Dr. Guy Chadwick Asher Jr., MD
- Medicare services, 2024
- 1,711
- Medicare patients, 2024
- 487
- Part D claims, 2024
- 2,240
- Hospital affiliations
- 3
- Industry payments
- $3,650
- Practice address
- 7836 W Jefferson Blvd, Fort Wayne, IN 46804
- Practice phone
- Call (260) 494-3484
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nephrology Associates of Northern Indiana, Inc
Fort Wayne, Indiana
Find Dr. Asher'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. Guy Chadwick Asher Jr. is a nephrologist in Fort Wayne, Indiana
Dr. Asher practices at Nephrology Associates of Northern Indiana, Inc in Fort Wayne, Indiana.
Dr. Asher's NPI, 1396731212, was assigned on September 26, 2005. Dr. Asher graduated from Indiana University School Of Medicine in 1997. Dr. Asher's Indiana license number on file is 01064470A.
- NPI
- 1396731212NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759469927
- NPI enumeration date
- September 26, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (260) 494-3484
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Guy Chadwick Asher Jr. practices at Nephrology Associates of Northern Indiana, Inc in Fort Wayne, Indiana
Dr. Asher's primary practice is Nephrology Associates of Northern Indiana, Inc, at 7836 W Jefferson Blvd, Fort Wayne, IN 46804 in Allen County. The practice phone is (260) 494-3484.
- Nephrology Associates of Northern Indiana, Inc7836 W Jefferson Blvd, Fort Wayne, IN 46804 · Allen CountyPhone(260) 494-3484
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Guy Chadwick Asher Jr. is affiliated with 5 sites of care and 1 medical group
Dr. Asher's primary practice is Nephrology Associates of Northern Indiana, Inc in Fort Wayne, Indiana. Dr. Asher is also affiliated with Parkview Regional Medical Center. The medical group on file is NANI - Nephrology Associates of Northern Illinois & Indiana. Dmand AI also links Dr. Asher to 2 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Guy Chadwick Asher Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Asher practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nephrology Associates of Northern Indiana, Inc | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Guy Chadwick Asher Jr. is one of 197 nephrologists in Indiana
Nephrology is Dr. Asher's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Asher is board certified in nephrology by the American Board of Internal Medicine. Dmand AI has Dr. Asher's licenses on file in 3 states: Indiana, California and Ohio.
Specialties and state licenses
- Nephrology, IndianaPrimary
- California license
- Ohio license
Clinical focus
Dmand AI lists acute kidney failure, chronic anemia, chronic kidney disease and fluid and electrolyte imbalances among the conditions Dr. Asher treats.
Nephrologists near Dr. Asher
Counts of nephrologists 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. Guy Chadwick Asher Jr. billed Medicare for 1,711 services in 2024
CMS data shows 1,711 Medicare services from Dr. Asher across 18 procedure codes in 2024, for 487 Medicare patients. Medicare paid $144,737 for them.
Dr. Asher's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,6582024: 1,01039%
- Tests and treatments
- 2023: 3762024: 48228%
- Other services
- 2023: 02024: 114
- Lab and pathology
- 2023: 2272024: 10554%
Where Dr. Asher's Medicare services took place, 2024
- In an office1,12566%
- In a facility58634%
Dr. Asher compared with the Indiana median for nephrologists, 2024
- Dr. Asher
- Indiana median
- Medicare services
- 1,711vs 91986% above
- Medicare patients
- 487vs 34242% above
- Part D claims
- 1,957vs 8232.4 times
Medians across 204 nephrologists in Indiana with Dmand AI profiles that report each measure.
Dr. Asher'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. Asher?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Asher and other nephrologists in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Guy Chadwick Asher Jr. treated 487 Medicare patients in 2024, average age 72
CMS counts 487 Medicare patients who saw Dr. Asher in 2024. The largest group is 65 to 74, with 166 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 26% are also on Medicaid. Their average risk score is 4.53, 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. Asher's median patient age at 74, with 48% women.
Dr. Asher's Medicare patients by age, 2024
Dr. Asher's Medicare patients by sex, 2024
- Women22646%
- Men26154%
Chronic conditions among Dr. Asher's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes60%
- Arthritis53%
- Ischemic heart disease51%
- Heart failure46%
- Anxiety36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Asher's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Guy Chadwick Asher Jr. wrote 2,240 Medicare Part D claims in 2024
In 2024, Dr. Asher wrote 2,240 Medicare Part D claims for 340 patients. 86% of them were for generic drugs. CMS names the drug for 1,957 of them, across 46 drugs with 11 or more claims each, at $428,609 in total drug cost. In 2023, CMS named 2,092 claims across 44 drugs.
Dr. Asher's Part D claims by kind of drug, 2024
- Generic1,921 claims86%
- Brand-name319 claims14%
Dr. Asher'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. Asher's Part D claims, 2024
- Antibiotics2%34 of 2,240 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: 2,0922024: 1,9576%
Drugs named by CMS: 46 in 2024, 44 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
How Dr. Guy Chadwick Asher Jr. takes part in Medicare
Dr. Asher accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Guy Chadwick Asher Jr. received $3,650 in industry payments from 2016 to 2025
CMS Open Payments shows 232 general payments to Dr. Asher from 25 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $592.
General payments to Dr. Asher by program year, 2016 to 2025
General payments to Dr. Asher by kind, 2016 to 2025
- Food and beverage$3,59999%
- Education$511%
Companies that paid Dr. Asher the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Guy Chadwick Asher Jr. has 1 award and honors on record
Dmand AI lists 1 award for Dr. Asher, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Asher
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Guy Chadwick Asher Jr. graduated from Indiana University School Of Medicine
Dr. Asher graduated from Indiana University School Of Medicine in 1997.
- Medical school
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Guy Chadwick Asher Jr. accepts plans from 16 insurance carriers
Dr. Asher is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- CareSource
- +8 more carriersWith a free account
Plan types Dr. Asher accepts, by number of carriers
- Medicare9
- PPO9
- HMO8
- POS5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Guy Chadwick Asher Jr.'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Guy Chadwick Asher Jr.
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. Guy Chadwick Asher Jr.'s NPI number?
Dr. Guy Chadwick Asher Jr.'s NPI number is 1396731212. It was assigned on September 26, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Guy Chadwick Asher Jr.?
Dr. Guy Chadwick Asher Jr. is a nephrologist in Fort Wayne, Indiana. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Guy Chadwick Asher Jr. practice?
Dr. Asher practices at 7836 W Jefferson Blvd, Fort Wayne, IN 46804. Dr. Asher's primary practice is Nephrology Associates of Northern Indiana, Inc in Fort Wayne, Indiana. Dmand AI also links Dr. Asher to 2 hospitals and 1 group practice or clinic.
What is Dr. Guy Chadwick Asher Jr.'s office phone number?
The practice phone on file for Dr. Asher is (260) 494-3484.
What is Dr. Guy Chadwick Asher Jr.'s medical license number?
Dr. Asher's Indiana license number on file is 01064470A, one of the licenses on file in 3 states.
Which states has Dr. Guy Chadwick Asher Jr. been licensed in?
Dmand AI has state licenses on file for Dr. Asher in Indiana (2007 to 2025), California (since 2001) and Ohio (1999 to 2027).
Which hospitals is Dr. Guy Chadwick Asher Jr. affiliated with?
Dr. Asher is affiliated with Parkview Regional Medical Center. Dmand AI links Dr. Asher to 2 more hospitals.
What medical group is Dr. Guy Chadwick Asher Jr. part of?
Dr. Asher is linked to NANI - Nephrology Associates of Northern Illinois & Indiana.
Does Dr. Guy Chadwick Asher Jr. accept Medicare?
Yes. CMS data shows Dr. Asher billed Medicare for 1,711 services in 2024, and Dr. Asher accepts Medicare assignment.
How many Medicare patients does Dr. Guy Chadwick Asher Jr. see?
CMS counts 487 Medicare patients who saw Dr. Asher in 2024, with an average age of 72.
Show 7 more questionsShow fewer questions
Is Dr. Guy Chadwick Asher Jr. board certified?
Yes. Dr. Asher is board certified in nephrology by the American Board of Internal Medicine.
What services does Dr. Guy Chadwick Asher Jr. bill to Medicare?
In 2024, Dr. Asher's most billed Medicare services were care management and other visits (99490), hospital inpatient care (99232) and dialysis (90960).
Where did Dr. Guy Chadwick Asher Jr. go to medical school?
Dr. Asher graduated from Indiana University School Of Medicine in 1997.
What drugs does Dr. Guy Chadwick Asher Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Asher's most prescribed drugs by claims were Amlodipine Besylate, Hydralazine HCl and Carvedilol.
Has Dr. Guy Chadwick Asher Jr. received payments from drug or device companies?
CMS Open Payments shows $3,650 in general payments to Dr. Asher from 25 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Guy Chadwick Asher Jr. been practicing?
Dr. Asher graduated from medical school in 1997, 29 years ago.
What insurance does Dr. Guy Chadwick Asher Jr. accept?
Dr. Asher is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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