Abraham Winkelstein

  • Shenandoah, TX
  • Gastroenterologist
NPI1548260920PAC ID3274537758
Medicare services, 2024
1,099
Medicare patients, 2024
593
Part D claims, 2024
1,174
Publications
27
MIPS score, 2024
75
Practice address
111 Vision Park Blvd STE 230, Shenandoah, TX 77384
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Woodlands Endoscopy Center - HOPD

Acute Care Hospital outpatient department · Shenandoah, Texas

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Abraham Winkelstein is a gastroenterologist in Shenandoah, Texas

Abraham Winkelstein practices at Woodlands Endoscopy Center - HOPD in Shenandoah, Texas.

Abraham Winkelstein's NPI, 1548260920, was assigned on July 27, 2005. Abraham Winkelstein graduated from Georgetown University School Of Medicine in 1991. Abraham Winkelstein's Texas license number on file is K4297.

NPI and contact details
Medicare PAC ID
3274537758
NPI enumeration date
July 27, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
61
Medical school graduation
1991

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Abraham Winkelstein practices at Woodlands Endoscopy Center - HOPD in Shenandoah, Texas

Abraham Winkelstein's primary practice is Woodlands Endoscopy Center - HOPD, at 111 Vision Park Blvd STE 230, Shenandoah, TX 77384.

  • Woodlands Endoscopy Center - HOPD
    111 Vision Park Blvd STE 230, Shenandoah, TX 77384

Source: Dmand AI Affiliation Data

Abraham Winkelstein is affiliated with 8 sites of care and 1 medical group

Abraham Winkelstein's primary practice is Woodlands Endoscopy Center - HOPD in Shenandoah, Texas. Abraham Winkelstein is also affiliated with Memorial Hermann Greater Heights Hospital. The medical group on file is Digestive Specialists, P.A. Dmand AI also links Abraham Winkelstein to 4 more hospitals, 1 group practice or clinic and 1 hospital outpatient department, each named with a free account.

See all 9 affiliations for Abraham Winkelstein

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Abraham Winkelstein's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Abraham Winkelstein practices, 8 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Woodlands Endoscopy Center - HOPDAvailable with a free account
+7 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Abraham Winkelstein is one of 1,341 gastroenterologists in Texas

Gastroenterology is Abraham Winkelstein's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Abraham Winkelstein is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Abraham Winkelstein's licenses on file in 2 states: Texas and California.

Specialties and state licenses

  • Gastroenterology, TexasPrimaryLicense K4297 · 1997 to 2025 · taxonomy 207RG0100X
  • California licenseSince 1992

Clinical focus

Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, fatty liver, gastroenteritis, intestinal diverticulosis and intestinal or bowel obstruction among the conditions Abraham Winkelstein treats.

Gastroenterologists near Abraham Winkelstein

Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.

1,341gastroenterologists in Texas
8gastroenterologists in Shenandoah

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Abraham Winkelstein billed Medicare for 1,099 services in 2024

CMS data shows 1,099 Medicare services from Abraham Winkelstein across 10 procedure codes in 2024, for 593 Medicare patients. Medicare paid $109,253 for them.

Medicare services, 20241,099
Medicare patients593
Paid by Medicare$109,253
Procedure codes10

Abraham Winkelstein's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2612024: 637144%
Surgery
2023: 4392024: 38313%
Other services
2023: 652024: 7922%

Where Abraham Winkelstein's Medicare services took place, 2024

  • In an office67261%
  • In a facility42739%

Abraham Winkelstein compared with the Texas median for gastroenterologists, 2024

  • Abraham Winkelstein
  • Texas median
Medicare services
1,099vs 5052.2 times
Medicare patients
593vs 2842.1 times
Part D claims
1,057vs 4932.1 times

Medians across 1,281 gastroenterologists in Texas with Dmand AI profiles that report each measure.

Abraham Winkelstein'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Abraham Winkelstein treated 593 Medicare patients in 2024, average age 73

CMS counts 593 Medicare patients who saw Abraham Winkelstein in 2024. The largest group is 65 to 74, with 355 patients. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 0.87, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Abraham Winkelstein's median patient age at 66, with 49% women.

Medicare patients, 2024593
Average age73
Average risk score0.87

Abraham Winkelstein's Medicare patients by age, 2024

Abraham Winkelstein's Medicare patients by sex, 2024

  • Women29049%
  • Men30351%

Chronic conditions among Abraham Winkelstein's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure71%
  3. Arthritis48%
  4. Ischemic heart disease29%
  5. Diabetes24%
  6. Anxiety21%
  7. Cancer17%
  8. Chronic kidney disease17%

Share of Medicare patients with each condition. A patient can have several.

Abraham Winkelstein'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

  • Women49%
  • Men50%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Abraham Winkelstein wrote 1,174 Medicare Part D claims in 2024

In 2024, Abraham Winkelstein wrote 1,174 Medicare Part D claims for 392 patients. 89% of them were for generic drugs. CMS names the drug for 1,057 of them, across 18 drugs with 11 or more claims each, at $133,671 in total drug cost. In 2023, CMS named 611 claims across 11 drugs.

Part D claims, 20241,174
Drugs named by CMS18
Total drug cost$133,671
Part D patients392

Abraham Winkelstein's Part D claims by kind of drug, 2024

  • Generic1,043 claims89%
  • Brand-name131 claims11%

Abraham Winkelstein'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 Abraham Winkelstein's Part D claims, 2024

  • Antibiotics3%38 of 1,174 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: 6112024: 1,05773%

Drugs named by CMS: 18 in 2024, 11 in 2023.

See all prescribing by Abraham Winkelstein

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

Abraham Winkelstein 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 Abraham Winkelstein for performance year 2024, reported individually. Abraham Winkelstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 103 procedures of colonoscopy by Abraham Winkelstein, more than 80% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
MIPS final score, 2024
75 of 100

Where Abraham Winkelstein ranks in Medicare procedure volume

Colonoscopy
80th percentile103 procedures
Upper gastrointestinal (GI) endoscopy for acid reflux
75th percentile92 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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Abraham Winkelstein has 27 publications on record

Dmand AI links 27 papers to Abraham Winkelstein. The most frequent topics are T-Lymphocytes, Immunoglobulin G and Lymphocyte Activation. Abraham Winkelstein has published most often in Am J Hematol. Abraham Winkelstein's most frequent co-authors are Franklin A. Bontempo, Margaret V. Ragni, MD and Stephan R. Targan, MD.

Papers27

Topics Abraham Winkelstein writes about most

  • T-Lymphocytes
  • Immunoglobulin G
  • Lymphocyte Activation
  • Acquired Immunodeficiency Syndrome
  • Interleukin-2
  • Phenotype
  • Receptors, Interleukin-2
  • Antibodies, Monoclonal

Abraham Winkelstein's most frequent co-authors

Recent publications by Abraham Winkelstein

See all 27 publications and co-authors

See who Abraham Winkelstein researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Abraham Winkelstein works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Abraham Winkelstein received $73 in industry payments from 2016 to 2025

CMS Open Payments shows 2 general payments to Abraham Winkelstein from 2 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. CONMED Corporation paid the most, $52.

General payments to Abraham Winkelstein by program year, 2016 to 2025

Companies that paid Abraham Winkelstein the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Abraham Winkelstein

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Abraham Winkelstein has 1 award and honors on record

Dmand AI lists 1 award for Abraham Winkelstein, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Abraham Winkelstein

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Abraham Winkelstein graduated from Georgetown University School Of Medicine

Abraham Winkelstein graduated from Georgetown University School Of Medicine in 1991.

  1. Medical schoolGeorgetown University School Of Medicine
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Abraham Winkelstein accepts plans from 11 insurance carriers

Abraham Winkelstein is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 7. Check the plan with the practice before a visit.

Plan types Abraham Winkelstein accepts, by number of carriers

  1. HMO7
  2. Medicare6
  3. PPO6
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Abraham Winkelstein'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
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 Abraham Winkelstein

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Abraham Winkelstein's NPI number?

Abraham Winkelstein's NPI number is 1548260920. It was assigned on July 27, 2005, and it is active in the NPI Registry.

What does Abraham Winkelstein specialize in?

Abraham Winkelstein is a gastroenterologist in Shenandoah, Texas. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Abraham Winkelstein practice?

Abraham Winkelstein practices at 111 Vision Park Blvd STE 230, Shenandoah, TX 77384. Abraham Winkelstein's primary practice is Woodlands Endoscopy Center - HOPD in Shenandoah, Texas. Dmand AI also links Abraham Winkelstein to 4 hospitals, 1 group practice or clinic and 1 hospital outpatient department.

What is Abraham Winkelstein's medical license number?

Abraham Winkelstein's Texas license number on file is K4297, one of the licenses on file in 2 states.

Which states has Abraham Winkelstein been licensed in?

Dmand AI has state licenses on file for Abraham Winkelstein in Texas (1997 to 2025) and California (since 1992).

Which hospitals is Abraham Winkelstein affiliated with?

Abraham Winkelstein is affiliated with Memorial Hermann Greater Heights Hospital. Dmand AI links Abraham Winkelstein to 4 more hospitals.

What medical group is Abraham Winkelstein part of?

Abraham Winkelstein is linked to Digestive Specialists, P.A.

Does Abraham Winkelstein accept Medicare?

Yes. CMS data shows Abraham Winkelstein billed Medicare for 1,099 services in 2024, and Abraham Winkelstein accepts Medicare assignment.

What is Abraham Winkelstein's MIPS score?

Abraham Winkelstein's MIPS final score for performance year 2024 is 75 out of 100, reported individually.

How many Medicare patients does Abraham Winkelstein see?

CMS counts 593 Medicare patients who saw Abraham Winkelstein in 2024, with an average age of 73.

Show 9 more questionsShow fewer questions

Is Abraham Winkelstein board certified?

Yes. Abraham Winkelstein is board certified in gastroenterology by the American Board of Internal Medicine.

What services does Abraham Winkelstein bill to Medicare?

In 2024, Abraham Winkelstein's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (45380) and surgery: digestive system (45385).

Where did Abraham Winkelstein go to medical school?

Abraham Winkelstein graduated from Georgetown University School Of Medicine in 1991.

What drugs does Abraham Winkelstein prescribe most?

In 2024 Medicare Part D data, Abraham Winkelstein's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Famotidine.

Has Abraham Winkelstein received payments from drug or device companies?

CMS Open Payments shows $73 in general payments to Abraham Winkelstein from 2 companies from 2016 to 2025. The largest total came from CONMED Corporation.

How long has Abraham Winkelstein been practicing?

Abraham Winkelstein graduated from medical school in 1991, 35 years ago.

Does Abraham Winkelstein do research?

Dmand AI links 27 publications to Abraham Winkelstein.

Who does Abraham Winkelstein publish with?

Abraham Winkelstein's most frequent co-authors are Franklin A. Bontempo (1 shared paper), Margaret V. Ragni, MD (1 shared paper) and Stephan R. Targan, MD (1 shared paper).

What insurance does Abraham Winkelstein accept?

Abraham Winkelstein is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 7. Check the plan with the practice before a visit.

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