Dr. Keith A. Leibowitz, MD
- Medicare services, 2024
- 337
- Medicare patients, 2024
- 154
- Part D claims, 2024
- 154
- Hospital affiliations
- 4
- Industry payments
- $4,408
- Practice address
- 1441 Florida Avenue, Modesto, CA 95350
- Practice phone
- Call (209) 578-1211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Leibowitz'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. Keith A. Leibowitz is a gastroenterologist in Modesto, California
Dr. Leibowitz practices at Doctors Medical Center Modesto in Modesto, California, part of Tenet Healthcare.
Dr. Leibowitz's NPI, 1083689335, was assigned on February 21, 2006. Dr. Leibowitz graduated from New York Medical College in 1985. Dr. Leibowitz holds California license G129017.
- NPI
- 1083689335NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305889148
- NPI enumeration date
- February 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 578-1211
- 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. Keith A. Leibowitz practices at Doctors Medical Center Modesto in Modesto, California
Dr. Leibowitz's primary practice is Doctors Medical Center Modesto, at 1441 Florida Avenue, Modesto, CA 95350 in Stanislaus County. The practice phone is (209) 578-1211.
- Doctors Medical Center Modesto1441 Florida Avenue, Modesto, CA 95350 · Stanislaus CountyPhone(209) 578-1211
Source: Dmand AI Affiliation Data
Dr. Keith A. Leibowitz is affiliated with 6 sites of care and 1 medical group
Dr. Leibowitz's primary practice is Doctors Medical Center Modesto in Modesto, California, part of Tenet Healthcare. Dr. Leibowitz is also affiliated with Adventist Health Sonora. The medical group on file is Central Valley Gastro Association Inc. Dmand AI also links Dr. Leibowitz to 2 more hospitals, 1 physician office and 1 group practice or clinic, 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. Keith A. Leibowitz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leibowitz practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Doctors Medical Center Modesto | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Keith A. Leibowitz is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Leibowitz's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Leibowitz is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Leibowitz's licenses on file in 4 states: California, Virginia, New York and Florida.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Virginia license
- New York license
- Florida license
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, chronic anemia, chronic indigestion, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, gastrointestinal bleeding and hemorrhoids among the conditions Dr. Leibowitz treats.
Gastroenterologists near Dr. Leibowitz
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. Keith A. Leibowitz billed Medicare for 337 services in 2024
CMS data shows 337 Medicare services from Dr. Leibowitz across 5 procedure codes in 2024, for 154 Medicare patients. Medicare paid $23,360 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Leibowitz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4282024: 27436%
- Surgery
- 2023: 1852024: 6366%
Dr. Leibowitz compared with the California median for gastroenterologists, 2024
- Dr. Leibowitz
- California median
- Medicare services
- 337vs 58642% below
- Medicare patients
- 154vs 30249% below
- Part D claims
- 87vs 38077% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Leibowitz'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. Leibowitz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leibowitz and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Keith A. Leibowitz treated 154 Medicare patients in 2024, average age 74
CMS counts 154 Medicare patients who saw Dr. Leibowitz in 2024. The largest group is 75 to 84, with 58 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 2.70, 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. Leibowitz's median patient age at 69, with 47% women.
Dr. Leibowitz's Medicare patients by age, 2024
Dr. Leibowitz's Medicare patients by sex, 2024
- Women7549%
- Men7951%
Chronic conditions among Dr. Leibowitz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes63%
- Chronic kidney disease52%
- Heart failure47%
- Ischemic heart disease45%
- Arthritis42%
- Atrial fibrillation38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leibowitz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Keith A. Leibowitz wrote 154 Medicare Part D claims in 2024
In 2024, Dr. Leibowitz wrote 154 Medicare Part D claims for 57 patients. 88% of them were for generic drugs. CMS names the drug for 87 of them, across 3 drugs with 11 or more claims each, at $6,014 in total drug cost. In 2023, CMS named 854 claims across 18 drugs.
Dr. Leibowitz's Part D claims by kind of drug, 2024
- Generic136 claims88%
- Brand-name18 claims12%
Dr. Leibowitz'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8542024: 8790%
Drugs named by CMS: 3 in 2024, 18 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. Keith A. Leibowitz ranks in the 81st percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Leibowitz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 126 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Leibowitz, more than 81% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Leibowitz ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 81st percentile126 procedures
- Colonoscopy
- 61st percentile44 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. Keith A. Leibowitz received $4,408 in industry payments from 2016 to 2023
CMS Open Payments shows 275 general payments to Dr. Leibowitz from 21 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,682.
General payments to Dr. Leibowitz by program year, 2016 to 2023
General payments to Dr. Leibowitz by kind, 2016 to 2023
- Food and beverage$4,387100%
- Education$210%
Companies that paid Dr. Leibowitz the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Keith A. Leibowitz has 1 award and honors on record
Dmand AI lists 1 award for Dr. Leibowitz, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Leibowitz
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Keith A. Leibowitz graduated from New York Medical College
Dr. Leibowitz graduated from New York Medical College in 1985.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Keith A. Leibowitz accepts plans from 3 insurance carriers
Dr. Leibowitz is in network with 3 carriers, including Elevance, HCSC and CMS Medicare. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Elevance
- HCSC
- CMS Medicare
Plan types Dr. Leibowitz accepts, by number of carriers
- Medicare3
- PPO2
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Keith A. Leibowitz'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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Keith A. Leibowitz
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. Keith A. Leibowitz's NPI number?
Dr. Keith A. Leibowitz's NPI number is 1083689335. It was assigned on February 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Keith A. Leibowitz?
Dr. Keith A. Leibowitz is a gastroenterologist in Modesto, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Keith A. Leibowitz practice?
Dr. Leibowitz practices at 1441 Florida Avenue, Modesto, CA 95350. Dr. Leibowitz's primary practice is Doctors Medical Center Modesto in Modesto, California, part of Tenet Healthcare. Dmand AI also links Dr. Leibowitz to 2 hospitals, 1 physician office and 1 group practice or clinic.
What is Dr. Keith A. Leibowitz's office phone number?
The practice phone on file for Dr. Leibowitz is (209) 578-1211.
What is Dr. Keith A. Leibowitz's medical license number?
Dr. Leibowitz holds California license G129017, one of the licenses on file in 4 states.
Which states has Dr. Keith A. Leibowitz been licensed in?
Dmand AI has state licenses on file for Dr. Leibowitz in California (2014 to 2027), Virginia (2005 to 2022), New York (1989 to 2013) and Florida (1986 to 1998).
Which hospitals is Dr. Keith A. Leibowitz affiliated with?
Dr. Leibowitz practices at Doctors Medical Center Modesto in Modesto, California. Dr. Leibowitz is also affiliated with Adventist Health Sonora. Dmand AI links Dr. Leibowitz to 2 more hospitals.
What medical group is Dr. Keith A. Leibowitz part of?
Dr. Leibowitz is linked to Central Valley Gastro Association Inc.
Does Dr. Keith A. Leibowitz accept Medicare?
Yes. CMS data shows Dr. Leibowitz billed Medicare for 337 services in 2024, and Dr. Leibowitz accepts Medicare assignment.
How many Medicare patients does Dr. Keith A. Leibowitz see?
CMS counts 154 Medicare patients who saw Dr. Leibowitz in 2024, with an average age of 74.
Show 7 more questionsShow fewer questions
Is Dr. Keith A. Leibowitz board certified?
Yes. Dr. Leibowitz is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Keith A. Leibowitz bill to Medicare?
In 2024, Dr. Leibowitz's most billed Medicare services were hospital inpatient care (99222), hospital inpatient care (99231) and surgery: digestive system (43239).
Where did Dr. Keith A. Leibowitz go to medical school?
Dr. Leibowitz graduated from New York Medical College in 1985.
What drugs does Dr. Keith A. Leibowitz prescribe most?
In 2024 Medicare Part D data, Dr. Leibowitz's most prescribed drugs by claims were Famotidine, Pantoprazole Sodium and Mesalamine.
Has Dr. Keith A. Leibowitz received payments from drug or device companies?
CMS Open Payments shows $4,408 in general payments to Dr. Leibowitz from 21 companies from 2016 to 2023. The largest total came from Abbvie Inc.
How long has Dr. Keith A. Leibowitz been practicing?
Dr. Leibowitz graduated from medical school in 1985, 41 years ago.
What insurance does Dr. Keith A. Leibowitz accept?
Dr. Leibowitz is in network with 3 carriers, including Elevance, HCSC and CMS Medicare. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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