMS data shows 1,422 Medicare services from Dr. Memsic across 14 procedure codes in 2024, for 441 Medicare patients. Medicare paid $159,334 for them.

Medicare services, 20241,422
Medicare patients441
Paid by Medicare$159,334
Procedure codes14

Dr. Memsic's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 6112024: 67010%
Imaging
2023: 4972024: 63628%
Surgery
2023: 682024: 11671%

Where Dr. Memsic's Medicare services took place, 2024

  • In an office1,32493%
  • In a facility987%

Dr. Memsic compared with the California median for surgical oncologists, 2024

  • Dr. Memsic
  • California median
Medicare services
1,422vs 1728.3 times
Medicare patients
441vs 1114.0 times
Part D claims
93vs 224.2 times

Medians across 217 surgical oncologists in California with Dmand AI profiles that report each measure.

Dr. Memsic'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.

See all procedures by Dr. Memsic

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Leslie F. Memsic treated 441 Medicare patients in 2024, average age 73

CMS counts 441 Medicare patients who saw Dr. Memsic in 2024. The largest group is 65 to 74, with 243 patients. 75% of them have high cholesterol, and 58% have high blood pressure. 6% are also on Medicaid. Their average risk score is 0.94, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Memsic's median patient age at 67, with 92% women.

Medicare patients, 2024441
Average age73
Average risk score0.94
Also on Medicaid6%

Dr. Memsic's Medicare patients by age, 2024

Dr. Memsic's Medicare patients by sex, 2024

  • Women40893%
  • Men337%

Chronic conditions among Dr. Memsic's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure58%
  3. Arthritis51%
  4. Cancer47%
  5. Osteoporosis32%
  6. Ischemic heart disease29%
  7. Anxiety23%
  8. Mood disorders21%

Share of Medicare patients with each condition. A patient can have several.

Dr. Memsic's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women92%
  • Men6%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Leslie F. Memsic wrote 163 Medicare Part D claims in 2024

In 2024, Dr. Memsic wrote 163 Medicare Part D claims for 58 patients. 95% of them were for generic drugs. CMS names the drug for 93 of them, across 4 drugs with 11 or more claims each, at $1,622 in total drug cost. In 2023, CMS named 80 claims across 3 drugs.

Part D claims, 2024163
Drugs named by CMS4
Total drug cost$1,622
Part D patients58

Dr. Memsic's Part D claims by kind of drug, 2024

  • Generic155 claims95%
  • Brand-name and other8 claims5%

Dr. Memsic'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. Memsic's Part D claims, 2024

  • Opioids30%49 of 163 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: 802024: 9316%

Drugs named by CMS: 4 in 2024, 3 in 2023.

See all prescribing by Dr. Memsic

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. Leslie F. Memsic 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. Memsic for performance year 2024, reported individually. Dr. Memsic accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Memsic as offering telehealth. CMS counts 49 procedures of mastectomy by Dr. Memsic, more than 94% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes
MIPS final score, 2024
75 of 100

Where Dr. Memsic ranks in Medicare procedure volume

Mastectomy
94th percentile49 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Leslie F. Memsic has 3 publications on record

Dmand AI links 3 papers to Dr. Memsic. Dr. Memsic's most frequent co-authors are Allan W. Silberman, MD, Stewart Howard Gleischman, MD and Solomon I. Hamburg, MD.

Papers3

Dr. Memsic's most frequent co-authors

Recent publications by Dr. Memsic

See all 3 publications and co-authors

See who Dr. Memsic researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Memsic works with, so you can find a warm path to the right surgical oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Leslie F. Memsic received $237 in industry payments from 2018 to 2025

CMS Open Payments shows 7 general payments to Dr. Memsic from 5 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Rti Surgical, Inc paid the most, $92.

General payments to Dr. Memsic by program year, 2018 to 2025

Companies that paid Dr. Memsic the most, 2018 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Memsic

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Leslie F. Memsic has 4 awards and honors on record

Dmand AI lists 4 awards for Dr. Memsic, most recently Top Doctors:LA Area in 2013.

Awards and honors for Dr. Memsic

  1. 2013
    • Top Doctors:LA Area
  2. 2012
    • Top Doctors:Southern California
  3. Undated
    • ACS Fellow
    • Compassionate Doctors

Source: Dmand AI Professional Profile Data

Dr. Leslie F. Memsic graduated from UC San Diego School of Medicine

Dr. Memsic graduated from UC San Diego School of Medicine in 1981. Dr. Memsic is a member of ACS.

  1. Medical schoolUC San Diego School of Medicine
  2. Board certified in surgeryAmerican Board of Surgery

Source: Dmand AI Professional Profile Data

Dr. Leslie F. Memsic accepts plans from 4 insurance carriers

Dr. Memsic is in network with 4 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • CMS Medicare

Plan types Dr. Memsic accepts, by number of carriers

  1. Medicare4
  2. PPO3
  3. EPO1
  4. HMO1
  5. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Leslie F. Memsic's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Leslie F. Memsic

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. Leslie F. Memsic's NPI number?

Dr. Leslie F. Memsic's NPI number is 1821019456. It was assigned on July 21, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Leslie F. Memsic?

Dr. Leslie F. Memsic is a surgical oncologist in Beverly Hills, California. The primary specialty in the NPI Registry is Surgical Oncology Physician (taxonomy code 2086X0206X).

Where does Dr. Leslie F. Memsic practice?

Dr. Memsic practices at 436 N Bedford Dr, Beverly Hills, CA 90210. Dr. Memsic's primary practice is Innova Surgery Center, LLC in Beverly Hills, California. Dmand AI also links Dr. Memsic to 2 hospitals, 2 group practices and clinics, 2 medical groups and 1 physician office.

What is Dr. Leslie F. Memsic's office phone number?

The practice phone on file for Dr. Memsic is (310) 385-8819.

What is Dr. Leslie F. Memsic's medical license number?

Dr. Memsic holds California license G496380.

Which hospitals is Dr. Leslie F. Memsic affiliated with?

Dr. Memsic is affiliated with Cedars-Sinai Medical Center. Dmand AI links Dr. Memsic to 2 more hospitals.

Does Dr. Leslie F. Memsic accept Medicare?

Yes. CMS data shows Dr. Memsic billed Medicare for 1,422 services in 2024, and Dr. Memsic accepts Medicare assignment.

Does Dr. Leslie F. Memsic offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Memsic as offering telehealth services.

What is Dr. Leslie F. Memsic's MIPS score?

Dr. Memsic's MIPS final score for performance year 2024 is 75 out of 100, reported individually.

How many Medicare patients does Dr. Leslie F. Memsic see?

CMS counts 441 Medicare patients who saw Dr. Memsic in 2024, with an average age of 73.

Show 9 more questionsShow fewer questions

Is Dr. Leslie F. Memsic board certified?

Yes. Dr. Memsic is board certified in surgery by the American Board of Surgery.

What services does Dr. Leslie F. Memsic bill to Medicare?

In 2024, Dr. Memsic's most billed Medicare services were ultrasound (76641), office visit, established patient (99213) and office visit, established patient (99214).

Where did Dr. Leslie F. Memsic go to medical school?

Dr. Memsic graduated from UC San Diego School of Medicine in 1981.

What drugs does Dr. Leslie F. Memsic prescribe most?

In 2024 Medicare Part D data, Dr. Memsic's most prescribed drugs by claims were Anastrozole, Hydrocodone-Acetaminophen and Tamoxifen Citrate.

Has Dr. Leslie F. Memsic received payments from drug or device companies?

CMS Open Payments shows $237 in general payments to Dr. Memsic from 5 companies from 2018 to 2025. The largest total came from Rti Surgical, Inc.

How long has Dr. Leslie F. Memsic been practicing?

Dr. Memsic graduated from medical school in 1981, 45 years ago.

Does Dr. Leslie F. Memsic do research?

Dmand AI links 3 publications to Dr. Memsic.

Who does Dr. Leslie F. Memsic publish with?

Dr. Memsic's most frequent co-authors are Allan W. Silberman, MD (3 shared papers), Stewart Howard Gleischman, MD (1 shared paper) and Solomon I. Hamburg, MD (1 shared paper).

What insurance does Dr. Leslie F. Memsic accept?

Dr. Memsic is in network with 4 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

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