Dr. Fredric E. Weiss, MD
- Medicare services, 2024
- 305
- Medicare patients, 2024
- 144
- Part D claims, 2024
- 157
- MIPS score, 2024
- 100
- Industry payments
- $3,054
- Practice address
- 3366 5th Ave, San Diego, CA 92103
- Practice phone
- Call (626) 793-9900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pasadena Endoscopy Center
San Diego, California
Find Dr. Weiss' professional email, personal email and mobile number
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Dr. Fredric E. Weiss is a gastroenterologist in San Diego, California
Dr. Weiss practices at Pasadena Endoscopy Center in San Diego, California.
Dr. Weiss' NPI, 1336354059, was assigned on May 14, 2007. Dr. Weiss graduated from Boston University School of Medicine in 1974. Dr. Weiss holds California license G29963.
- NPI
- 1336354059NPI Registry (opens in a new tab)
- NPI enumeration date
- May 14, 2007
- NPI status
- Active
- Practice phone
- (626) 793-9900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 78
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Fredric E. Weiss practices at Pasadena Endoscopy Center in San Diego, California
Dr. Weiss' primary practice is Pasadena Endoscopy Center, at 3366 5th Ave, San Diego, CA 92103 in San Diego County. The practice phone is (626) 793-9900.
- Pasadena Endoscopy Center3366 5th Ave, San Diego, CA 92103 · San Diego CountyPhone(626) 793-9900
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Fredric E. Weiss is affiliated with 3 sites of care and 1 medical group
Dr. Weiss' primary practice is Pasadena Endoscopy Center in San Diego, California. The medical group on file is Unio Specialty Care, Urology, Encinitas (formerly Genesis Healthcare Partners). Dmand AI also links Dr. Weiss to 1 more physician office and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Fredric E. Weiss' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Weiss practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pasadena Endoscopy Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Fredric E. Weiss is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Weiss' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Weiss is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Weiss
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. Fredric E. Weiss billed Medicare for 305 services in 2024
CMS data shows 305 Medicare services from Dr. Weiss across 5 procedure codes in 2024, for 144 Medicare patients. Medicare paid $19,732 for them. Every service was in an office.
Dr. Weiss' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1182024: 305158%
- Other services
- 2023: 182024: 0100%
Dr. Weiss compared with the California median for gastroenterologists, 2024
- Dr. Weiss
- California median
- Medicare services
- 305vs 58648% below
- Medicare patients
- 144vs 30252% below
- Part D claims
- 89vs 38077% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Weiss' 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. Weiss and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Fredric E. Weiss treated 144 Medicare patients in 2024, average age 76
CMS counts 144 Medicare patients who saw Dr. Weiss in 2024. The largest group is 65 to 74, with 60 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 27% are also on Medicaid. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Weiss' median patient age at 58, with 20% women.
Dr. Weiss' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Weiss' Medicare patients by sex, 2024
- Women7955%
- Men6545%
Chronic conditions among Dr. Weiss' Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis50%
- Anxiety31%
- Diabetes30%
- Ischemic heart disease29%
- Mood disorders25%
- Depression22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Weiss' 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
- Women20%
- Men80%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Fredric E. Weiss wrote 157 Medicare Part D claims in 2024
In 2024, Dr. Weiss wrote 157 Medicare Part D claims for 55 patients. 92% of them were for generic drugs. CMS names the drug for 89 of them, across 3 drugs with 11 or more claims each, at $1,429 in total drug cost. In 2023, CMS named 34 claims across 2 drugs.
Dr. Weiss' Part D claims by kind of drug, 2024
- Generic144 claims92%
- Brand-name13 claims8%
Dr. Weiss' 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. Weiss' Part D claims, 2024
- Antibiotics8%12 of 157 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: 342024: 89162%
Drugs named by CMS: 3 in 2024, 2 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. Fredric E. Weiss scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Weiss for performance year 2024, reported as part of a group.
Dr. Weiss' MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Fredric E. Weiss received $3,054 in industry payments from 2016 to 2025
CMS Open Payments shows 116 general payments to Dr. Weiss from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Abbvie Inc. paid the most, $327.
General payments to Dr. Weiss by program year, 2016 to 2025
General payments to Dr. Weiss by kind, 2016 to 2025
- Food and beverage$2,97998%
- Education$752%
Companies that paid Dr. Weiss 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. Fredric E. Weiss graduated from Boston University School of Medicine
Dr. Weiss graduated from Boston University School of Medicine in 1974.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Fredric E. Weiss'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 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 | Clinician Public Reporting: Overall MIPS Performance (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. Fredric E. Weiss
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. Fredric E. Weiss' NPI number?
Dr. Fredric E. Weiss' NPI number is 1336354059. It was assigned on May 14, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Fredric E. Weiss?
Dr. Fredric E. Weiss is a gastroenterologist in San Diego, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Fredric E. Weiss practice?
Dr. Weiss practices at 3366 5th Ave, San Diego, CA 92103. Dr. Weiss' primary practice is Pasadena Endoscopy Center in San Diego, California. Dmand AI also links Dr. Weiss to 1 physician office and 1 group practice or clinic.
What is Dr. Fredric E. Weiss' office phone number?
The practice phone on file for Dr. Weiss is (626) 793-9900.
What is Dr. Fredric E. Weiss' medical license number?
Dr. Weiss holds California license G29963.
What medical group is Dr. Fredric E. Weiss part of?
Dr. Weiss is linked to Unio Specialty Care, Urology, Encinitas (formerly Genesis Healthcare Partners).
Does Dr. Fredric E. Weiss accept Medicare?
Yes. CMS data shows Dr. Weiss billed Medicare for 305 services in 2024.
What is Dr. Fredric E. Weiss' MIPS score?
Dr. Weiss' MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Fredric E. Weiss see?
CMS counts 144 Medicare patients who saw Dr. Weiss in 2024, with an average age of 76.
What services does Dr. Fredric E. Weiss bill to Medicare?
In 2024, Dr. Weiss' most billed Medicare services were care management and other visits (99439), care management and other visits (99490) and office visit, established patient (99214).
Show 4 more questionsShow fewer questions
Where did Dr. Fredric E. Weiss go to medical school?
Dr. Weiss graduated from Boston University School of Medicine in 1974.
What drugs does Dr. Fredric E. Weiss prescribe most?
In 2024 Medicare Part D data, Dr. Weiss' most prescribed drugs by claims were Omeprazole, Lactulose and Pantoprazole Sodium.
Has Dr. Fredric E. Weiss received payments from drug or device companies?
CMS Open Payments shows $3,054 in general payments to Dr. Weiss from 26 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Fredric E. Weiss been practicing?
Dr. Weiss graduated from medical school in 1974, 52 years ago.
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