Dr. Andrew Robert Johannes, DO
- Medicare services, 2024
- 1,703
- Medicare patients, 2024
- 286
- Part D claims, 2024
- 642
- MIPS score, 2024
- 91
- Hospital affiliations
- 5
- Practice address
- 411 Westwood Dr, Wausau, WI 54401
- Practice phone
- Call (715) 847-0443
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
GastroIntestinal Associates Endoscopy Center
Surgery Center - Medicare-Certified · Wausau, Wisconsin
Find Dr. Johannes' professional email, personal email and mobile number
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Dr. Andrew Robert Johannes is a gastroenterologist in Wausau, Wisconsin
Dr. Johannes practices at GastroIntestinal Associates Endoscopy Center in Wausau, Wisconsin.
Dr. Johannes' NPI, 1821437229, was assigned on June 19, 2013. Dr. Johannes holds Wisconsin license 66968.
- NPI
- 1821437229NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820232812
- NPI enumeration date
- June 19, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (715) 847-0443
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Andrew Robert Johannes practices at GastroIntestinal Associates Endoscopy Center in Wausau, Wisconsin
Dr. Johannes' primary practice is GastroIntestinal Associates Endoscopy Center, at 411 Westwood Dr, Wausau, WI 54401. The practice phone is (715) 847-0443.
- GastroIntestinal Associates Endoscopy Center411 Westwood Dr, Wausau, WI 54401Phone(715) 847-0443
Source: Dmand AI Affiliation Data
Dr. Andrew Robert Johannes is affiliated with 6 sites of care and 2 medical groups
Dr. Johannes' primary practice is GastroIntestinal Associates Endoscopy Center in Wausau, Wisconsin. Dr. Johannes is also affiliated with Aspirus Wausau Hospital. The medical group on file is GI Associates. Dmand AI also links Dr. Johannes to 4 more hospitals 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. Andrew Robert Johannes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johannes practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| GastroIntestinal Associates Endoscopy Center | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrew Robert Johannes is one of 277 gastroenterologists in Wisconsin
Gastroenterology is Dr. Johannes' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Johannes is licensed in Wisconsin.
Specialties and state licenses
- Gastroenterology, WisconsinPrimary
Gastroenterologists near Dr. Johannes
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. Andrew Robert Johannes billed Medicare for 1,703 services in 2024
CMS data shows 1,703 Medicare services from Dr. Johannes across 15 procedure codes in 2024, for 286 Medicare patients. Medicare paid $76,209 for them.
Dr. Johannes' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 02024: 1,220
- Surgery
- 2023: 2532024: 28814%
- Office and hospital visits
- 2023: 1062024: 12316%
- Tests and treatments
- 2023: 332024: 72118%
Where Dr. Johannes' Medicare services took place, 2024
- In an office1,41583%
- In a facility28817%
Dr. Johannes compared with the Wisconsin median for gastroenterologists, 2024
- Dr. Johannes
- Wisconsin median
- Medicare services
- 1,703vs 3295.2 times
- Medicare patients
- 286vs 25811% above
- Part D claims
- 457vs 4297% above
Medians across 278 gastroenterologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Johannes' 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. Johannes?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johannes and other gastroenterologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Andrew Robert Johannes treated 286 Medicare patients in 2024, average age 71
CMS counts 286 Medicare patients who saw Dr. Johannes in 2024. The largest group is 65 to 74, with 147 patients. 74% of them have high cholesterol, and 69% have high blood pressure. 18% are also on Medicaid. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johannes' median patient age at 64, with 50% women.
Dr. Johannes' Medicare patients by age, 2024
Dr. Johannes' Medicare patients by sex, 2024
- Women15655%
- Men13045%
Chronic conditions among Dr. Johannes' Medicare patients, 2024
- High cholesterol74%
- High blood pressure69%
- Arthritis39%
- Diabetes30%
- Chronic kidney disease29%
- Ischemic heart disease29%
- Anxiety28%
- Mood disorders25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johannes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Andrew Robert Johannes wrote 642 Medicare Part D claims in 2024
In 2024, Dr. Johannes wrote 642 Medicare Part D claims for 197 patients. 81% of them were for generic drugs. CMS names the drug for 457 of them, across 11 drugs with 11 or more claims each, at $123,405 in total drug cost. In 2023, CMS named 395 claims across 13 drugs.
Dr. Johannes' Part D claims by kind of drug, 2024
- Generic517 claims81%
- Brand-name125 claims19%
Dr. Johannes' 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. Johannes' Part D claims, 2024
- Antibiotics3%17 of 642 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: 3952024: 45716%
Drugs named by CMS: 11 in 2024, 13 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. Andrew Robert Johannes scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Johannes for performance year 2024, reported as part of a group. Dr. Johannes accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 236 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Johannes, more than 92% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Johannes' MIPS scores, performance year 2024
- 91of 100Final score
- 86.9of 100Quality
- 100of 100Promoting Interoperability
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Johannes ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 92nd percentile236 procedures
- Colonoscopy
- 72nd percentile72 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. Andrew Robert Johannes received $473 in industry payments from 2018 to 2024
CMS Open Payments shows 8 general payments to Dr. Johannes from 5 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 92% of the total. Abbvie Inc. paid the most, $324.
General payments to Dr. Johannes by program year, 2018 to 2024
General payments to Dr. Johannes by kind, 2018 to 2024
- Food and beverage$43592%
- Education$388%
Companies that paid Dr. Johannes the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Andrew Robert Johannes'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) |
| 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. Andrew Robert Johannes
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. Andrew Robert Johannes' NPI number?
Dr. Andrew Robert Johannes' NPI number is 1821437229. It was assigned on June 19, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew Robert Johannes?
Dr. Andrew Robert Johannes is a gastroenterologist in Wausau, Wisconsin. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Andrew Robert Johannes practice?
Dr. Johannes practices at 411 Westwood Dr, Wausau, WI 54401. Dr. Johannes' primary practice is GastroIntestinal Associates Endoscopy Center in Wausau, Wisconsin. Dmand AI also links Dr. Johannes to 4 hospitals and 1 medical group.
What is Dr. Andrew Robert Johannes' office phone number?
The practice phone on file for Dr. Johannes is (715) 847-0443.
What is Dr. Andrew Robert Johannes' medical license number?
Dr. Johannes holds Wisconsin license 66968.
Which hospitals is Dr. Andrew Robert Johannes affiliated with?
Dr. Johannes is affiliated with Aspirus Wausau Hospital. Dmand AI links Dr. Johannes to 4 more hospitals.
What medical group is Dr. Andrew Robert Johannes part of?
Dr. Johannes is linked to GI Associates. Dmand AI links Dr. Johannes to 1 more medical group.
Does Dr. Andrew Robert Johannes accept Medicare?
Yes. CMS data shows Dr. Johannes billed Medicare for 1,703 services in 2024, and Dr. Johannes accepts Medicare assignment.
What is Dr. Andrew Robert Johannes' MIPS score?
Dr. Johannes' MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. Andrew Robert Johannes see?
CMS counts 286 Medicare patients who saw Dr. Johannes in 2024, with an average age of 71.
Show 4 more questionsShow fewer questions
What services does Dr. Andrew Robert Johannes bill to Medicare?
In 2024, Dr. Johannes' most billed Medicare services were injected or infused drug (J1745), surgery: digestive system (43239) and office visit, new patient (99204).
What drugs does Dr. Andrew Robert Johannes prescribe most?
In 2024 Medicare Part D data, Dr. Johannes' most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Linzess.
Has Dr. Andrew Robert Johannes received payments from drug or device companies?
CMS Open Payments shows $473 in general payments to Dr. Johannes from 5 companies from 2018 to 2024. The largest total came from Abbvie Inc.
How long has Dr. Andrew Robert Johannes been practicing?
Dr. Johannes graduated from medical school in 2013, 13 years ago.
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