Dr. Keith A. Leibowitz, MD

  • Modesto, CA
  • Gastroenterologist
NPI1083689335PAC ID6305889148
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
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Personal email
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Mobile number
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Social profiles

Primary practice

Doctors Medical Center Modesto

Hospital · Modesto, California

See all 7 affiliations

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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 and contact details
Medicare PAC ID
6305889148
NPI enumeration date
February 21, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(209) 578-1211
Professional email
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Personal email
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Mobile number
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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.

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.

See all 7 affiliations for Dr. Leibowitz

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.

EHR by site
SiteEHR vendor and product
Doctors Medical Center ModestoAvailable with a free account
+5 more affiliated sitesAvailable 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, CaliforniaPrimaryLicense G129017 · 2014 to 2027 · taxonomy 207RG0100X
  • Virginia licenseLicense 0101239026 · 2005 to 2022
  • New York license1989 to 2013
  • Florida license1986 to 1998

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.

Medicare services, 2024337
Medicare patients154
Paid by Medicare$23,360
Procedure codes5

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.

See all procedures by Dr. Leibowitz

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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.

Medicare patients, 2024154
Average age74
Average risk score2.70
Also on Medicaid60%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes63%
  4. Chronic kidney disease52%
  5. Heart failure47%
  6. Ischemic heart disease45%
  7. Arthritis42%
  8. 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.

Part D claims, 2024154
Drugs named by CMS3
Total drug cost$6,014
Part D patients57

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.

See all prescribing by Dr. Leibowitz

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

$4.4Kin total
  • 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.

See all payments to Dr. Leibowitz

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

  1. 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.

  1. Medical schoolNew York Medical College
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of 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

  1. Medicare3
  2. PPO2
  3. EPO1
  4. HMO1
  5. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Keith A. Leibowitz's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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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