Dr. Gordon Daniel Liss, MD
- Medicare services, 2024
- 1,909
- Medicare patients, 2024
- 605
- Part D claims, 2024
- 604
- Hospital affiliations
- 3
- Industry payments
- $6,868
- Practice address
- 2205 Vista Way, Oceanside, CA 92054
- Practice phone
- Call (760) 704-5400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Scripps Medical Center Jefferson
Oceanside, California
Find Dr. Liss' 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. Gordon Daniel Liss is a gastroenterologist in Oceanside, California
Dr. Liss practices at Scripps Medical Center Jefferson in Oceanside, California.
Dr. Liss' NPI, 1669620746, was assigned on September 3, 2008. Dr. Liss graduated from Georgetown University School of Medicine in 2004. Dr. Liss holds Maryland license MD0070283.
- NPI
- 1669620746NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153514153
- NPI enumeration date
- September 3, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (760) 704-5400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gordon Daniel Liss practices at Scripps Medical Center Jefferson in Oceanside, California
Dr. Liss' primary practice is Scripps Medical Center Jefferson, at 2205 Vista Way, Oceanside, CA 92054 in San Diego County. The practice phone is (760) 704-5400.
- Scripps Medical Center Jefferson2205 Vista Way, Oceanside, CA 92054 · San Diego CountyPhone(760) 704-5400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gordon Daniel Liss is affiliated with 4 sites of care and 1 medical group
Dr. Liss' primary practice is Scripps Medical Center Jefferson in Oceanside, California. Dr. Liss is also affiliated with Scripps Memorial Hospital La Jolla. The medical group on file is Scripps Clinic Medical Group. Dmand AI also links Dr. Liss to 2 more hospitals, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gordon Daniel Liss' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Liss practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Scripps Medical Center Jefferson | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gordon Daniel Liss is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Liss' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Liss' licenses on file in 2 states: Maryland and California.
Specialties and state licenses
- Gastroenterology, MarylandPrimary
- California license
Gastroenterologists near Dr. Liss
Counts of gastroenterologists 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. Gordon Daniel Liss billed Medicare for 1,909 services in 2024
CMS data shows 1,909 Medicare services from Dr. Liss across 17 procedure codes in 2024, for 605 Medicare patients. Medicare paid $123,796 for them.
Dr. Liss' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3992024: 47920%
- Other services
- 2023: 1412024: 472235%
- Surgery
- 2023: 2962024: 47059%
- Drugs given in the office
- 2023: 02024: 295
- Tests and treatments
- 2023: 362024: 193436%
Where Dr. Liss' Medicare services took place, 2024
- In an office1,14060%
- In a facility76940%
Dr. Liss compared with the California median for gastroenterologists, 2024
- Dr. Liss
- California median
- Medicare services
- 1,909vs 5863.3 times
- Medicare patients
- 605vs 3022.0 times
- Part D claims
- 502vs 38032% above
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Liss' 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. Liss?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Liss and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gordon Daniel Liss treated 605 Medicare patients in 2024, average age 74
CMS counts 605 Medicare patients who saw Dr. Liss in 2024. The largest group is 65 to 74, with 319 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Liss' median patient age at 55, with 57% women.
Dr. Liss' Medicare patients by age, 2024
Dr. Liss' Medicare patients by sex, 2024
- Women36560%
- Men24040%
Chronic conditions among Dr. Liss' Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis43%
- Anxiety25%
- Ischemic heart disease24%
- Mood disorders24%
- Depression23%
- Osteoporosis23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Liss' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gordon Daniel Liss wrote 604 Medicare Part D claims in 2024
In 2024, Dr. Liss wrote 604 Medicare Part D claims for 297 patients. 87% of them were for generic drugs. CMS names the drug for 502 of them, across 8 drugs with 11 or more claims each, at $13,412 in total drug cost. In 2023, CMS named 585 claims across 9 drugs.
Dr. Liss' Part D claims by kind of drug, 2024
- Generic523 claims87%
- Brand-name81 claims13%
Dr. Liss' 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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5852024: 50214%
Drugs named by CMS: 8 in 2024, 9 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. Gordon Daniel Liss ranks in the 88th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Liss accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Liss as offering telehealth. CMS counts 177 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Liss, more than 88% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Liss ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 88th percentile177 procedures
- Colonoscopy
- 84th percentile123 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gordon Daniel Liss received $6,868 in industry payments from 2016 to 2025
CMS Open Payments shows 353 general payments to Dr. Liss from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Abbvie Inc. paid the most, $1,606.
General payments to Dr. Liss by program year, 2016 to 2025
General payments to Dr. Liss by kind, 2016 to 2025
- Food and beverage$6,67897%
- Education$1903%
Companies that paid Dr. Liss 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. Gordon Daniel Liss graduated from Georgetown University School of Medicine
Dr. Liss graduated from Georgetown University School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gordon Daniel Liss'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Gordon Daniel Liss
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. Gordon Daniel Liss' NPI number?
Dr. Gordon Daniel Liss' NPI number is 1669620746. It was assigned on September 3, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Gordon Daniel Liss?
Dr. Gordon Daniel Liss is a gastroenterologist in Oceanside, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Gordon Daniel Liss practice?
Dr. Liss practices at 2205 Vista Way, Oceanside, CA 92054. Dr. Liss' primary practice is Scripps Medical Center Jefferson in Oceanside, California. Dmand AI also links Dr. Liss to 2 hospitals.
What is Dr. Gordon Daniel Liss' office phone number?
The practice phone on file for Dr. Liss is (760) 704-5400.
What is Dr. Gordon Daniel Liss' medical license number?
Dr. Liss holds Maryland license MD0070283, one of the licenses on file in 2 states.
Which states has Dr. Gordon Daniel Liss been licensed in?
Dmand AI has state licenses on file for Dr. Liss in Maryland and California.
Which hospitals is Dr. Gordon Daniel Liss affiliated with?
Dr. Liss is affiliated with Scripps Memorial Hospital La Jolla. Dmand AI links Dr. Liss to 2 more hospitals.
What medical group is Dr. Gordon Daniel Liss part of?
Dr. Liss is linked to Scripps Clinic Medical Group.
Does Dr. Gordon Daniel Liss accept Medicare?
Yes. CMS data shows Dr. Liss billed Medicare for 1,909 services in 2024, and Dr. Liss accepts Medicare assignment.
Does Dr. Gordon Daniel Liss offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Liss as offering telehealth services.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Gordon Daniel Liss see?
CMS counts 605 Medicare patients who saw Dr. Liss in 2024, with an average age of 74.
What services does Dr. Gordon Daniel Liss bill to Medicare?
In 2024, Dr. Liss' most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and injected or infused drug (J1626).
Where did Dr. Gordon Daniel Liss go to medical school?
Dr. Liss graduated from Georgetown University School of Medicine in 2004.
What drugs does Dr. Gordon Daniel Liss prescribe most?
In 2024 Medicare Part D data, Dr. Liss' most prescribed drugs by claims were Sod Sulf-Potass Sulf-Mag Sulf, Omeprazole and Pantoprazole Sodium.
Has Dr. Gordon Daniel Liss received payments from drug or device companies?
CMS Open Payments shows $6,868 in general payments to Dr. Liss from 43 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Gordon Daniel Liss been practicing?
Dr. Liss graduated from medical school in 2004, 22 years ago.
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