Dr. Gaspar M. Nazareno, MD
- Medicare services, 2024
- 1,664
- Medicare patients, 2024
- 878
- Part D claims, 2024
- 1,385
- Hospital affiliations
- 3
- Industry payments
- $8,134
- Practice address
- 1409 Briggsmore Avenue, Modesto, CA 95355
- Practice phone
- Call (209) 613-7828
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Briggsmore Specialty Center
Surgery Center - Medicare-Certified · Modesto, California
Find Dr. Nazareno'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. Gaspar M. Nazareno is a gastroenterologist in Modesto, California
Dr. Nazareno practices at Briggsmore Specialty Center in Modesto, California.
Dr. Nazareno's NPI, 1326096603, was assigned on May 5, 2006. Dr. Nazareno graduated from De La Salle University College of Medicine in 1993. Dr. Nazareno holds California license A68335.
- NPI
- 1326096603NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618935933
- NPI enumeration date
- May 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (209) 613-7828
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gaspar M. Nazareno practices at Briggsmore Specialty Center in Modesto, California
Dr. Nazareno's primary practice is Briggsmore Specialty Center, at 1409 Briggsmore Avenue, Modesto, CA 95355. The practice phone is (209) 613-7828.
- Briggsmore Specialty Center1409 Briggsmore Avenue, Modesto, CA 95355Phone(209) 613-7828
Source: Dmand AI Affiliation Data
Dr. Gaspar M. Nazareno is affiliated with 4 sites of care and 1 medical group
Dr. Nazareno's primary practice is Briggsmore Specialty Center in Modesto, California. Dr. Nazareno is also affiliated with Memorial Medical Center. The medical group on file is SGMF Radiology. Dmand AI also links Dr. Nazareno to 2 more hospitals, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gaspar M. Nazareno's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nazareno practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Briggsmore Specialty Center | 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. Gaspar M. Nazareno is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Nazareno's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Nazareno is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Nazareno is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, chronic indigestion, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, fatty liver and gastroenteritis among the conditions Dr. Nazareno treats.
Gastroenterologists near Dr. Nazareno
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. Gaspar M. Nazareno billed Medicare for 1,664 services in 2024
CMS data shows 1,664 Medicare services from Dr. Nazareno across 19 procedure codes in 2024, for 878 Medicare patients. Medicare paid $168,232 for them.
Dr. Nazareno's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1,0362024: 1,0202%
- Office and hospital visits
- 2023: 3282024: 40323%
- Other services
- 2023: 2462024: 21413%
- Tests and treatments
- 2023: 182024: 2750%
Where Dr. Nazareno's Medicare services took place, 2024
- In an office31919%
- In a facility1,34581%
Dr. Nazareno compared with the California median for gastroenterologists, 2024
- Dr. Nazareno
- California median
- Medicare services
- 1,664vs 5862.8 times
- Medicare patients
- 878vs 3022.9 times
- Part D claims
- 1,120vs 3802.9 times
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Nazareno'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. Nazareno and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gaspar M. Nazareno treated 878 Medicare patients in 2024, average age 73
CMS counts 878 Medicare patients who saw Dr. Nazareno in 2024. The largest group is 65 to 74, with 412 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.37, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nazareno's median patient age at 64, with 56% women.
Dr. Nazareno's Medicare patients by age, 2024
Dr. Nazareno's Medicare patients by sex, 2024
- Women52059%
- Men35841%
Chronic conditions among Dr. Nazareno's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Diabetes35%
- Chronic kidney disease30%
- Ischemic heart disease27%
- Anxiety26%
- Mood disorders25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nazareno's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women56%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gaspar M. Nazareno wrote 1,385 Medicare Part D claims in 2024
In 2024, Dr. Nazareno wrote 1,385 Medicare Part D claims for 371 patients. 80% of them were for generic drugs. CMS names the drug for 1,120 of them, across 39 drugs with 11 or more claims each, at $1,485,822 in total drug cost. In 2023, CMS named 1,151 claims across 36 drugs.
Dr. Nazareno's Part D claims by kind of drug, 2024
- Generic1,106 claims80%
- Brand-name and other279 claims20%
Dr. Nazareno'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. Nazareno's Part D claims, 2024
- Antibiotics6%79 of 1,385 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: 1,1512024: 1,1203%
Drugs named by CMS: 39 in 2024, 36 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. Gaspar M. Nazareno ranks in the 98th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Nazareno accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nazareno as offering telehealth. CMS counts 499 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Nazareno, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Nazareno ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 98th percentile499 procedures
- Colonoscopy
- 98th percentile384 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. Gaspar M. Nazareno received $8,134 in industry payments from 2016 to 2025
CMS Open Payments shows 431 general payments to Dr. Nazareno from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Abbvie Inc. paid the most, $3,980.
General payments to Dr. Nazareno by program year, 2016 to 2025
General payments to Dr. Nazareno by kind, 2016 to 2025
- Food and beverage$7,80396%
- Travel and lodging$2934%
- Education$380%
Companies that paid Dr. Nazareno 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. Gaspar M. Nazareno graduated from De La Salle University College of Medicine
Dr. Nazareno graduated from De La Salle University College of Medicine in 1993.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Gaspar M. Nazareno accepts plans from 14 insurance carriers
Dr. Nazareno is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Nazareno accepts, by number of carriers
- PPO9
- HMO7
- Medicare7
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Gaspar M. Nazareno'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 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 |
| 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. Gaspar M. Nazareno
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. Gaspar M. Nazareno's NPI number?
Dr. Gaspar M. Nazareno's NPI number is 1326096603. It was assigned on May 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gaspar M. Nazareno?
Dr. Gaspar M. Nazareno is a gastroenterologist in Modesto, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Gaspar M. Nazareno practice?
Dr. Nazareno practices at 1409 Briggsmore Avenue, Modesto, CA 95355. Dr. Nazareno's primary practice is Briggsmore Specialty Center in Modesto, California. Dmand AI also links Dr. Nazareno to 2 hospitals.
What is Dr. Gaspar M. Nazareno's office phone number?
The practice phone on file for Dr. Nazareno is (209) 613-7828.
What is Dr. Gaspar M. Nazareno's medical license number?
Dr. Nazareno holds California license A68335.
Which hospitals is Dr. Gaspar M. Nazareno affiliated with?
Dr. Nazareno is affiliated with Memorial Medical Center. Dmand AI links Dr. Nazareno to 2 more hospitals.
What medical group is Dr. Gaspar M. Nazareno part of?
Dr. Nazareno is linked to SGMF Radiology.
Does Dr. Gaspar M. Nazareno accept Medicare?
Yes. CMS data shows Dr. Nazareno billed Medicare for 1,664 services in 2024, and Dr. Nazareno accepts Medicare assignment.
Does Dr. Gaspar M. Nazareno offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nazareno as offering telehealth services.
How many Medicare patients does Dr. Gaspar M. Nazareno see?
CMS counts 878 Medicare patients who saw Dr. Nazareno in 2024, with an average age of 73.
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Is Dr. Gaspar M. Nazareno board certified?
Yes. Dr. Nazareno is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Gaspar M. Nazareno bill to Medicare?
In 2024, Dr. Nazareno's most billed Medicare services were surgery: digestive system (43239), surgery: digestive system (45385) and surgery: digestive system (45380).
Where did Dr. Gaspar M. Nazareno go to medical school?
Dr. Nazareno graduated from De La Salle University College of Medicine in 1993.
What drugs does Dr. Gaspar M. Nazareno prescribe most?
In 2024 Medicare Part D data, Dr. Nazareno's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Sod Sulf-Potass Sulf-Mag Sulf.
Has Dr. Gaspar M. Nazareno received payments from drug or device companies?
CMS Open Payments shows $8,134 in general payments to Dr. Nazareno from 22 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Gaspar M. Nazareno been practicing?
Dr. Nazareno graduated from medical school in 1993, 33 years ago.
What insurance does Dr. Gaspar M. Nazareno accept?
Dr. Nazareno is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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