Jennifer R. Marks

  • Los Angeles, CA
  • Internist
NPI1033288667PAC ID0749173433
Medicare services, 2024
102
Medicare patients, 2024
52
Part D claims, 2024
925
Hospital affiliations
2
Industry payments
$614
Practice address
1500 San Pablo Street, Los Angeles, CA 90033
Practice phone
Call (323) 442-8656
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Keck Hospital of USC

Hospital · Los Angeles, California

See all 6 affiliations

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Jennifer R. Marks is an internist in Los Angeles, California

Jennifer Marks practices at Keck Hospital of USC in Los Angeles, California, part of University of Southern California.

Jennifer Marks' NPI, 1033288667, was assigned on November 7, 2006. Jennifer Marks graduated from University of Maryland School of Medicine - Baltimore in 1999. Jennifer Marks holds California license C131415.

NPI and contact details
Medicare PAC ID
0749173433
NPI enumeration date
November 7, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(323) 442-8656
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
53
Medical school graduation
1999

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

Jennifer R. Marks practices at Keck Hospital of USC in Los Angeles, California

Jennifer Marks' primary practice is Keck Hospital of USC, at 1500 San Pablo Street, Los Angeles, CA 90033 in Los Angeles County. The practice phone is (323) 442-8656.

  • Keck Hospital of USC
    1500 San Pablo Street, Los Angeles, CA 90033 · Los Angeles CountyPhone(323) 442-8656

Source: Dmand AI Affiliation Data

Jennifer R. Marks is affiliated with 5 sites of care and 1 medical group

Jennifer Marks' primary practice is Keck Hospital of USC in Los Angeles, California, part of University of Southern California. Jennifer Marks is also affiliated with Los Angeles General Medical Center. The medical group on file is USC Care Medical Group. Dmand AI also links Jennifer Marks to 1 more group practice or clinic, 1 other site and 1 urgent care center, each named with a free account.

See all 6 affiliations for Jennifer Marks

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Jennifer R. Marks' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Jennifer Marks practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Keck Hospital of USCAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Jennifer R. Marks is one of 16,751 internists in California

Internal medicine is Jennifer Marks' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Jennifer Marks is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Jennifer Marks' licenses on file in 2 states: California and Virginia.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense C131415 · 2014 to 2026 · taxonomy 207R00000X
  • Virginia license1999 to 2016

Clinical focus

Dmand AI lists acid reflux, alzheimer's disease, atrial fibrillation and flutter, cardiac arrhythmia, chronic diabetes, chronic hypertension, chronic obstructive pulmonary disease (COPD) and cold sores or genital herpes among the conditions Jennifer Marks treats.

Internists near Jennifer Marks

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

Jennifer R. Marks billed Medicare for 102 services in 2024

CMS data shows 102 Medicare services from Jennifer Marks across 3 procedure codes in 2024, all of them office visits, for 52 Medicare patients. Medicare paid $7,243 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024102
Medicare patients52
Paid by Medicare$7,243
Procedure codes3

Jennifer Marks' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 742024: 10238%

Jennifer Marks compared with the California median for internists, 2024

  • Jennifer Marks
  • California median
Medicare services
102vs 36172% below
Medicare patients
52vs 15166% below
Part D claims
550vs 42131% above

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Jennifer Marks' 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 Jennifer Marks

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

Jennifer R. Marks treated 52 Medicare patients in 2024, average age 72

CMS counts 52 Medicare patients who saw Jennifer Marks in 2024. The largest group is 65 to 74, with 20 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Jennifer Marks' median patient age at 58, with 64% women.

Medicare patients, 202452
Average age72
Average risk score1.53
Also on Medicaid29%

Jennifer Marks' Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Jennifer Marks' Medicare patients by sex, 2024

  • Women3771%
  • Men1529%

Chronic conditions among Jennifer Marks' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis56%
  4. Osteoporosis27%
  5. Depression25%
  6. Diabetes25%
  7. Mood disorders25%
  8. Anxiety21%

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

Jennifer Marks' patients across all payers

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

Patient panel by age, all payers

Median age 58

Patient panel by sex, all payers

  • Women64%
  • Men36%

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

Jennifer R. Marks wrote 925 Medicare Part D claims in 2024

In 2024, Jennifer Marks wrote 925 Medicare Part D claims for 173 patients. 87% of them were for generic drugs. CMS names the drug for 550 of them, across 23 drugs with 11 or more claims each, at $14,399 in total drug cost. In 2023, CMS named 344 claims across 18 drugs.

Part D claims, 2024925
Drugs named by CMS23
Total drug cost$14,399
Part D patients173

Jennifer Marks' Part D claims by kind of drug, 2024

  • Generic802 claims87%
  • Brand-name and other123 claims13%

Jennifer Marks' 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 Jennifer Marks' Part D claims, 2024

  • Opioids5%43 of 925 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: 3442024: 55060%

Drugs named by CMS: 23 in 2024, 18 in 2023.

See all prescribing by Jennifer Marks

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

Jennifer R. Marks offers telehealth to Medicare patients

Jennifer Marks accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Jennifer Marks as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Jennifer R. Marks received $614 in industry payments from 2017 to 2024

CMS Open Payments shows 5 general payments to Jennifer Marks from 3 drug and device companies from 2017 to 2024. Travel and lodging make up the largest share, 57% of the total. Intuitive Surgical, Inc. paid the most, $474.

General payments to Jennifer Marks by program year, 2017 to 2024

General payments to Jennifer Marks by kind, 2017 to 2024

$614in total
  • Travel and lodging$35057%
  • Food and beverage$26443%

Companies that paid Jennifer Marks the most, 2017 to 2024

Share is of all general payments to this clinician.

See all payments to Jennifer Marks

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

Jennifer R. Marks graduated from University of Maryland School of Medicine - Baltimore

Jennifer Marks graduated from University of Maryland School of Medicine - Baltimore in 1999. Jennifer Marks is a member of AAIM, ACP and Society of General Internal Medicine.

  1. Medical schoolUniversity of Maryland School of Medicine - Baltimore
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Jennifer R. Marks accepts plans from 7 insurance carriers

Jennifer Marks is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • CMS Medicare

Plan types Jennifer Marks accepts, by number of carriers

  1. Medicare7
  2. PPO6
  3. HMO3
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Jennifer R. Marks'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy 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)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
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 Jennifer R. Marks

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Jennifer R. Marks' NPI number?

Jennifer R. Marks' NPI number is 1033288667. It was assigned on November 7, 2006, and it is active in the NPI Registry.

What does Jennifer R. Marks specialize in?

Jennifer R. Marks is an internist in Los Angeles, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Jennifer R. Marks practice?

Jennifer Marks practices at 1500 San Pablo Street, Los Angeles, CA 90033. Jennifer Marks' primary practice is Keck Hospital of USC in Los Angeles, California, part of University of Southern California. Dmand AI also links Jennifer Marks to 1 group practice or clinic, 1 other site and 1 urgent care center.

What is Jennifer R. Marks' office phone number?

The practice phone on file for Jennifer Marks is (323) 442-8656.

What is Jennifer R. Marks' medical license number?

Jennifer Marks holds California license C131415, one of the licenses on file in 2 states.

Which states has Jennifer R. Marks been licensed in?

Dmand AI has state licenses on file for Jennifer Marks in California (2014 to 2026) and Virginia (1999 to 2016).

Which hospitals is Jennifer R. Marks affiliated with?

Jennifer Marks practices at Keck Hospital of USC in Los Angeles, California. Jennifer Marks is also affiliated with Los Angeles General Medical Center.

What medical group is Jennifer R. Marks part of?

Jennifer Marks is linked to USC Care Medical Group.

Does Jennifer R. Marks accept Medicare?

Yes. CMS data shows Jennifer Marks billed Medicare for 102 services in 2024, and Jennifer Marks accepts Medicare assignment.

Does Jennifer R. Marks offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Jennifer Marks as offering telehealth services.

Show 8 more questionsShow fewer questions

How many Medicare patients does Jennifer R. Marks see?

CMS counts 52 Medicare patients who saw Jennifer Marks in 2024, with an average age of 72.

Is Jennifer R. Marks board certified?

Yes. Jennifer Marks is board certified in internal medicine by the American Board of Internal Medicine.

What services does Jennifer R. Marks bill to Medicare?

In 2024, Jennifer Marks' most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, established patient (99215).

Where did Jennifer R. Marks go to medical school?

Jennifer Marks graduated from University of Maryland School of Medicine - Baltimore in 1999.

What drugs does Jennifer R. Marks prescribe most?

In 2024 Medicare Part D data, Jennifer Marks' most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.

Has Jennifer R. Marks received payments from drug or device companies?

CMS Open Payments shows $614 in general payments to Jennifer Marks from 3 companies from 2017 to 2024. The largest total came from Intuitive Surgical, Inc.

How long has Jennifer R. Marks been practicing?

Jennifer Marks graduated from medical school in 1999, 27 years ago.

What insurance does Jennifer R. Marks accept?

Jennifer Marks is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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