Dr. Isaac Anthony Bartley, MD
- Medicare services, 2024
- 1,492
- Medicare patients, 2024
- 392
- Part D claims, 2024
- 529
- MIPS score, 2024
- 75
- Hospital affiliations
- 3
- Practice address
- 1560 E Chevy Chase Dr, Glendale, CA 91206
- Practice phone
- Call (626) 797-9883
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pasadena Gastroenterology Medical Group Inc
Glendale, California
Find Dr. Bartley'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. Isaac Anthony Bartley is a gastroenterologist in Glendale, California
Dr. Bartley practices at Pasadena Gastroenterology Medical Group Inc in Glendale, California.
Dr. Bartley's NPI, 1710088729, was assigned on September 25, 2006. Dr. Bartley graduated from Tufts University School Of Medicine in 1982. Dr. Bartley holds California license G50351.
- NPI
- 1710088729NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729175740
- NPI enumeration date
- September 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (626) 797-9883
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Isaac Anthony Bartley practices at Pasadena Gastroenterology Medical Group Inc in Glendale, California
Dr. Bartley's primary practice is Pasadena Gastroenterology Medical Group Inc, at 1560 E Chevy Chase Dr, Glendale, CA 91206 in Los Angeles County. The practice phone is (626) 797-9883.
- Pasadena Gastroenterology Medical Group Inc1560 E Chevy Chase Dr, Glendale, CA 91206 · Los Angeles CountyPhone(626) 797-9883
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Isaac Anthony Bartley is affiliated with 5 sites of care
Dr. Bartley's primary practice is Pasadena Gastroenterology Medical Group Inc in Glendale, California. Dr. Bartley is also affiliated with USC Verdugo Hills Hospital. Dmand AI also links Dr. Bartley to 2 more hospitals and 1 physician office, 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. Isaac Anthony Bartley's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bartley practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pasadena Gastroenterology Medical Group Inc | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Isaac Anthony Bartley is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Bartley's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Bartley is board certified in internal medicine by the American Board of Internal Medicine. Dr. Bartley is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, chronic indigestion, chronic inflammatory bowel disease (IBD), colonoscopy, gastroduodenitis, gastroenteritis, gastrointestinal bleeding and hemorrhoids among the conditions Dr. Bartley treats.
Gastroenterologists near Dr. Bartley
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. Isaac Anthony Bartley billed Medicare for 1,492 services in 2024
CMS data shows 1,492 Medicare services from Dr. Bartley across 14 procedure codes in 2024, for 392 Medicare patients. Medicare paid $146,461 for them.
Dr. Bartley's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0352024: 1,26022%
- Surgery
- 2023: 1612024: 1727%
- Other services
- 2023: 392024: 39No change
- Tests and treatments
- 2023: 172024: 2124%
Where Dr. Bartley's Medicare services took place, 2024
- In an office15510%
- In a facility1,33790%
Dr. Bartley compared with the California median for gastroenterologists, 2024
- Dr. Bartley
- California median
- Medicare services
- 1,492vs 5862.5 times
- Medicare patients
- 392vs 30230% above
- Part D claims
- 423vs 38011% above
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Bartley'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.
Need commercial claims for Dr. Bartley?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Bartley and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Isaac Anthony Bartley treated 392 Medicare patients in 2024, average age 76
CMS counts 392 Medicare patients who saw Dr. Bartley in 2024. The largest group is 65 to 74, with 151 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 66% are also on Medicaid. Their average risk score is 2.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Bartley's median patient age at 66, with 59% women.
Dr. Bartley's Medicare patients by age, 2024
Dr. Bartley's Medicare patients by sex, 2024
- Women21655%
- Men17645%
Chronic conditions among Dr. Bartley's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis68%
- Diabetes62%
- Ischemic heart disease59%
- Chronic kidney disease53%
- Heart failure51%
- Mood disorders47%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bartley's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Isaac Anthony Bartley wrote 529 Medicare Part D claims in 2024
In 2024, Dr. Bartley wrote 529 Medicare Part D claims for 200 patients. 81% of them were for generic drugs. CMS names the drug for 423 of them, across 12 drugs with 11 or more claims each, at $179,651 in total drug cost. In 2023, CMS named 434 claims across 9 drugs.
Dr. Bartley's Part D claims by kind of drug, 2024
- Generic430 claims81%
- Brand-name99 claims19%
Dr. Bartley'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. Bartley's Part D claims, 2024
- Antibiotics2%11 of 529 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: 4342024: 4233%
Drugs named by CMS: 12 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. Isaac Anthony Bartley scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Bartley for performance year 2024, reported individually. Dr. Bartley accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Bartley as offering telehealth. CMS counts 144 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Bartley, more than 84% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- MIPS final score, 2024
- 75 of 100
Where Dr. Bartley ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 84th percentile144 procedures
- Colonoscopy
- 81st percentile106 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Isaac Anthony Bartley received $569 in industry payments from 2017 to 2023
CMS Open Payments shows 14 general payments to Dr. Bartley from 10 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 97% of the total. Apollo Endosurgery US Inc paid the most, $139.
General payments to Dr. Bartley by program year, 2017 to 2023
General payments to Dr. Bartley by kind, 2017 to 2023
- Food and beverage$55597%
- Education$153%
Companies that paid Dr. Bartley the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Isaac Anthony Bartley graduated from Tufts University School Of Medicine
Dr. Bartley graduated from Tufts University School Of Medicine in 1982.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Isaac Anthony Bartley accepts plans from 10 insurance carriers
Dr. Bartley is in network with 10 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- LA Care
- Molina
- Regence Health Plans
- +2 more carriersWith a free account
Plan types Dr. Bartley accepts, by number of carriers
- Medicare8
- HMO6
- PPO6
- POS3
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Isaac Anthony Bartley'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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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. Isaac Anthony Bartley
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. Isaac Anthony Bartley's NPI number?
Dr. Isaac Anthony Bartley's NPI number is 1710088729. It was assigned on September 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Isaac Anthony Bartley?
Dr. Isaac Anthony Bartley is a gastroenterologist in Glendale, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Isaac Anthony Bartley practice?
Dr. Bartley practices at 1560 E Chevy Chase Dr, Glendale, CA 91206. Dr. Bartley's primary practice is Pasadena Gastroenterology Medical Group Inc in Glendale, California. Dmand AI also links Dr. Bartley to 2 hospitals and 1 physician office.
What is Dr. Isaac Anthony Bartley's office phone number?
The practice phone on file for Dr. Bartley is (626) 797-9883.
What is Dr. Isaac Anthony Bartley's medical license number?
Dr. Bartley holds California license G50351.
Which hospitals is Dr. Isaac Anthony Bartley affiliated with?
Dr. Bartley is affiliated with USC Verdugo Hills Hospital. Dmand AI links Dr. Bartley to 2 more hospitals.
Does Dr. Isaac Anthony Bartley accept Medicare?
Yes. CMS data shows Dr. Bartley billed Medicare for 1,492 services in 2024, and Dr. Bartley accepts Medicare assignment.
Does Dr. Isaac Anthony Bartley offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Bartley as offering telehealth services.
What is Dr. Isaac Anthony Bartley's MIPS score?
Dr. Bartley's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Isaac Anthony Bartley see?
CMS counts 392 Medicare patients who saw Dr. Bartley in 2024, with an average age of 76.
Show 7 more questionsShow fewer questions
Is Dr. Isaac Anthony Bartley board certified?
Yes. Dr. Bartley is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Isaac Anthony Bartley bill to Medicare?
In 2024, Dr. Bartley's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99232).
Where did Dr. Isaac Anthony Bartley go to medical school?
Dr. Bartley graduated from Tufts University School Of Medicine in 1982.
What drugs does Dr. Isaac Anthony Bartley prescribe most?
In 2024 Medicare Part D data, Dr. Bartley's most prescribed drugs by claims were Sod Sulf-Potass Sulf-Mag Sulf, Omeprazole and Pantoprazole Sodium.
Has Dr. Isaac Anthony Bartley received payments from drug or device companies?
CMS Open Payments shows $569 in general payments to Dr. Bartley from 10 companies from 2017 to 2023. The largest total came from Apollo Endosurgery US Inc.
How long has Dr. Isaac Anthony Bartley been practicing?
Dr. Bartley graduated from medical school in 1982, 44 years ago.
What insurance does Dr. Isaac Anthony Bartley accept?
Dr. Bartley is in network with 10 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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