Dr. Allan Walter Barbish, MD
- Medicare services, 2024
- 291
- Medicare patients, 2024
- 268
- Part D claims, 2024
- 546
- MIPS score, 2024
- 86
- Hospital affiliations
- 4
- Practice address
- 3300 Cooley Court, Portage, MI 49024
- Practice phone
- Call (269) 321-3390
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kalamazoo Endo Center
Surgery Center - Medicare-Certified · Portage, Michigan
Find Dr. Barbish's professional email, personal email and mobile number
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Dr. Allan Walter Barbish is a gastroenterologist in Portage, Michigan
Dr. Barbish practices at Kalamazoo Endo Center in Portage, Michigan.
Dr. Barbish's NPI, 1891743191, was assigned on May 5, 2006. Dr. Barbish graduated from Wayne State University School of Medicine in 1986. Dr. Barbish holds Michigan license 4301406927.
- NPI
- 1891743191NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123928827
- NPI enumeration date
- May 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (269) 321-3390
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Allan Walter Barbish practices at Kalamazoo Endo Center in Portage, Michigan
Dr. Barbish's primary practice is Kalamazoo Endo Center, at 3300 Cooley Court, Portage, MI 49024. The practice phone is (269) 321-3390.
- Kalamazoo Endo Center3300 Cooley Court, Portage, MI 49024Phone(269) 321-3390
Source: Dmand AI Affiliation Data
Dr. Allan Walter Barbish is affiliated with 7 sites of care and 2 medical groups
Dr. Barbish's primary practice is Kalamazoo Endo Center in Portage, Michigan. Dr. Barbish is also affiliated with Bronson Methodist Hospital. The medical group on file is Bronson Medical Group. Dmand AI also links Dr. Barbish to 3 more hospitals, 2 group practices and clinics and 1 medical group, 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. Allan Walter Barbish's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barbish practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kalamazoo Endo Center | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Allan Walter Barbish is one of 487 gastroenterologists in Michigan
Gastroenterology is Dr. Barbish's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Barbish's licenses on file in 2 states: Michigan and Indiana.
Specialties and state licenses
- Gastroenterology, MichiganPrimary
- Indiana license
Gastroenterologists near Dr. Barbish
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. Allan Walter Barbish billed Medicare for 291 services in 2024
CMS data shows 291 Medicare services from Dr. Barbish across 8 procedure codes in 2024, for 268 Medicare patients. Medicare paid $36,352 for them.
Dr. Barbish's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1942024: 1864%
- Other services
- 2023: 492024: 6124%
- Office and hospital visits
- 2023: 742024: 4441%
Where Dr. Barbish's Medicare services took place, 2024
- In an office4415%
- In a facility24785%
Dr. Barbish compared with the Michigan median for gastroenterologists, 2024
- Dr. Barbish
- Michigan median
- Medicare services
- 291vs 32410% below
- Medicare patients
- 268vs 23017% above
- Part D claims
- 424vs 424Close to median
Medians across 487 gastroenterologists in Michigan with Dmand AI profiles that report each measure.
Dr. Barbish'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. Barbish and other gastroenterologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Allan Walter Barbish treated 268 Medicare patients in 2024, average age 71
CMS counts 268 Medicare patients who saw Dr. Barbish in 2024. The largest group is 65 to 74, with 167 patients. 72% of them have high cholesterol, and 60% have high blood pressure. 7% are also on Medicaid. Their average risk score is 0.98, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Barbish's median patient age at 61, with 59% women.
Dr. Barbish's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Barbish's Medicare patients by sex, 2024
- Women14654%
- Men12246%
Chronic conditions among Dr. Barbish's Medicare patients, 2024
- High cholesterol72%
- High blood pressure60%
- Arthritis41%
- Mood disorders26%
- Anxiety25%
- Diabetes24%
- Depression23%
- Chronic kidney disease17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barbish's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Allan Walter Barbish wrote 546 Medicare Part D claims in 2024
In 2024, Dr. Barbish wrote 546 Medicare Part D claims for 268 patients. 86% of them were for generic drugs. CMS names the drug for 424 of them, across 8 drugs with 11 or more claims each, at $58,806 in total drug cost. In 2023, CMS named 438 claims across 8 drugs.
Dr. Barbish's Part D claims by kind of drug, 2024
- Generic471 claims86%
- Brand-name75 claims14%
Dr. Barbish'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. Barbish's Part D claims, 2024
- Antibiotics4%23 of 546 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: 4382024: 4243%
Drugs named by CMS: 8 in 2024, 8 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. Allan Walter Barbish scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Barbish for performance year 2024, reported as part of a group. Dr. Barbish accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 77 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Barbish, more than 71% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Barbish's MIPS scores, performance year 2024
- 86of 100Final score
- 75.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 79of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Barbish ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 71st percentile77 procedures
- Colonoscopy
- 71st percentile71 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. Allan Walter Barbish received $213 in industry payments from 2021 to 2024
CMS Open Payments shows 10 general payments to Dr. Barbish from 4 drug and device companies from 2021 to 2024. Food and beverage make up the largest share, 81% of the total. Takeda Pharmaceuticals U.S.A., Inc. paid the most, $129.
General payments to Dr. Barbish by program year, 2021 to 2024
General payments to Dr. Barbish by kind, 2021 to 2024
- Food and beverage$17181%
- Education$4119%
Companies that paid Dr. Barbish the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Allan Walter Barbish graduated from Wayne State University School of Medicine
Dr. Barbish graduated from Wayne State University School of Medicine in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Allan Walter Barbish'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)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 |
| 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. Allan Walter Barbish
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. Allan Walter Barbish's NPI number?
Dr. Allan Walter Barbish's NPI number is 1891743191. It was assigned on May 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Allan Walter Barbish?
Dr. Allan Walter Barbish is a gastroenterologist in Portage, Michigan. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Allan Walter Barbish practice?
Dr. Barbish practices at 3300 Cooley Court, Portage, MI 49024. Dr. Barbish's primary practice is Kalamazoo Endo Center in Portage, Michigan. Dmand AI also links Dr. Barbish to 3 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Allan Walter Barbish's office phone number?
The practice phone on file for Dr. Barbish is (269) 321-3390.
What is Dr. Allan Walter Barbish's medical license number?
Dr. Barbish holds Michigan license 4301406927, one of the licenses on file in 2 states.
Which states has Dr. Allan Walter Barbish been licensed in?
Dmand AI has state licenses on file for Dr. Barbish in Michigan and Indiana.
Which hospitals is Dr. Allan Walter Barbish affiliated with?
Dr. Barbish is affiliated with Bronson Methodist Hospital. Dmand AI links Dr. Barbish to 3 more hospitals.
What medical group is Dr. Allan Walter Barbish part of?
Dr. Barbish is linked to Bronson Medical Group. Dmand AI links Dr. Barbish to 1 more medical group.
Does Dr. Allan Walter Barbish accept Medicare?
Yes. CMS data shows Dr. Barbish billed Medicare for 291 services in 2024, and Dr. Barbish accepts Medicare assignment.
What is Dr. Allan Walter Barbish's MIPS score?
Dr. Barbish's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Allan Walter Barbish see?
CMS counts 268 Medicare patients who saw Dr. Barbish in 2024, with an average age of 71.
What services does Dr. Allan Walter Barbish bill to Medicare?
In 2024, Dr. Barbish's most billed Medicare services were surgery: digestive system (45380), surgery: digestive system (43239) and surgery: digestive system (45385).
Where did Dr. Allan Walter Barbish go to medical school?
Dr. Barbish graduated from Wayne State University School of Medicine in 1986.
What drugs does Dr. Allan Walter Barbish prescribe most?
In 2024 Medicare Part D data, Dr. Barbish's most prescribed drugs by claims were Pantoprazole Sodium, Gavilyte-G and Omeprazole.
Has Dr. Allan Walter Barbish received payments from drug or device companies?
CMS Open Payments shows $213 in general payments to Dr. Barbish from 4 companies from 2021 to 2024. The largest total came from Takeda Pharmaceuticals U.S.A., Inc.
How long has Dr. Allan Walter Barbish been practicing?
Dr. Barbish graduated from medical school in 1986, 40 years ago.
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