Dr. Larry J. Marshall, MD
- Medicare services, 2024
- 571
- Medicare patients, 2024
- 226
- Part D claims, 2024
- 7,640
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 12517 Lakeshore Dr, Lakeside, CA 92040-3103
- Practice phone
- Call (619) 443-3843
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Larry J Marshall MD
Physician office · Lakeside, California
Find Dr. Marshall'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. Larry J. Marshall is a family medicine physician in Lakeside, California
Dr. Marshall practices at Larry J Marshall MD in Lakeside, California.
Dr. Marshall's NPI, 1114018132, was assigned on September 27, 2006. Dr. Marshall graduated from Universidad Autonoma de Nuevo Leon in 1985. Dr. Marshall holds California license A52344.
- NPI
- 1114018132NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860420486
- NPI enumeration date
- September 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (619) 443-3843
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Larry J. Marshall practices at Larry J Marshall MD in Lakeside, California
Dr. Marshall's primary practice is Larry J Marshall MD, at 12517 Lakeshore Dr, Lakeside, CA 92040-3103. The practice phone is (619) 443-3843.
- Larry J Marshall MD12517 Lakeshore Dr, Lakeside, CA 92040-3103Phone(619) 443-3843
Source: Dmand AI Affiliation Data
Dr. Larry J. Marshall is affiliated with 7 sites of care and 1 medical group
Dr. Marshall's primary practice is Larry J Marshall MD in Lakeside, California. Dr. Marshall is also affiliated with Sharp Memorial Hospital. The medical group on file is Emergency and Acute Care Medical Corporation. Dmand AI also links Dr. Marshall to 1 more hospital and 4 home health agencies, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Larry J. Marshall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marshall practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Larry J Marshall MD | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Larry J. Marshall is one of 15,680 family medicine physicians in California
Family medicine is Dr. Marshall's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Marshall is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Marshall's licenses on file in 3 states: California, Nevada and Texas.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
- Nevada license
- Texas license
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute sinusitis, acute skin infection, alcohol use disorders, anemia, ankle or foot injury and anxiety among the conditions Dr. Marshall treats.
Family medicine physicians near Dr. Marshall
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. Larry J. Marshall billed Medicare for 571 services in 2024
CMS data shows 571 Medicare services from Dr. Marshall across 5 procedure codes in 2024, for 226 Medicare patients. Medicare paid $36,416 for them. Every service was in an office.
Dr. Marshall's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7792024: 53032%
- Other services
- 2023: 202024: 2945%
- Lab and pathology
- 2023: 122024: 12No change
- Tests and treatments
- 2023: 162024: 0100%
Dr. Marshall compared with the California median for family medicine physicians, 2024
- Dr. Marshall
- California median
- Medicare services
- 571vs 2462.3 times
- Medicare patients
- 226vs 11892% above
- Part D claims
- 7,035vs 8338.4 times
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Marshall'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marshall 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. Larry J. Marshall treated 226 Medicare patients in 2024, average age 72
CMS counts 226 Medicare patients who saw Dr. Marshall in 2024. The largest group is 65 to 74, with 120 patients. 69% of them have high blood pressure, and 56% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marshall's median patient age at 59, with 42% women.
Dr. Marshall's Medicare patients by age, 2024
Dr. Marshall's Medicare patients by sex, 2024
- Women9542%
- Men13158%
Chronic conditions among Dr. Marshall's Medicare patients, 2024
- High blood pressure69%
- High cholesterol56%
- Arthritis49%
- Diabetes28%
- Anxiety20%
- Ischemic heart disease19%
- Mood disorders18%
- Depression17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marshall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Larry J. Marshall wrote 7,640 Medicare Part D claims in 2024
In 2024, Dr. Marshall wrote 7,640 Medicare Part D claims for 463 patients. 91% of them were for generic drugs. CMS names the drug for 7,035 of them, across 138 drugs with 11 or more claims each, at $344,798 in total drug cost. In 2023, CMS named 7,382 claims across 138 drugs.
Dr. Marshall's Part D claims by kind of drug, 2024
- Generic6,953 claims91%
- Brand-name652 claims9%
- Other35 claims0%
Dr. Marshall'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. Marshall's Part D claims, 2024
- Opioids4%333 of 7,640 claims
- Antibiotics3%260 of 7,640 claims
- Antipsychotics, patients 65 and over1%98 of 7,640 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: 7,3822024: 7,0355%
Drugs named by CMS: 138 in 2024, 138 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
Dr. Larry J. Marshall offers telehealth to Medicare patients
Dr. Marshall accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Marshall as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Larry J. Marshall has 1 publication on record
Dmand AI links 1 paper to Dr. Marshall in 2010. Dr. Marshall's most frequent co-authors are Chiazo S. Amene, MD, Lissa Catherine Baird, MD and Aimen S. Kasasbeh, MD, PhD.
Dr. Marshall's most frequent co-authors
- Chiazo S. Amene, MD1 shared paper
- Lissa Catherine Baird, MD1 shared paper
- Aimen S. Kasasbeh, MD, PhD1 shared paper
Recent publications by Dr. Marshall
See who Dr. Marshall researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Marshall works with, so you can find a warm path to the right family medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Larry J. Marshall received $5,119 in industry payments from 2016 to 2025
CMS Open Payments shows 325 general payments to Dr. Marshall from 34 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $1,172.
General payments to Dr. Marshall by program year, 2016 to 2025
General payments to Dr. Marshall by kind, 2016 to 2025
- Food and beverage$5,105100%
- Education$140%
Companies that paid Dr. Marshall 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. Larry J. Marshall graduated from Universidad Autonoma de Nuevo Leon
Dr. Marshall graduated from Universidad Autonoma de Nuevo Leon in 1985.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Larry J. Marshall accepts plans from 15 insurance carriers
Dr. Marshall is in network with 15 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +7 more carriersWith a free account
Plan types Dr. Marshall accepts, by number of carriers
- PPO9
- HMO6
- Medicare6
- EPO3
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Larry J. Marshall'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (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. Larry J. Marshall
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. Larry J. Marshall's NPI number?
Dr. Larry J. Marshall's NPI number is 1114018132. It was assigned on September 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Larry J. Marshall?
Dr. Larry J. Marshall is a family medicine physician in Lakeside, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Larry J. Marshall practice?
Dr. Marshall practices at 12517 Lakeshore Dr, Lakeside, CA 92040-3103. Dr. Marshall's primary practice is Larry J Marshall MD in Lakeside, California. Dmand AI also links Dr. Marshall to 1 hospital and 4 home health agencies.
What is Dr. Larry J. Marshall's office phone number?
The practice phone on file for Dr. Marshall is (619) 443-3843.
What is Dr. Larry J. Marshall's medical license number?
Dr. Marshall holds California license A52344, one of the licenses on file in 3 states.
Which states has Dr. Larry J. Marshall been licensed in?
Dmand AI has state licenses on file for Dr. Marshall in California (1993 to 2027), Nevada (2017 to 2027) and Texas (1996 to 2025).
Which hospitals is Dr. Larry J. Marshall affiliated with?
Dr. Marshall is affiliated with Sharp Memorial Hospital. Dmand AI links Dr. Marshall to 1 more hospital.
What medical group is Dr. Larry J. Marshall part of?
Dr. Marshall is linked to Emergency and Acute Care Medical Corporation.
Does Dr. Larry J. Marshall accept Medicare?
Yes. CMS data shows Dr. Marshall billed Medicare for 571 services in 2024, and Dr. Marshall accepts Medicare assignment.
Does Dr. Larry J. Marshall offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Marshall as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Larry J. Marshall see?
CMS counts 226 Medicare patients who saw Dr. Marshall in 2024, with an average age of 72.
Is Dr. Larry J. Marshall board certified?
Yes. Dr. Marshall is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. Larry J. Marshall bill to Medicare?
In 2024, Dr. Marshall's most billed Medicare services were office visit, established patient (99213), medicare service (G0439) and office visit, established patient (99214).
Where did Dr. Larry J. Marshall go to medical school?
Dr. Marshall graduated from Universidad Autonoma de Nuevo Leon in 1985.
What drugs does Dr. Larry J. Marshall prescribe most?
In 2024 Medicare Part D data, Dr. Marshall's most prescribed drugs by claims were Atorvastatin Calcium, Hydrochlorothiazide and Levothyroxine Sodium.
Has Dr. Larry J. Marshall received payments from drug or device companies?
CMS Open Payments shows $5,119 in general payments to Dr. Marshall from 34 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Larry J. Marshall been practicing?
Dr. Marshall graduated from medical school in 1985, 41 years ago.
Does Dr. Larry J. Marshall do research?
Dmand AI links 1 publication to Dr. Marshall.
Who does Dr. Larry J. Marshall publish with?
Dr. Marshall's most frequent co-authors are Chiazo S. Amene, MD (1 shared paper), Lissa Catherine Baird, MD (1 shared paper) and Aimen S. Kasasbeh, MD, PhD (1 shared paper).
What insurance does Dr. Larry J. Marshall accept?
Dr. Marshall is in network with 15 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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